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3 years ago

10

What produces energy in the Sun?

2 answers:

Gwar [14]3 years ago

5 0

It is Nuclear reactions that occur in the innermost layer closet to the core.

jeka57 [31]3 years ago

3 0

Nuclear reactions Alpha reactions

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At 40 degrees Celsius , 100 grams of NaClO3 is added to 100 grams of water. The solution would be ..

Hoochie [10]

The answer would be A

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3 years ago

Most ionic compounds tend to be classified as Select one:

Dovator [93]

Most ions tend to be D. Salts. Hope this helps!

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3 years ago

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Which answer provides the correct name for the following hydrocarbon?

ivanzaharov [21]

1) Hydrocarbon: CH3 - CH2 - CH2 - CH2 - CH3

2) Only single bonds => alkane => sufix ane

3) no substitutions

4) 5 carbons = > prefix penta.

Therefore, the name is pentane.

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4 years ago

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The pressure of a sample of helium in a 200. ml container is 2.0 atm. If the helium is compressed to a pressure of 40. atm witho

Crank

Answer:

$V_2=10mL$

Explanation:

Hello there!

In this case, according to the given information, it will be possible for us to solve this problem by using the Boyle's law as an inversely proportional relationship between pressure and volume:

$P_2V_2=P_1V_1$

In such a way, we solve for the final volume, V2, and plug in the initial volume and pressure and final pressure to obtain:

$V_2=\frac{P_1V_1}{P_2} \\\\V_2=\frac{2.0atm*200.mL}{40.atm}\\\\V_2=10mL$

Regards!

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3 years ago

PLS HELP-CHEMISTRY: What is the molar concentration of an ammonia solution in which there are 0.1557 grams

harina [27]

Answer: M = 0.036 M

Explanation: Solution attached:

First convert mass of NH3 to moles

Next convert volume in mL to L

Use the formula for Molarity

M = n / L

4 0

3 years ago