Which properties are examples of chemical properties? Check all that apply.

reactivity
color
hardness
boiling point
combustibility
shape

Answers

Answer 1

Answer:

1.Reactivity

2.combustibility

3.Shape

Hope this helps,

If you think I am right please give brainliest

Happy Holidays!

Explanation:

Answer 2
Reactivity, combustibility, shape.

Related Questions

Genetically engineered crops (3 points)
A. are often unsuccessful
B. create optimum soil
C. increase crop yields
D. prevent weed growth

Answers

Answer:

C. increase crop yields

Explanation:

Genetically modified organisms are those organisms that have been improved using genetic engineering procedures. Genetic engineering/modification is the manipulation of an organism's genome in order to get an improved organism with desirable traits.

The organisms being genetically modified or engineered is called GMO or transgenic organisms. Hence, in this case, one feature of the crops being genetically modified is to have an INCREASED YIELD.

1. Which groups of the periodic table constitute p-block?​

Answers

groups 13 through 18 are the constitute p-block

Which sphere forms Earth's outermost layer?

Atmosphere
Biosphere
Cryosphere
Hydrosphere

Answers

Answer: I believe the answer is A.

Explanation: Well, the lithosphere is rocks and earth, the hydrosphere makes up all the water on Earth, the biosphere is us, (living things,) and the atmosphere is the air that surrounds us and our planet. So if you go in order, it's basically lithosphere, hydrosphere, biosphere, and then atmosphere.

Answer:

Atmosphere

Explanation:

I took test

If an element has 3 valence electrons, what charge will likely form on its ion

Answers

Most likely it will give up its 3 electrons therefore it will have a positive 3 charge

The element will lose electrons to become stable if the valence shell contains 3 or fewer electrons. The production of cations is a sign of electron loss. The species having positive charge are called cations. As a result, the ion will get a positive charge.

What is ion ?

An atom or molecule with a net electrical charge is known as an ion. Conventionally, the charge of an electron is thought to be negative; this charge is equal to and opposite to the charge of a proton, which is thought to be positive.

An atom will shed its valence electrons in order to become a charged ion and create an ionic bond with another atom if it lacks one to three of them.

A positive ion is created by taking electrons from a neutral atom, whereas a negative ion is created by adding electrons to a neutral atom. The quantity of protons remains constant during the formation of an ion.

Thus, the ion will get a positive charge.

To learn more an ion, follow the link;

https://brainly.com/question/14982375

#SPJ2

The following half-reaction method is used to balance oxidation-reduction equations.

(1) Determine which atoms change oxidation state from reactant to product in the reaction.
(2) Identify and write half reactions (oxidation and reduction).
(3) Return to the original chemical equation to balance it.
(a) Insert the coefficients from the half reactions first.
(b) Inspect the number of each atom on each side for all elements.

Which important step is missing from this procedure?

Check other reactions similar to this one.
Name the elements that are involved in the reaction.
Make sure the reduction half reaction is identified first.
Balance the half reactions based on the number of electrons.

Answers

Answer:

its (D) Balance the half reactions based on the number of electrons.

Explanation:

Answer:

D ✔️

Explanation:

"Balance the half reactions based on the number of electrons."

If you have 23.8g of CaCl2, how many formula units is it?

Answers

Answer:

1.3×10²³ formula unit

Explanation:

Given data:

Mass of CaCl₂ = 23.8 g

Number of formula unit = ?

Solution:

Number of moles = mass/molar mass

Number of moles = 23.8 g/110.98 g/mol

Number of moles = 0.21 mol

1 mole of any substance contain 6.022×10²³ formula unit

0.21 mol × 6.022×10²³ formula unit / 1mol

1.3×10²³ formula unit

What is the chemical name of C4H10

Answers

Answer:

Butane

Explanation:

Answer:

Butane

Explanation:

Butane is a colorless gas with a faint petroleum-like odor.

Melting point: -138 °C

Which of the following determines the identity of an element?

