Answer:
It starts to move because of Newtons first law "An object will not change it's motion unless a force acts on it"
Explanation:
Meaning ball B is that force acting upon ball A
In the Lewis structure for FeF3, how many lone pairs surround the iron atom?
NEED ASAP
Select one:
a. 0
b. 1
c. 2
d. 3
Clear my choice
Answer:
b. 1
Explanation:
If we consider it carefully we will notice that the electronic configuration of iron III is; [Ar] 3d5 4s0.
Now, three electrons from the d orbital are paired with the three electrons from three F atoms according to the valence bond theory. This leaves out one pair of electrons localized on the d orbital of iron.
Hence the compound has one lone pair of electrons.
Which answer best describes the meaning of submerged?
The hurricane produced so much rain and flooding that cars were submerged.
drowned
damp
wet
underwater
Answer:
Drowned
Explanation:
We can use drown here, that sounds appropriate.
As the temperature of a gas increases with the volume remaining constant, the pressure of the gas A) decreases B) increases C ) remains the same
Answer:
B) increases
higher temperature = higher pressure
what is the empirical formula of a compound that is found to consist of 56% chorine and no other element except iron
Answer:
FeCl₂
Explanation:
Empirical formula is the simplest formula of a compound.
Mass percentage of Chlorine = 56%
Mass percentage Iron = 100 - 56 = 44%
Elements
Fe Cl
Percentage mass 44 56
moles 44/55.85 56/35.5
0.79 1.56
Divide by the smallest
number 0.79/0.79 1.56/0.79
1 2
The empirical formula of the compound is FeCl₂
? C+? O2 +? CO2,
what is the maximum amount of CO2 which
could be formed from 13.19 g of C and 15.92 g
of O2?
Answer in units of g.
Look at the mole ratio in the balanced equation
2CO + O2 ==> 2CO2
3.44 mol O2 x 2 mol CO/mol O2 = 6.88 moles CO
Cindy is studying how the light absorption of construction paper varies with the color of the paper.
She decides to conduct her experiment in a room that is completely closed to sunlight. She provides a single light source—a florescent light bulb and places it 1.0 meters above each sheet of construction paper for 20.0 minutes.
If Cindy wants to measure the relative absorption of each sheet of construction paper, which of the following tools would be the most useful?
A) A temperature probe
B) A hand lens
C) A light sensor
D) A prism
Answer: I think that is C, a light sensor but im not sure
Explanation:
Answer:
temperature probe
Explanation:
What is the molarity of 2.0 moles of glucose
in 4.0 L of glucose solution?
Answer:
0.5 M
General Formulas and Concepts:
Chemistry - Aqueous Solutions
Molarity = moles of solute / liters of solutionExplanation:
Step 1: Define
2.0 mol glucose
4.0 L glucose solution
Step 2: Find Molarity
Substitute: M = 2.0 mol / 4.0 LDivide: M = 1/2Evaluate: M = 0.5This process transforms_______ energy from the sun into chemical energy in the form of ______ which the plant can use to live and grow.
Answer:
uifhiuwrhuio fw
Explanation:
hfuiwehgu34iht3uht34[pht349348ut0tg
Rank the following in terms of increasing boiling point:_______. CH3CH2OCH2CH3 CH3CH2OCH3 CH3CH2CH2CH3 CH3CH2CH2CH2NH2 a. CH3CH2CH2CH2NH2 < CH3CH2CH2CH3 < CH3CH2OCH3 < CH3CH2OCH2CH3 b. CH3CH2CH2CH3 < CH3CH2OCH2CH3 < CH3CH2OCH3 < CH3CH2CH2CH2NH2 c. CH3CH2OCH3 < CH3CH2CH2CH3 < CH3CH2OCH2CH3 < CH3CH2CH2CH2NH2 d. CH3CH2CH2CH2NH2 < CH3CH2OCH2CH3 < CH3CH2OCH3 < CH3CH2CH2CH3 e. CH3CH2CH2CH3< CH3CH2OCH3< CH3CH2OCH2CH3< CH3CH2CH2CH2NH2
Answer:
CH3CH2CH2CH3 <CH3CH2OCH3<CH3CH2OCH2CH3< CH3CH2CH2CH2NH2
Explanation:
Some important factors affect the boiling point of aliphatic compounds. Prominent among them are;
1) relative molecular mass
2) nature of intermolecular
3) surface area of compound.
