An inorganic salt is composed of 17.6% sodium, 39.7% chromium, and 42.8% oxygen. What is the empirical formula of this salt?

Answers

Answer 1
Empirical formula : Na2 Cr2 O7

Related Questions

Give one use of magnesium chloride

Answers

Answer:

Magnesium Chloride is used as a precursor magnesium metals.

Explanation:

In a covalent bond between identical atoms, the electrons are shared between the atoms. If the atoms are not identical, the electron distribution is so that the electrons are closer to one atom than the other. This type of bond is called a(n) covalent bond.

Answers

Answer:

If the atoms are not identical, the electron distribution is electrons are closer to one atom than the other. This type of bond is called a(n) covalent bond.

Explanation:

50 PIONTS PLZZZ HELP
What volume of 0.100 M K2S solution contains 3.5 g of the solute?

Answers

Answer:

mols solute(K2S) = grams/molar mass = ?

Then M = mols/L. You know M and mols, solve for L.

Explanation:

3.5/0.1

L= 35

Hope this helps!!

Please tell me if I have made a mistake!!

I enjoy learning from them:)

Answer:

0.32L

Explanation:

Use formula of V= wt/mm•M.
To get this information we need to first get the molar mass (mm).
mm:
K - 2 x 39.09
S - 1 x 32.06
K2S - 110.262 g/mol

Now we plug it back into the equation.
3.5g/ (110.262 g/mol) • (0.100M)
= 0.317 L of solution

To round to the correct number of siginficant figures the answer is.
= 0.32 L

Someone please help, I will give brainliest, I am desperate. NO LINKS!!!

Answers

Answer: A. 8.8%

Explanation:

Percent Error Formula: approximate error - actual value divided by actual value (Approximate-Actual/Actual). After those steps are completed, multiply by 100 to make it a percentage form.

0.365 - 0.400 = -0.035

-0.035 / 0.400 = 0.0875

0.0875 * 100 = 8.75%

8.75% rounded to the nearest tenth is 8.8%

Balance the equation:

Answers

Ca(OH)2 +2 HBr → CaBr2 + 2 H2O 

Which of following is not an ingredients for photosynthesis?

A. oxygen
B. carbon dioxide
C. light energy
D. water

Answers

Answer:

A. oxygen

Explanation:

Oxygen is the waste created after photosynthesis.

Answer:

oxygen

Explanation:

photosynthesis are for plants and plants don't need oxygen

What is the molarity of a solution of 3.0 mol of KCl in 4.0L of water?

Answers

The number of moles of a solute per liter of solution is measured using the unit of concentration known as molarity.

Thus, The approach for resolving molarity issues is quite straightforward. This describes an easy way to figure out how molarity of a solution.

Remembering the units of molarity (M): moles per liter, is the key to calculating molarity. Calculate how many moles of the solute are dissolved in a solution's liter volume to determine its molarity.

The molarity of a solution made by combining 23.7 grams of KMnO4 with 750 mL's worth of water. You must first determine the amount of moles of the solute because this example lacks the liters or moles required to determine molarity.

Thus, The number of moles of a solute per liter of solution is measured using the unit of concentration known as molarity.

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Please help me with this
Beer Lambert Law Explanation

Answers

Answer:

The Beer–Lambert law, also known as Beer's law, the Lambert–Beer law, or the Beer–Lambert–Bouguer law relates the attenuation of light to the properties of the material through which the light is travelling.

Explanation:

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Write the chemical formulas and names for the following ionic compounds. Strontium and hydroxide

Answers

Answer:

Sr(OH)2

Explanation:

Strontium hydroxide, Sr(OH)2, is a caustic alkali composed of one strontium ion and two hydroxide ions. ... Sr(OH)2 exists in anhydrous, monohydrate, or octahydrate form.

a bond in which only one pair of
electrons is shared?

Answers

Answer:

A single covalent bond

Explanation:

A single covalent bond is when only one pair of electrons is shared between atoms. A sigma bond is the strongest type of covalent bond, in which the atomic orbitals directly overlap between the nuclei of two atoms.

