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Chemistry

Talan Rubio

Suppose you begin with 1.50~g of the hydrate copper (II) sulfate · x-hydrate (CuSO4· x H2O), where x is an integer. After dehydration you find that you are left with 0.96~g of the an-hydrate CuSO4. What is the unknown integer x. Round your answer to the nearest integer, enter only an integer.

Suppose you begin with of the hydrate KAl (SO4) 2 · 12H2O. After dehydration you find that you are left with 3.0~g of the an-hydrate KAl (SO4) 2. How many grams did you start with? Write the value to the correct number of significance figures.

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Chemistry

Dixon

Which elements are found in the lithosphere

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Chemistry

Guest

What are different ways to separate praticles and grains?

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Chemistry

Guest

What chemical process is used to convert oils into fats and semi solids

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Chemistry

Carmelo Daniels

What is oxidation number of Nitrogen in F2NNO

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Chemistry

Ivan Houston

A rock formed with 1,000 atoms of a radioactive parent element, but only contains 12.5% of its original radioactive parent atoms today. if the half-life is 1,000,000 years, how old is the rock? (ess 4.6)

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Chemistry

Tapia

What is the volume occupied by 0.106 mol of helium gas at a pressure of 0.99 atm and a temperature of 309 K?

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Chemistry

Damon

I have 4 moles of CO2. How many molecules of CO2 is this?

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Chemistry

Guest

The reduced coenzymes generated by the citric acid cycle donate electrons in a series of reactions called the electron transport chain. The energy from the electron transport chain is used for oxidative phosphorylation.

a) Which compounds donate electrons to the electron transport chain?

b) Which of the following is the final electron acceptor?

c) Which of the following are the final products of the electron transport chain and oxidative phosphorylation?

Answer choices for a), b), and c) (maybe used more than once)

1. H20

2. NADH

3. NAD+

4. ATP

5. ADP

6. O2

7. FADH2

8. FAD

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Chemistry

Watts

The combining of two atomic nuclei to produce one larger nucleus is called

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Chemistry

Elsa Harding

Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide, H2O2, can be titrated against a solution of potassium permanganate, KMnO4. The following equation represents the reaction: 2KMnO4 (aq) H2O2 (aq) 3H2SO4 (aq) →3O2 (g) 2MnSO4 (aq) K2SO4 (aq) 4H2O (l) A certain amount of hydrogen peroxide was dissolved in 100. mL of water and then titrated with 1.68 M KMnO4. What mass of H2O2 was dissolved if the titration required 20.8 mL of the KMnO4 solution

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Chemistry

Alfred Gilmore

the volume of air in a diving bell changes as it descends into deep water. if the air in a diving bell occupies 9.50 L at 1.02 atm and 20.1 c what will be the volume of the air at 1.55 atm and 15.0 c

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Chemistry

Nathen Nunez

H2o Cl2 NH3 have what in common

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Chemistry

Beckett Robles

What is the composition of Gilsonite?

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Chemistry

Bryanna Duran

The mixing of which pair of reactants will result in a precipitation reaction csi (aq) + naoh (aq) hcl+ca (oh) 2

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