Answers

There’s nothing there? For me to answer your question

A4 g sugar cube (Sucrose : C 12 H 22 O 11 ) is dissolved in a 350 ml teacup of 80 C water. What is the percent composition by mass of the sugar solution ? Density of water at 80 degrees * C = 0.975g / m * l Select one :- 1.96\% . 1.63% 1.36 % d% e 1.16 \%​

Answers

Answer:

%Sgr = 1% (1 sig.fig.)

Explanation:

mass water = 350ml x 0.975g/ml = 341.25g

mass sugar added = 4g

solution mass = 341.25g + 4g = 345.25g

%sugar = (4g/345.25g)·100% = 1.1586% ≅ 1% (1 sig.fig)

The percent composition by the mass of the sugar solution is:

e. 1.16 %

This can be calculated by using mass of sugar.

Calculation of percent composition:

Mass of water = 350ml x 0.975g/ml = 341.25g

Mass of sugar added = 4g

Total solution's mass = 341.25g + 4g = 345.25g

%sugar = (4g/345.25g)·100%

%sugar= 1.1586% ≅ 1.16 %

Thus, the percent composition of sugar is 1.16%. Hence, option E is correct.

Find more information about percent composition here:

brainly.com/question/17021926

Fill in the coefficients that will balance the following reaction: (Note: Use 1 as coefficient where appropriate.) NaCl + CaS → Na2S + CaCl2

Answers

Answer:

the answer is

2,1,1,1

Explanation:

A student predicted the reaction between hydrogen and oxygen gas would yield 125 of water. However, after measuring the water formed in the reaction, student determined that only 110 of water was actually formed. What is the percent yield of this reaction ?
Help

Answers

Percentage yield= (actual/theoretical)x100

So in this case the actual yield is 110 and the theoretical yield is 125.

So you would do =(110/125)x100
So the answer would be =88%

write the general formula of a. alkane b. aikyl radicals radicals

Answers

Answer:

General formula of alkanes is: [tex]C_{n}H_{2n+2}[/tex]

General formula of alkyl: [tex]C_{n}H_{2n+1}[/tex]

A red laser pointer emits light at a wavelength of 488 nm. If the laser emits 7.5  10–4 J of energy per second in the form of visible radiation, how many photons per second are emitted from the laser?
a)
4.1  10–19 photons/sec
b)
5.4  10–16 photons/sec
c)
8.9  1014 photons/sec
d)
1.8  1015 photons/sec
e)
2.5  1018 photons/sec

Answers

The answer to the question, how many photons per second are emitted from the laser is d. 1.84 × 10¹⁵ photons/sec

Since the red laser pointer emits light of wavelength 488 nm, we need to find the energy of each photon from

E = hc/λ where h = Planck's constant = 6.63 × 10⁻³⁴ Js, c = speed of light = 3 × 10⁸ m/s and λ = wavelength of light = 488 nm = 488 × 10⁻⁹ m

Substituting the values of the variables into the equation, we have

E = hc/λ

E = 6.63 × 10⁻³⁴ Js × 3 × 10⁸ m/s ÷ 488 × 10⁻⁹ m

E = 19.89 × 10⁻²⁶ Jm ÷ 488 × 10⁻⁹ m

E = 0.04076 × 10⁻¹⁷ J per photon

E = 4.076 × 10⁻¹⁹ J per photon

Since the laser emits 7.5 × 10⁻⁴ J per second, the number of photons emitted from the laser per second = energy per second/energy per photon

= 7.5 × 10⁻⁴ J per second ÷ 4.076 × 10⁻¹⁹ J per photon

= 1.84 × 10¹⁵ photons/sec

The answer to the question, how many photons per second are emitted from the laser is d. 1.84 × 10¹⁵ photons/sec

Learn more about number of photons per second emitted here:

https://brainly.com/question/13092011

what is the meaning of the word hydrocarbons

Answers

Answer:

An organic compound (such as acetylene or butane) containing only carbon and hydrogen and often occurring in petroleum, natural gas, coal, and bitumens.