In this case, the nature of intermolecular forces and the molecular mass of the compounds are worthy of mention.
The degree of dipole interaction in CH3CH2CH2CH2NH2 is far greater than that in the ethers hence the amine has the highest boiling point followed by the ether of higher molecular mass then the ether of lower molecular mass and finally the alkane has the lowest boiling point because only dispersion forces are involved.
The correct ranking of the given organic compounds from highest to lowest boiling points is given by;
Option D; CH3CH2CH2CH2NH2 < CH3CH2OCH2CH3 < CH3CH2OCH3 < CH3CH2CH2CH3
We are given the organic compounds;
CH3CH2OCH2CH3
CH3CH2OCH3
CH3CH2CH2CH3
CH3CH2CH2CH2NH2
The family names of the given organic compounds are;
CH3CH2OCH2CH3 is an ether
CH3CH2OCH3 is an ether
CH3CH2CH2CH3 is an alkane
CH3CH2CH2CH2NH2 is an amine
The boiling points are given in the order from highest to lowest as;
Alkanes < Ethers < Amines
This is because Amines have higher possibility of hydrogen bonding than the others.
Lastly, a longer chain ether will have a higher boiling point than the shorter chain one because it can have more Vander walls force interactions.
Thus, the correct order of arrangement of the given organic compounds from highest to lowest boiling point is;
CH3CH2CH2CH2NH2 > CH3CH2OCH2CH3 > CH3CH2OCH3 > CH3CH2CH2CH3
Read more about ranking of organic compounds according to boiling points at; https://brainly.com/question/13708633
I want a Huge conversation about planets (kid friendly)
Answer:
Plants are made of gas and mass
Answer:
hello again :-)))))))
For the chemical reaction:
ALOH3 (s)
= Al2O3 (s)
+ H20 (l)
Calculate the mass of water formed when 100 g of Al(OH)3 is heated. (AI = 27: 0 - 16; H = 1)
Answer:
35.1 g
Explanation:
Given data:
Mass of Al(OH)₃ = 100 g
Mass of water formed = ?
Solution:
Chemical equation:
2Al(OH)₃ → Al₂O₃ + 3H₂O
Number of moles of Al(OH)₃:
Number of moles = mass/molar mass
Number of moles = 100 g/ 78 g/mol
Number of moles = 1.3 mol
now we will compare the moles of Al(OH)₃ with water.
Al(OH)₃ : H₂O
2 : 3
1.3 : 3/2×1.3 = 1.95
Mass of water produced:
Mass = number of moles ×molar mass
Mass = 1.95 mol × 18 g/mol
Mass = 35.1 g
Directions: Fill in the 12 steps in the decay of U-235 in the diagram below.
Begin with U-235 and finish with an
isotope of lead. The particles emitted in each step are listed below. Use the periodic table to find information about
mass numbers, atomic numbers, and chemical symbols. Place the correct symbol in the space corresponding to the
correct mass number and atomic number.
Answer:
SUPER MARIOLWEJHRTÑWQEGTPWIQETGQWKÑEJGBKSDLJBGKSJDLGB
Explanation:
please help me i will give brain list
a)CH3-CH2-CH2-CH=CH2
b)CH3-CH2-CH2-CH2-CH2-CH2-CH3
c)CH≡C-CH2-CH2-CH2-CH3
d)CH3-CH2-CH2-CH2-CH2-CH2-CH=CH2
e)CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3
give me brain list
answer two quetions.......
Answer:5.=D
6.=B
Explanation:
balance by oxidation number method<br />KMnO4 + Na2O₂ + H2 so4 ko2so4 +<br />Mosou4 + Na2so<br />4 + O2 + H₂O
Answer:
8H2SO4 + 2KMnO4 + 5Na2O2 => 8H2O + 2MnSO4 + 5Na2SO4 + 5O2 + K2SO4
have:
Explanation:
You have two options for this task.
Option 1: Create your own stage or film interpretation of one scene or chapter from Journey to the Center of the Earth, write it out in script or screenplay format, or you can actually film it and upload it to your instructor. You can conduct an Internet search for sample scripts or screenplays to help you with the basics of formatting.
Remember, you are only doing one section. Pick a chapter and go to town!