Answer:

Single covalent bond.

Explanation:

Single covalent bond is the type of bond in which only one pair of electrons is shared between atoms.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

2. Transfer in energy to reach the highest amount of kinetic energy for both substance B and C.

3. Slowly transfer out energy from each substance. Note the temperature at which each substance changes phase.

​Substance B changed to a liquid at
ANSWER: °C.
Substance C changed to a liquid at
ANSWER: °C.
For Science please answer the questions with the word "ANSWER"

4. Based on your observations above, which substance needed a greater decrease in kinetic energy in order to change phase?
The substance with
(medium or low) ANSWER: Pick which one it is!
attraction needed more energy transferred out in order to change phase.

Answers

The change in phase of a substance is called a physical change. The substance C with low molecular attraction needs more energy transferred out and thus its kinetic energy have to be decreased to change from gas to liquid.

What is energy transfer?

Energy can neither be created nor be destroyed. However it can be transferred from one form to the other and thus total energy of a system is conserved.

In gaseous state molecules or atoms are far apart and have minimum intermolecular forces of attraction whereas in liquid state they have medium molecular attraction and are a bit close than they are in gas state.

When a substance changes from gas state to liquid state its molecules condenses and becomes more close to each other forming higher molecular attraction.

The gas B have medium molecular attraction and thus will easily liquified with minimum energy transfer whereas, gas C is of less molecular attraction having higher kinetic energy and thus more have to transfer more energy out to liquify.

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How many moles of Iron (III) Oxide are found in 429 grams of Iron III Oxide?

Answers

Answer:

2.686485288205376 Explanation:

1 grams Iron(III) Oxide is equal to 0.0062622034690102 mole.

Which of the following methods of heat transfer causes the tectonic plates to move?

Conduction
Convection
Evaporation
Radiation

Answers

Convection. As Magma is a fluid.

1.37x1020 uranium atoms

Answers

Explanation:

1397.4 uranium atoms......

HELLLPPPP ASAP !!!! Pls

Answers

Answer:

Melting point, boiling point, state of matter at room temperature, heat of vaporization, flammability and reactivity

Explanation:

1. If the surface area of liquid is large then evaporation will be
A. small
B. large
C. moderate
D. slow

Answers

Question:-

1. If the surface area of liquid is large then evaporation will be

A. small

B. large

C. moderate

D. slow

Answer:-

B. Large

Explanation:-

Evaporation increases with increasing surface area. This is because the greater the surface area (exposed to the air), the more molecules escape into the air.

More surface area = Higher rate of evaporation.

A group of scientists are studying observable matter in a cluster of galaxies. They conclude that the cluster has only a small percentage of the mass required to keep it from
flying apart. Why does the duster remain intact?

Answers

Answer:

it is because of Dark Matter

Dark Matter, component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity. Dark matter makes up 30.1 percent of the matter-energy composition of the universe; the rest is dark energy (69.4 percent) and “ordinary” visible matter (0.5 percent).

Dark matter is composed of particles that do not absorb, reflect, or emit light, so they cannot be detected by observing electromagnetic radiation. Dark matter is material that cannot be seen directly.

Explanation:

Hope It helps

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A group of scientists is studying observable matter in a cluster of galaxies. The duster remains intact due to the gravitational pull.

What is a galaxy?

A galaxy is a collection of stars, stellar remains, interstellar gas, dust, and dark matter that are gravitationally bonded together.

Dark matter is a component of the universe whose gravitational pull can be detected rather than its luminosity. The universe's matter-energy ratio is made up of 30.1 percent dark matter, 69.4 percent dark energy, and “regular” visible matter (0.5 percent).

Since dark matter is made up of particles that do not absorb, reflect, or emit light, it is impossible to identify it through electromagnetic radiation observation. Dark matter is a substance that cannot be directly observed.

Therefore, a team of researchers is examining the material that can be seen in a clump of galaxies. Due to the gravitational force, the duster is unharmed.