Explanation:

Iooked it up

molecular formula of alkyne containing 10 carbon atom​

Answers

Answer:

Decyne: C10H18

Hope it helps! please mark me brainliest..

Merry Christmas good day

The general formula for alkynes is CnH2n-2

the number of carbon atoms is 10 so the number of hydrogen atoms will be 10*2-2=20-2=18hydrogen atoms

the molecular formula for this alkyne is :

C₁₀H₁₈ which is called decyne

can someone please help me with this....?

Answers

Answer:

Explanation:

The answer is D

A group of organs working together to perfrom a certain function called

Answers

Answer:

group. hfdzybidddiklllnjjooolll

Answer:

An organ system

Explanation:

:>

One method used commercially to peel potatoes is to soak them in a solution of NaOH for a short time and then remove them from the NaOH. The peel will have separated from the potato and so it can then easily be sprayed off to yield beautifully peeled potatoes! The NaOH solution however, must be analyzed periodically to make sure its concentration is adequate for the reaction In one such analysis, 45.7 mL of 0.500 M H2SO4 is required to react completely with a 20.0 mL sample of the NaOH solution. The products of the reaction are Na2SO4 and water. What is the concentration of the starting NaOH solution?a. 1.14 M b. 2.28 M c. 0.438 M d. 0.500 M e. 0.571M

Answers

Answer:

b. 2.28 M

Explanation:

The reaction of neutralization of NaOH with H2SO4 is:

2NaOH + H2SO4 → Na2SO4 + 2H2O

Where 2 moles of NaOH react per mole of H2SO4

To solve the concentration of NaOH we need to find the moles of H2SO4. Using the chemical equation we can find the moles of NaOH that react and with the volume the molar concentration as follows:

Moles H2SO4:

45.7mL = 0.0457L * (0.500mol/L) = 0.02285 moles H2SO4

Moles NaOH:

0.02285 moles H2SO4 * (2moles NaOH / 1 mol H2SO4) = 0.0457moles NaOH

Molarity NaOH:

0.0457moles NaOH / 0.020L =

2.28M

Right option:

b. 2.28 M

The concentration of the starting NaOH solution is:

b. 2.28 M

Neutralization reaction:

The reaction of neutralization of NaOH with H₂SO₄ is:

2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂O

Calculation for concentration of NaOH:

We need to find the moles of H₂SO₄. Using the chemical equation we can find the moles of NaOH.

Moles of H₂SO₄:

45.7mL = 0.0457L * (0.500mol/L) = 0.02285 moles of H₂SO₄

Moles of NaOH:

0.02285 moles H₂SO₄ * (2moles NaOH / 1 mol H₂SO₄) = 0.0457moles NaOH

Molarity of NaOH:

0.0457moles NaOH / 0.020L =2.28M

Thus, the concentration of the starting NaOH solution is: 2.28 M.

Find more information about Molarity here:

brainly.com/question/17138838

PLEASE HELP WILL GIVE BRAINLEIST ASAP Determine the fraction of an original sample of K-42 that remains unchanged after 24.72 hours.

Answers

Answer:

25% or 0.25 or 1/4

Explanation:

don't know which form you need so here you have all 3

good luck :)

Please please please help please

Answers

Hydrogen and oxygen! Happy holidays btw

A sample of Neon and Helium gases at 298 K have a total pressure of 29 atm. If the partial pressure of He is 6 atm, what is the mole fraction of neon?

Answers

I just met a cowboy guy and

What volume, in mL, of concentrated 16 M nitric acid would you need to use in order to prepare 500.0 mL of a 0.250 M HNO3(aq) solution?

Answers

Given :

Initial concentration of nitric acid, [tex]C_1 = 16\ M[/tex].

Final concentration of nitric acid, [tex]C_2 = 0.250 \ M[/tex].

Volume of [tex]HNO_3[/tex], [tex]V _2= 500\ mL = 0.5\ L .[/tex]

To Find :

Volume needed( [tex]V_1[/tex] ).

