Need help soon as possible

Need Help Soon As Possible

Answers

Answer 1

Answer:

I'm sorry if this isn't right but I think its Bromine? Lithium Bromide is an ionic bond, but the others don't bond with Lithium. Let me know if I am wrong.

Explanation:


Related Questions

Which time period saw the rise of small invertebrate life and fungi?

Answers

I hope it will help you !!!

Answer:

the Paleozoic Era

Explanation:


Give me an example of an average. For instance, "the average height of a person is about 5
foot 6 inches

Answers

Answer:

What is the average height of a human?

5.6 ft.

5.2 ft.

Human/Height

Image result for Give me an example of an average. For instance, "the average height of a person is about 5 foot 6 inches

However, the actual global average height of a woman is only 159.5 cm (5 ft 2.8 in) and the average height of a man is 171 cm (5 ft 7.3 in). Therefore, the height difference between men and women globally is about 4.5 inches or 12 centimeters.

Explanation:

A 4-kg mass at the Earth's surface weighs about _________________ Newtons.

Answers

Answer:

Mass(m) = 4kg. Weight of m on surface of earth = 39.2N

Which statements best describe convection? Check all that apply.

Convection occurs in solids.
Convection occurs in liquids and gases.
Convection transfers thermal energy.
Convection transfers potential energy.
Convection occurs until all of the fluid is at the same temperature.eeeeeeee
Convection occurs only one time, no matter the temperature.

Answers

Answer:

Convection occurs in liquids and gases.

Convection transfers thermal energy.

Explanation:

Question 6 of 10
Identify the correctly written chemical reaction.
A. Reactant + Reactant = Product

B. Reactant + Product → Reactant + Product

C. Product + Product → Reactant + Reactant

D. Reactant + Reactant → Product + Product
SUB AT

Answers

B reactant +product+reactant+Product

3)
Which fossil would you be most likely to find in a coal mine?
A)
dinosaur
B)
fem
human
D)
whale

Answers

Answer:

A

Explanation:

I think it is A because a dinosaurs are extinct so it wold be possible to find a dinosaur fossil in the coal mine.

is UF6 a covalent compound or an ionic compound?

Answers

it is a covalent compound

Hey there,

Given - Is UF6 a covalent compound or an ionic compound?

Answer- Covalent compound

Reason - Even though, still a subject of debate, theoretical results indicate that the U–F bond is partially covalent and could even possess some multiple bond characters, resulting from F → U π interaction cause.

~ Benjemin360

what is the correct answer for the calculation of a volume (in ml) with measured numbers 28.58/16x8.0

Answers

Answer:

45

Explanation:

the answer is 45 due to the calculation of the master calculation

I AMMMM GIVING 45 POINTSSSS PLSSS HELPPPPPPPP
The following data was collected when a reaction was performed experimentally in the laboratory.


Reaction Data
Reactants Products
Al(NO3)3 NaCl NaNO3 AlCl3
Starting Amount in Reaction 4 moles 9 moles ? ?


Determine the maximum amount of NaNO3 that was produced during the experiment. Explain how you determined this amount.

Answers

Answer:

mNaNO3 =765g

Explanation:

First, we write the balanced chemical equation representing the chemical reaction that happened between aluminum nitrate and sodium chloride.

Balanced chemical equation:

AL(NO3)3+3NaCl ⟶ 3 NaNO3+AlCl3

According to the equation, each mole of aluminum nitrate requires three moles of sodium chloride. Thus, the required number of moles of sodium chloride is

4 Mol ⋅ 3 = 12mol

Based on the data provided in the table, there were 9 moles of sodium chloride used in the reaction, which was not enough for the entirety of aluminum nitrate to react. So, sodium chloride must have been the limiting reactant.

Therefore, we use the number of moles (n) of sodium chloride to calculate the number of moles of sodium nitrate, which has a 1:1 ratio with sodium chloride.

