3 years ago

Sand is more likely than shale to preserve fossils. True False

Chemistry

2 answers:

Arisa [49]3 years ago

8 0

False I hope this is right

lana [24]3 years ago

5 0

that would be true, sand would build up around the organism and eventually become sandstone. however, this would take a VERY long time to happen.

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noble gases are used in many situations where a safe and constant environment must be maintained. for example, helium is used to

Lapatulllka [165]

Answer:

Noble gases have a complete valence electron shell making them stable and nonreactive.

Explanation:

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2 years ago

Calculate the number of grams of nitrogen dioxide that are produced from 4 moles of nitric oxide

miv72 [106K]

Answer:

hope this help by the way found off of yahoo

Explanation:

Calculate the number of grams of nitrogen dioxide that are produced from

4 moles of nitric oxide.

2NO(g) + O2(g) -->2NO2(g)

I really need help with this... I need to know how to work it too... I can balance it out but not sure about grams... This is it balanced out with 4 moles of nitric oxide

4NO(g) + 2O2(g) ->4NO2(g) please help and explain i want to learn this

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3 years ago

How does size influence the appearance of a star? Give an example in your response

Maurinko [17]

Makes it seem bigger and brighter

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3 years ago

Read 2 more answers

Write the chemical formulae of a)dinitrogen oxide b) calcium dihydrogen phosphate

il63 [147K]

Answer:

A) Dinitrogen Oxide:

=> $N_{2}O$ (Also called Nitrous Oxide)

B) Calcium Dihydrogen Phosphate:

=> $Ca(H_{2}PO_{4})_{2}$ (Also called Monocalcium phosphate)

4 0

3 years ago

If 3.0g of H20 actually forms what is the percentage yield

Sati [7]

Percent yield is expressed as the ratio of the actual yield and the theoretical yield of the reaction multiplied by 100 to get the percent value. The actual yield is usually given in a problem. The theoretical yield is calculated from the reaction. For this problem, it cannot be solved since we cannot obtain the theoretical yield.

5 0

3 years ago