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Chemistry

Guest

What does mass is conserved in a chemical reaction mean

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Chemistry

Keira Pugh

Which atom has a nucleus that contains 13 protons and 14 neutrons

1. Mg

2. Be

3. Al

4. N

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Chemistry

Guest

Determine the oxidation state of the metal ion in [co (nh3) 5br]2+. express your answer as an integer.

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Chemistry

Franklin Elliott

Which functional group contains oxygen atom?

a. Carbonyl group

b. Amino group

c. Sulfhydryl group

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Chemistry

Dangelo Schultz

A mountain is a example of solid?

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Chemistry

Case Harper

Explain, in terms of electrons, why the radius of a calcium ion is smaller than the radius of a calcium atom.

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Chemistry

Amanda Parks

The silkworm feeds on what

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Chemistry

Farmer

For the reaction? Fe+? H2o ⇀↽? Fe3o4+? H2, a maximum of how many grams of fe3o4 could be formed from 354 g of fe and 839 g of h2o? Answer in units of g

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Chemistry

Aaden Mercado

Quicklime (CaO) is produced by the thermal decomposition of calcium carbonate (CaCO3). Calculate the volume of CO2 at STP produced from the decomposition of 152 g CaCO3 by the reaction.

CaCO3 - > CaO + CO2

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Chemistry

Guest

What is the nearest star in Gemini

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Chemistry

Tucker Lyons

In order for a solute to dissolve in a solvent, what must be true?

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Chemistry

Houdini

Radiocarbon dating can be used to determine the age of

A a sample less than a million years old

B a sample less than 100,000 years old

C a sample less than 50,000 years old

- D a sample less than five million years old

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Chemistry

Kelvin Miles

How many electrons in an atom can have each of the following quantum number or sublevel designations? (a) 4p (b) n = 3, l = 1, m1 = + 1 (c) n = 5, l = 3

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Chemistry

Isaias Harrison

Could the two aqueous solutions be identified through a visual inspection? Explain.

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Chemistry

Sienna Gillespie

The reaction, C2H6) (l) + 3) 2 (g) produces 2CO2 (g) + 3H2) (g), is the combustion of ethanol. What occurs as the reaction proceeds.

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