Number of moles sodium nitrate:

nNaNO3=nNaCl

nNaNO3 = 9 mol

We can also calculate the mass (m) of sodium nitrate that was produced by multiplying its number of moles by its molar mass (MM), 85.00g/mol.

Mass of sodium nitrate produced:

mNaNO3 = nNaNO3 ⋅ MMNaNO3

mNaNO3 = 9 mol ⋅ 85.00 g/mol

mNaNO3 =765g

8.50g of CuO when heated in a current of dry hydrogen gas gave 6.58g of copper and 2.16g of wate Calculate the proportion of oxygen to hydrogen by mass in water.

Answers

The proportion of oxygen to hydrogen by mass in the water is 8 : 1

Data obtained from the question Mass of CuO = 8.50 gMass of Cu = 6.58 gMass of water = 2.16g Proportion =? How to determine the mass of O in water 1 mole of water (H₂O) = (2×1) + 16 = 18 gMass of O in water = 16 g

18 g of water contains 16 g of O.

Therefore,

2.16 g of water will contain = (2.16 × 16) / 18 = 1.92 g of O

How to determine the mass of H in water Mass of water = 2.16 gMass of O in water = 1.92 gMass of H =?

Mass of H = mass of water – mass of O

Mass of H = 2.16 – 1.92

Mass of H = 0.24 g

How to determine the proportion of oxygen to hydrogenMass of O  = 1.92 gMass of H = 0.24 gProportion =?

Proportion = oxygen / hydrogen

Proportion = 1.92 / 0.24

Proportion = 8 : 1

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is hydrogen peroxide a product

Answers

hydrogen peroxide forms as a product of metabolism. i hope this helps!

Find molarity in 1.0 grams of potassium fluoride is dissolved to make 0.10 L of solution.

Answers

We are given

Weight of [tex] \bf KF [/tex] is = 1g Volume, V = 0.10 L

__________________________________________

Molar Mass of [tex]\bf KF [/tex] –

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf 39.09 +18.99[/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf 58.08[/tex]

Using formula

[tex]\qquad[/tex] [tex]\purple{\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ W}{MV}}[/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ 1}{58.08\times 0.10}[/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{1}{5.808}[/tex]

[tex]\qquad[/tex] [tex]\purple{\twoheadrightarrow\bf Molarity _{(Solution)} = 0.1722M} [/tex]

Henceforth, Molarity of the solution is = 0.1722M.

___________________________________________

If this decay has a half-life of 2.60 years, what mass of 72.5 g sodium-22 will remain after 15.6 years

Answers

Answer:

1.1328 g left after 15.6 years

Explanation:

First we need to find, that how many times it decays: 15.6 ÷ 2.60 = 6 times

Then we know the formula: mass of original ÷ 2^n = remaining mass.

                                           :     72.5   ÷   2^6 = 1.1328 g left.

Note here n is the number of time, it decays.

Answer:

remaining mass = 1.13 grams (3-sig figs)

Explanation:

All radioactive decay follows 1st order kinetics and is defined by the expression ...

A = A₀e^⁻kt

A = final mass activity

A₀ = initial mass activity

k = rate constant = 0.693/t(half-life) = 0.693/2.60 yrs = 0.2665 yrs⁻¹

t = time of decay = 15.6 yrs

A = (72.5 g)(e^[-(0.2665 yrs⁻¹)(15.6yrs)] = 72.5 grams x 0.0156

= 1.13381331 grams (calc. ans.) ≅ 1.13 grams (3 sig figs)

How many formula units are there in 103 g of NaCl?
6.02 x 1023 NaCl formula units.
10.7 x 1023 NaCl formula units.
23 NaCl formula units.
10.7 x 1023 NaCl formula units.

