2 years ago

If an object does Not explode, catch fire, or dissolve, how would you describe this object? (Three answers)

Chemistry

1 answer:

yaroslaw [1]2 years ago

3 0

Non-combustible

eg:-glass,water,stone, Portland cement etc ...

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How an atom of an element reacts chemically is based on its what?

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How an atom reacts chemically depends on how willing it is to share electrons with others.

It’s electrons

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The atmosphere protects us from all of the following except (4 points)

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Estradiol is a female sexual hormone that causes maturation and maintenance of the female reproductive system. Elemental analysi

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Answer:

The molecular formula of estradiol is: $C_{18}H_{24}O_2$ .

Explanation:

Molar mass of of estradiol = M= 272.37 g/mol

Let the molecular formula of estradiol be $C_xH_yO_z$

Percentage of an element in a compound:

$\frac{\text{Number of atoms of element}\times \text{Atomic mass of element}}{\text{molecular mass of element}}\times 100$

Percentage of carbon in estradiol :

$\frac{x\times 12 g/mol}{272.37 g/mol}\times 100=79.37\%$

x = 18.0

Percentage of hydrogen in estradiol :

$\frac{y\times 1g/mol}{272.37 g/mol}\times 100=8.88\%$

y = 24.2 ≈ 24

Percentage of oxygen in estradiol :

$\frac{z\times 16 g/mol}{272.37 g/mol}\times 100=11.75\%$

z = 2

The molecular formula of estradiol is: $C_xH_yO_z:C_{18}H_{24}O_2$

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3 years ago

The radius of a uranium atom is 149 pm. How many uranium atoms would have to be laid side by side to span a distance of 4.96 mm?

nikitadnepr [17]

Answer:

4960000000 pm

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If an object does Not explode, catch fire, or dissolve, how would you describe this object? (Three answers)​

If an object does Not explode, catch fire, or dissolve, how would you describe this object? (Three answers)