3 years ago

Why does an asteroid get hotter when it goes close to the sun?

1 answer:

4 0

It gets hotter because if the heat waves from the sun we all know the sun is really hot obviously so the heat wave make it hot

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alex41 [277]

Answer: The moles of NaOH are 0.25 moles.

Explanation:

To calculate the number of moles, we use the following formula:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Calculations for the moles of NaOH:

Given mass of NaOH = 10 g

Molar mass of NaOH = 40 g/mol

Putting values in above equation, we get:

$\text{Number of moles}=\frac{10g}{40g/mol}=0.25moles$

Hence, the moles of NaOH are 0.25 moles.

3 0

3 years ago

jekas [21]

Explanation:

its answer is displacement reaction

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3 years ago

BARSIC [14]

Answer:

Secondary research

Explanation:

Secondary research involves using already existing data, like what can be found in in books, articles, and electronic databases.

A is wrong. Primary research is the research that you do to obtain new information, as in experiments or in interviews and surveys.

B is wrong. Qualitative research is the gathering of non-numerical data.

C is wrong. Summative research is done at the end of a project to determine its success. It can also point the way to future research projects.

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3 years ago

raketka [301]

If you mix Ammonia as well as Hydrogen chloride, you will get ammonium chloride. It is given by NH3 (g) + HCl (g) → NH4Cl(s).

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3 years ago

Margarita [4]

The correct answer is A

4 0

3 years ago