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what is combined to get calcium chloride​

Answers

Calcium chloride can be created by neutralising hydrochloric acid with calcium hydroxide.

Answer:

See below

Explanation:

This is a simple reaction.

Calcium and chlorine molecule are combined to get calcium chloride.

Ca + Cl₂ → CaCl₂

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

How did the Heisenberg uncertainty principle contribute to the idea that electrons occupy “clouds,” or “orbitals”?​

Answers

How did the Heisenberg uncertainty principle contribute to the idea that electrons occupy "clouds" or "orbitals"? Because the exact position of the electron is not known,it must be assumed that the electron takes up the entire space in an orbital.

When 25.0 g of NaCl is added to 175 g of water, the mass percent (m/m) NaCl is ________. 7.00% 8.00% 12.5% 25.6% 14.3%

Answers

Answer:

12.5%

Explanation:

percent blurf = quantity of blurftotal quantity×100quantity of blurftotal quantity×100

So for percent by mass, both quantities are expressed as mass, and it’s the mass of NaCl divided by the total mass of the solution, then times 100%

mass % NaCl = 25 g/175g×100

mass %NaCl = 14.3%


Find the actual yield when the theatrical yield is 1.09g and percent yield is 90%.​

Answers

Actual yield/Theoretical yield *100= Percentage yield. So Actual yield = Percentage yield*Theoretical yield.
Therefore actual yield= 90/100 * 1.09g = 0.98g

Actual yield: 0.98 g

Is this statement true or false?


A compound is a substance made of two or more elements joined in a chemical reaction.



true


false

Answers

The correct answer is False.

This is false I hope this helps goodbye

Someone help me with this asap for 5p points and BRAINLIEST THANK YOU

Answers

Answer:

High trainability allows the owner to train the dog to handle certain things--some dog can be trained as police dogs and can be taught various jobs, so high trainability is very important

When a dog is Viscous, the dog will keep people away from your house, they will be able to keep danger away and because they are viscous they will be able to handle danger.

Loud bark- A loud bark from a dog can help alert other people when there is a intruder, it makes alot of noise so they can attract attention easily.

Quiet Bark- Ideal for pet owners who do not like noise, they bark quietly so they are not a bother to work or anyone doing something.

Calculate the empirical formula for acetaminophen(Tylenol)

Answers

The empirical formula of acetaminophen (Tylenol) is C8H9NO2.

How do you prepare 500ml of 1.77M H2SO4 solution from an 18.0M H2SO4 Stock solution

Answers

Answer:

Take 49.2-ml of 18.0 M H2SO4 stock solution and pour it into a 500-ml volumetric flask. Fill to the 500-ml line with distilled water to make 1.77M H2SO4 solution.

Explanation:

use the formula M1V1=M2V2

volume must be in liters(L)

[tex](1.77)(500 \times {10}^{ - 3} ) = (18)v2 \\ 0.885 = 18v2 \\ v2 = \frac{0.885}{18} \\ v2 = 0.04916[/tex]

0.04916L × 1000 = 49.16 ml = 49.2 ml

Nivel de energia maximo de 20Ca

Answers

Por favor provide más información

Which answer is it for number 7

Answers

Answer:

The answer is I

The 4 one represents Solids coz in solids atoms are tightly packed

how many kernels are in a bag of microwave popcorn?

Answers

There is about 95 kernels in each bag

1: How can you divide Pepper & Sand to make a solution?

Answers

To Divide Sand & Pepper to make a solution, You would need to get the base Proti and mix it with the secondary Proti than add heated water to Sand and Pepper to make the solution. Just like we went over class..

Answer:

Mixture of sand, pepper powder and salt can be separated by dissolving the mixture into water. Sand and pepper powder is insoluble in water while salt is soluble. So they are separated by the filtration method.

When a solution of cesium chloride (CsCl) is subjected to high-speed centrifugation, a stable density gradient is formed.

a. True
b. False

Answers

A as in false YWWEEEW
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