Option 2: Write an analysis of how the filmmakers of one of the adaptations chose to recreate the movie. Pick a scene — for example, the desperate search for water — and describe and explain how the filmmakers adapted the novel. What parts did they keep? What parts did they change? Why do you think they did that? Do you agree with those decisions? Do you think they made for a better movie? Why or why not?
Write these answers up in a 2 paragraph essay and submit it to your instructor.
Answer:
Option 1
Explanation:
Harry: *wakes up and finds himself at the bottom of a mountain slope and asks, "Where are we?"
Harry: "Are we in Iceland?"
Hans: "Nej."
The Professor: *Gets up and says, "what do you mean? No----What are your reasons?"
Harry: *Rises* "No, Hans is wrong."
After all the innumerable surprises of this journey, a yet more singular one was reserved to us. I expected to see a cone covered by snow, by extensive and widespread glaciers, in the midst of the arid deserts of the extreme northern regions, beneath the full rays of a polar sky, beyond the highest latitudes.
*Time passes while we try to figure out what is happening and where we are. Harry finds that he was saved from death because Hans had saved him.*
which action would not help a person stay safe during a tornado Giving brainliest
Answer:
B.... i think so, not sure lol
Answer:
B. Driving to get supplies
Explanation:
Don't drive in the middle of a tornado EHLBFDHS
Suggest reasons for and against the inclusion of hydrogen in the main group of the periodic table
Answer:
See explanation
Explanation:
Hydrogen has only one valence electron. Sometimes, hydrogen is included as part of group 1 or 17 in the periodic table. Is this correct? Well, the answer to this question is not so straight forward!
Let us remember that hydrogen forms a univalent positive ion H^+ just like the group 1 elements, but it also forms a univalent negative ion H^- just like group 17 elements. Also, hydrogen is a gas and forms a molecular diatomic compound just like group 17 elements. This is not the case with other group 1 elements. We can see that hydrogen is chemically and physically dissimilar to other group 1 elements hence one can logically argue against its inclusion in group 1. Also, it is not a halogen, so we can also argue against its inclusion in group 17.
However, it is convenient to include hydrogen in the main groups 1 or 17 when discussing its chemical properties in order to make it easier to assimilate. If we place hydrogen in group 1, we can understand that it forms univalent positive ions. Similarly, if we place it in group 17, we understand that it forms univalent negative ions.
Most times hydrogen is just written separately at the top right corner of the periodic table and not as a member of any group because of the issues outlined above.
Hydrogen is placed in the main group of the periodic table since it has only one electron in it and it also behaves like alkali metal properties.
Hydrogen atom:Hydrogen forms a univalent positive ion [tex]H^+[/tex]group 1 elements, but it also forms a univalent negative ion [tex]H^-[/tex]group 17 elements. Also, hydrogen is a gas and forms a molecular diatomic compound just like group 17 elements.
This is not the case with other group 1 elements. We can see that hydrogen is chemically and physically dissimilar to other group 1 elements hence one can logically argue against its inclusion in group 1. Also, it is not a halogen, so we can also argue against its inclusion in group 17.
If we place hydrogen in group 1, we can understand that it forms univalent positive ions and if it is placed in halogen group it will form univalent negative ion.
Find more information about Hydrogen here:
brainly.com/question/25597694
There is about 30 g of Californium-252 left, how much time has elapsed?
You haven't provided two critical pieces of info needed to answer this question. First, what's the half-life of Californium-252, and second, what's the initial amount of Californium-252. Given these two values, you can then set up an exponential equation to find the time elapsed.
Describe the motion of particles in a liquid as it freezes.
Answer:
The particles in a liquid as it freezes slow down.
Explanation:
This is because heat is energy and when there is less heat, there is less energy causing the particles to slow down.
What is the mass of 0.8 mole of water molecules.
Answer:14.4g
Explanation:
Write a chemical equation showing how each behaves as an acid when dissoblbed in water.
a. H2s
b. NH4
Answer:
a. H₂S(aq) + H₂O(l) ⇄ HS⁻(aq) + H₃O⁺(aq)
b. NH₄⁺(aq) + H₂O(l) ⇄ NH₃(aq) + H₃O⁺(aq)
Explanation:
According to Bronsted-Lowry acid-base theory,
An acid is a substance that donates a H⁺.A base is a substance that accepts a H⁺.a. When dissolved in water, H₂S behaves as an acid according to the following equation.