Solution :

We know,

[tex]C_1V_1 =C_2V_2\\\\16 \times V_1 = 0.250 \times 0.5 \\\\V_1 = \dfrac{0.250 \times 0.5}{16}\\\\V_1 = 0.0078125\ L = 7.8125 \ mL[/tex]

Hence, this is the required solution.

3
Solve and derive the unit for Power​

Answers

Answer:

Unit of power is watt

Explanation:

Power = rate of doing work

or

Power, P = W/t

Where

W is work done and t is time

The unit of work done is Joules and that of time is seconds.

Power, P = J/s

We know that, J/s = watts

Hence, the unit of power is watts.

Please help I need this done

Answers

Answer:

they arent alcohols.

Explanation:

They aren’t alcohols

How does electroplating happen?
A. A thin layer of metal is removed from a cathode.
B. Metal ions form a solid layer on a metal cathode.
C. Metal on a cathode forms ions in solution.
D. Metal ions in solution form a precipitate.

(Answer is B.)

Answers

Answer:

B

Explanation:

An electroplating happen when metal ions form a solid layer on a metal cathode. Therefore, option B is correct.

What is an electroplating ?

The term electroplating is defined as the process of aligning another metal on the metal. Electroplating is usually used to change the physical properties of an object.

An electroplating is accomplished by an electroplating apparatus that contain a brine solution, a battery, wires, and alligator clips that kept carbon rods attached to the metal to be electroplated and the metal to be layered.

This process is used to give objects increased wear resistance, corrosion protection or aesthetic appeal and greater thickness. While electroplating is like advanced technology. It is primarily used to change the physical properties of an object.

Thus, option B is correct.

To learn more about an electroplating, follow the link;

https://brainly.com/question/20112817

#SPJ5

Consider the elements: Na, Mg, Al, Si, P.

a. Which element has the lowest second ionization energy?
b. Which element has the smallest atomic radius?
c. Which element is least metallic?
d. Which element is diamagnetic?

Answers

Answer:

The elements mentioned in the series are Na, Mg, Al, Si, and P. It can be seen that all these elements are located in the same period. The atomic number of the mentioned elements are Na-11, Mg-12, Al-13, Si-14, and P-15.

a) There will be an increase in the ionization energy with the increase in the element's atomic number across a period. More energy is needed to withdraw an electron from a completely occupied shell in comparison to an incompletely occupied shell.

The atomic number of Na is 11. When one electron is withdrawn from Na, it gets converted into the inert gas configuration of Ne. Thus, it will require more energy to withdraw the second electron from Na. Hence, Na exhibits the lowest second ionization energy.

b) Across the period, with an increase in the element's atomic number, the atomic radii reduces from left to right. Thus, P exhibits the smallest atomic radius.

c) The metallic nature of the elements reduces from left to right across a period in the periodic table. Thus, P is the least metallic element.

d) Diamagnetic signifies towards the element that exhibits pair electrons in its sub-shells. The electronic configuration of Mg is,

1s2 2s2 2p6 3s2

In Mg, no unpaired electrons are present, while all the remaining elements mentioned exhibit unpaired electrons in their valence shell. Thus, Mg is the diamagnetic element.

Describe how you would prepare 5.00 × 102 mL of a 1.75 M H2SO4 solution, starting with an 8.61 M stock solution of H2SO4

Answers

We prepare the volume of the 8.61 M stock solution of 0.102 L, then we dilute it by adding water to 0.5 L

Further explanation

Given

5.00 × 10² mL of a 1.75 M H₂SO₄ solution

8.61 M stock solution

Required

The volume of stock solution

Solution

Molarity from 8.61 M to 1.75 M ⇒Dilution

We can use dilution formula :

[tex]\tt \boxed{\bold{M_1.V_1=M_2.V_2}}[/tex]

M₁=8.61 M

V₂=500 ml = 0.5 L

M₂=1.75 M

[tex]\tt V_1=\dfrac{M_2.V_2}{M_1}\\\\V_1=\dfrac{1.75\times 0.5}{8.61}\\\\V_1=0.102~L[/tex]

Naming Ionic Compounds.