Answers

Answer:

1.059 x 10^24 formula units

Explanation:

103/58.44 = 1.76 moles NaCl

1.76 x 6.022 x 10^23 = 1.059 x 10^24

A rock was found on the side of the road. The rock was very crumbly, it had layers, and contained
fossils. What type of rock was likely found?
a. Metamorphic rock
b. Igneous rock
c. Granite rock
d. Sedimentary rock

Answers

Answer:

D

Explanation:

i need help w these 2 questions​

Answers

Answer:

1. a = 2, b = 1 and c = 2

2. a = 1, b = 3, c = 2 and d = 2

Explanation:

According to law of conservation of mass, the mass can neither be created nor destroyed.

Hence, for a chemical equation the left hand side should be equal to the right hand side.

Therefore, the two balanced equations are;

2 CO + O₂ → 2 CO₂

C₂H₄ + 3 O₂ → 2 CO₂ + 2 H₂O

Which term means inflammation of a gland?
a. adenosclerosis
b. adenoma
c. adenitis
d. adenocarcinoma

Answers

Answer:

Adenitis: Inflammation of a lymph gland. From the aden-, gland + -itis, inflammation.

Inflammation of the gland can be defined by the term adenitis. Thus, option c is correct.


What is inflammation of the gland?


Inflammation is the body's immune response to an infection or an injury. This causes the white blood cells (leukocytes) of the body to move to the affected area or the tissue and results in swelling and redness.

The hardening of the gland is defined by adenosclerosis, the benign tumor of the glands is referred to as adenoma, whereas, cancer of the glands is referred to as adenocarcinoma.

In the word, adenitis, aden- is used to refer to the glands, and -itis defines inflammation. Hence, adenitis is used to define the inflammation of the glandular region.

Therefore, option c. adenitis is referred to as inflammation of the glands.

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#SPJ5

Lakes freeze from the top to bottom since ice is more dense than water.

True
False

Answers

This is most definitely true

Answer:

true because the ice freezes the top water and then freezes the water on the bottom of the lake.

At 460 K, the rate constant for this reaction is k = 5.8 × 10–6 s–1 and the activation energy is Ea = 265 kJ/mol. What is the frequency factor for this reaction?

Answers

The frequency factor from the calculation is 7.1 × 10^25.

What is the Arrhenius Equation?

The Arrhenius theory holds that the reaction between molecules owes to the collision between the reactant species. The reacting molecules must posses energy in excess of a minimum amount called the activation energy.

From the theory;

k = A e^-Ea/RT

k = rate constant

A = collision factor

Ea = activation energy

R = gas constant

T = Absolute temperature

5.8 × 10–6 = Ae^-(265 × 10^3/8.314 × 460)

A = 5.8 × 10^–6/8.1 × 10^-31

A = 7.1 × 10^25

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How many significant figures are in 463.8052

Answers

There are 7 significant figures

Answer:

it has 7 significant figures

Explanation: hope this helps<3

Which material property is most directly related to the x-axis value at the x-intercept of the interatomic force versus distance curve

Answers

Answer:

Explanation:

The mechanical properties of a material affect how it behaves as it is loaded. The elastic modulus of the material affects how much it deflects under a load, and the strength of the material determines the stresses that it can withstand before it fails

Can The collision of continental plates can push up a mountain range, after which weathering and erosion begins?

Answers

Answer:

penultimate or senile stage

Explanation:

How to write 21,000,000 in scientific notation

____ x 10 blank

Answers

Answer: [tex]2.1 * 10^7[/tex]

Explanation: To find things in scientific notation you basically just move the decimal point so that the number is in the one's place. The exponent is the number of times you moved the decimal place. Ex. 0.000003467 would be 3.467 * 10^-6 because you moved the decimal point six times to the right.

Give me an example of an average. For instance, "the average height of a person is about 5
foot 6 inches".

Answers

Average average foot 6 inchess?

(GIVING OUT BRAINLIEST!)
Identify and describe the different forms of precipitation shown in the images.

Answers

Answer: Both images seem to represent hail and ice, these conditions are only brought by chilly temperatures and rain.