H₂S(aq) + H₂O(l) ⇄ HS⁻(aq) + H₃O⁺(aq)
b. When dissolved in water, NH₄⁺ behaves as an acid according to the following equation.
NH₄⁺(aq) + H₂O(l) ⇄ NH₃(aq) + H₃O⁺(aq)
1. A dry food product is contained in a 1 cm x 4 cm x 3 cm box using a polymer film to protect the oxygen sensitivity of the product. The concentration gradient across the film is defined by the oxygen concentration in air (0.01164 kg/m3) and 0.244 kg/m3 within the package. The oxygen diffusivity for the polymer film is 3 x 10-16 m2/s. Estimate a- the allowable flux of oxygen into the package (in kg O2/s), and b- the film thickness needed, to ensure a product shelf life of 10 months. The shelf life of the product is established as the time when oxidation reactions within the product have used 0.5 mol of oxygen.
Answer:
total is 20.8
Explanation:
thttjhrrdghg
Daniella found an iron metal cube. The volume of the cube is 20 cm3 as shown below.
non
20.0 cm
If the density of iron is 7.9 g/cm3, what is the mass in grams of this iron cube?
A) 0.395 g
B) 2.53 g
C) 27.99
D) 158 g
Answer:b) 2.53
Explanation:
Which is a property of potassium (K)? O A. It is dull and brittle. O B. It is not reactive. O C. It is white and hard. D. It is extremely reactive.
Answer:
D. It is extremely reactive.
Explanation:
Hello!
In this case, since potassium is an alkali metal, it is known those are extremely reactive because the energy required to ionize them is very low, it means they react so easily. For instance, even in the presence of water, potassium is able to react and form a purple flame as a product of the reaction:
[tex]2K+2H_2O\rightarrow 2KOH+H_2[/tex]
As well as potassium, the rest of the elements belonging to the alkali metals series are extremely reactive; therefore the answer is D. It is extremely reactive.
Best regards!
Octet Rule states that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas. Depending on this fact answer the following question :
1)What is an incomplete octet?
2)What is an odd-electron molecule?
3)Why are there extra electrons in the expanded octet?
Answer:
1. an incomplete octet is an valence shell that is not fully stable since it doesn't have 8 electrons
2.an odd electron molecule is a molecule that has an odd number of electrons but is still stable
3. there are extra electrons in an expanded octet because the molecules' central atoms make extra bonds that don't comply with the octet rule.
Explanation:
What is the molarity of a HCl solution that
contains 6.27 g of HCl in 163 mL of solution?
Answer in units of M.
Answer:
M = 1.04 M
Explanation:
Given data
Molarity of solution = ?
Mass of HCl = 6.27 g
Volume of solution = 163 mL (163 mL× 1L /1000 mL = 0.163 L)
Solution:
Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.
Formula:
Molarity = number of moles of solute / L of solution
Number of moles of HCl:
Number of moles = mass/molar mass
Number of moles = 6.27 g / 36.5 g/mol
Number of moles = 0.17 mol
Molarity:
M = 0.17 mol/ 0.163 L
M = 1.04 M
Answer:
4.6
Explanation:
Giving Brainliest if u help me with this
Answer:
A
Explanation:
Answer:
B. The western coast of the united states
Explanation:
I'm not sure if its correct but its pretty simple to understand, if you look at the arrows red represents heat, and blue represents cold, the red arrows (warm climate) is at the left more towards the U.S, therefore looking at the guide of North West South and East, it is at the western coast of the u.s
Hope this help! <3
What volume (in liters) of a 1.772 M BaCl2 solution is needed to obtain 123 g of BaCl2?
Answer:
Volume required = 0.327 L
Explanation:
Given data:
Volume in L = ?
Molarity of solution = 1.772 M
Mass of BaCl₂ = 123 g
Solution:
First of all we will calculate the number of moles of BaCl₂,
Number of moles = mass/molar mass
Number of moles = 123 g/ 208.23 g/mol
Number of moles = 0.58 mol
Now, given problem will solve by using molarity formula.
Molarity = number of moles / volume in L
1.772 M = 0.58 mol / Volume in L
Volume in L = 0.58 mol / 1.772 M
Volume in L = 0.327 L
Perform the following
mathematical operation, and
report the answer to the correct
number of significant figures.
1.987/3.46 = [?]
Answer:
.574
Explanation:
smallest number of digits in the expression was 3, so the final answer should have 3 sig figs