What is the neutral Ionic Compound name of Be^+2 & S^-2?

What is the neutral Ionic Compound name of Pb^+2 & CO3^-2?

Answers

Answer:For binary ionic compounds (ionic compounds that contain only two types of elements), the compounds are named by writing the name of the cation first followed by the name of the anion. For example, KCl, an ionic compound that contains K+ and Cl- ions, is named potassium chloride.

Explanation:

One sugar produced by photosynthesis is called

Answers

glucose is produced using sunlight or the process photosynthesis

mark me brainliest

Which trait can a plant acquire during its lifetime?
O A. A damaged stem
OB. A blue flower color
O C. A long, narrow leaf shape
O D. A smooth seed texture

Answers

Answer:

OB

Explanation:

wat does aquire mean

Answer:

a

Explanation:

a damaged stem

Other Questions
In your own words, what is a "compromise"? Think of a time when you had to make a "compromise" with someone in order to resolve a dispute. Please explain how the dispute was resolved (what was the compromise)? 4 cookies and 6 friends how much does each one get Why is nature important in tribal myths? *BRAINIEST & 20 POINTS*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! En una tienda venden pepitas de chocolate y nueces. 2 libras de pepitas de chocolate y libras de nueces cuestan $20 en total. 8 libras de pepitas de chocolate y 3 libras de nueces cuestan $29 en total. Hallar cunto cuesta cada libra de pepitas de chocolate y cada libra de nueces. Skylar owns a food truck that sells tacos and burritos. She sells each taco for $3 and each burrito for $6. Yesterday Skylar made a total of $600 in revenue from selling a total of 120 tacos and burritos. Graphically solve a system of equations in order to determine the number of tacos sold, x,x, and the number of burritos sold, yy. in the product 6O2, what does the coefficient mean?there are 12 molecules of O2,there are 8 molecules of O2,there are 6 molecules of O2,there are 2 molecules of O2, What do asteroids have in common with earth? What are the steps to find the slope and y-intercept of the equation 16x - 4y = -32? at a baseball game 70% of the people in the crowd purchase popcorn. There were 250 people in the crowd. How many people purchased popcorn? What is the role of an R group in an amino acid?A.) It represents the core group that is common to all amino acids.B.) It gives all amino acids the same physical and chemical properties.C.) It is the functional group that distinguishes one amino acid from another.D.) It is the site where other amino acids bond to form polypeptide chains. At Maple High, the cost to attend special events depends on whether a student has purchased a $10 discount card. Option A: The student buys a discount card. The cost is $5 per event. Option B: The student does not buy a discount card. The cost is $7.50 per event. PLEASE HELP MEA man fires a bullet from a gun. The bullet flies with a velocity of 200m/s. how long willthe bullet to hit with a target of 800m away? Marley got 18 questions right on her lastest math test. When she checked her score in Aspen she saw that was 90%. How many questions were on the test? i will give brainliest Evans family drove to a theme park for vacation.They drove the same speed throughout the trip.The first day, they drove 300 miles in 6 hours.The second day, they drove 250 miles in 5 hours.The third day, they arrived at the park after driving for 3 hours.How many miles did they drive on the third day? Find the rate of change. Complete the text with the past simple form of the verbs in the box. Leave forget meet get say find know buy think see Last weekend was my friend Rod's birthday but unfortunately me and my other friends 1 ___________ about it and Rod 2 ____________ really angry. Luckily, one of my friends 3 ___________ someone who worked in a local disco and we 4 ___________ this person on Monday evening to organise a surprise party. He 5 ___________ the disco was busy all week except for Thursday so we booked it for then. We 6 ___________ a good DJ and 7 ___________ lots of food and drink from the supermarket. On Thursday our friend 8 ___________ it was just an ordinary meeting of our group and was shocked when he 9 ___________ his name outside the disco. We danced all night long and the last person 10 ___________ at 2 am. Identify some things outside your house that you need to tether before a storm. Which statement describes a major reason that America entered World War Ion the Allied side?