Molar mass of a compound is 90.07 g/mol. Determine its molecular formula if its empirical
formula is CH20

Answers

[tex]\qquad[/tex] ☀️[tex]\pink{\bf{ {Answer = \: \: C_3H_6O_3 }}} [/tex]

For this question –

Molar formula will be =[tex]\bf {( CH_2O)}_n [/tex]

Now, let's find out value of n. Where–

[tex]\qquad[/tex] [tex]\pink{\twoheadrightarrow\bf n = \dfrac{ Molar \:Mass }{Empirical \:Mass }} [/tex]

Empirical Mass of [tex]\bf CH_2O [/tex]–

[tex]\qquad[/tex] [tex]\twoheadrightarrow\sf 12 + 1×2 + 16[/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\sf 30 [/tex]

Now, we are given, mass of compound is 90.07 g/mol.

[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf n = \dfrac{ Molar\: Mass }{Empirical\: Mass } [/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\sf n = \dfrac{90.07}{30}[/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\sf n = \cancel{ \dfrac{90.07}{30}}[/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\sf n = 3.0023[/tex]

[tex]\qquad[/tex] [tex]\pink{\twoheadrightarrow\bf n = 3 }[/tex]

Molar formula will be –

[tex]\qquad[/tex] [tex]\twoheadrightarrow\sf {( CH_2O)}_n [/tex]

[tex]\qquad[/tex] [tex]\twoheadrightarrow\sf {( CH_2O)}_3[/tex]

[tex]\qquad[/tex] [tex]\pink{\twoheadrightarrow\sf C_3H_6O_3}[/tex]

Henceforth, Molar formula will be [tex] \bf C_3H_6O_3[/tex]

The molecular formula of a compound whose empirical formula is CH20, is C3H6O3.

HOW TO CALCULATE MOLECULAR FORMULA?

The molecular formula of a compound can be calculated from the empirical formula as follows:

Empirical formula = CH2O.

(CH2O)n = 90.07g/mol

(12 + 2 + 16)n = 90.07

30n = 90.07

n = 3.00

If n = 3, the molecular formula of the compound will be (CH2O)3 = C3H6O3.

Therefore, molecular formula of a compound whose empirical formula is CH20, is C3H6O3.

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Does solar energy heat the poles more than the equator

Answers

Answer:

Places that get more solar energy have more heat. Places that get less solar energy have less heat. The air above the areas receiving more heat warms up and rises. Because of this, the air, ocean, and Earth's surface gets heated at the equator more than at the poles.

Explanation:

Answer:

no

Explanation:

The poles receive less energy than the equator, hence the poles being colder than the equator.

Putting your ear to a wall will allows you to hear the noise the other side better than through the air. (True or False) Explain?​

Answers

Based on the information given, it should be noted that sound travels through air, and putting your ear to a wall will not allow the person to hear the noise on the other side better. Therefore, it is false.

How does sound travel?

It should be noted that when sound is created, the air particles vibrate and collide with each other. The vibrating particles pass the sound through to a person's ear and then vibrate in the eardrum.

Sound travels through air, and putting your ear to a wall will not allow the person to hear the noise on the other side better. In such a case, the noise will be better heard when it travels through the air.

In conclusion, sound needs a medium such as air to travel.

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formal charge of the following compound

Answers

Explanation:

I think it's Al(OH)3 its amphoteric in nature with chemical name Aluminium hydroxide.

hope this helps you

have a nice day :)

Rainfall is an abiotic factor. If rainfall in an ecosystem decreases, what happens to the amount of vegetation?
A. The amount of vegetation increases.
B. The amount of vegetation decreases.
C. The amount of vegetation stays the same.
D. The amount of vegetation first decreases than increases.

Answers

Answer:

B. The amount of vegetation decreases.

Explanation:

plants can't grow without rain

B

explenation: explanation’s I just got a new one
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