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andrey2020 [161]
3 years ago
10

A ____________ is a large body that moves around a star?

Chemistry
2 answers:
Travka [436]3 years ago
4 0

Answer:

A Planet

Explanation:

The earth for example, is a large body that orbits the sun, our local star

Makovka662 [10]3 years ago
4 0

Answer:

Planet

Explanation:

Just like Earth orbits the sun (a star).

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All of space and the matter in it is ?
Romashka-Z-Leto [24]
If this is for chemistry then it's "made up of atoms."
4 0
3 years ago
In the determination of the specific heat of a metal, why is it desirable to use the minimum volume of water that will allow imm
Softa [21]

Answer:

Because it will allow a bigger temperature change.

Explanation:

The specific heat of the metal can be calculated by the heat change between it and the water. The total amount of heat must be 0, thus, the heat of the metal (Qm) plus the heat of water (Qw):

Qm + Qw = 0

The heat is the mass multiplied by the specific heat (c) and by the temperature change:

mm*cm*ΔTm + mw*cw*ΔTw = 0

mm*cm*ΔTm = - mw*cw*ΔTw

So, as higher is the value of mw, as low is the value of ΔTw, and if ΔTw is very low, and so the calculations may not be precise.

7 0
3 years ago
What is the mole fraction of potassium dichromate, K2Cr2O7, in a solution prepared from 24.42 g of potassium dichromate and 240.
Harrizon [31]

Answer:

6.19\times 10^{-3} is the mole fraction of potassium dichromate.

Explanation:

Mass of potassium dichromate = 24.42 g

Moles of  potassium dichromate =n_1=\frac{24.42 g}{294.185 g/mol}=0.0830 mol

Mass of water = 240.0 g

Moles of water =n_2=\frac{240.0 g}{18.015 g/mol}=13.3222 mol

Mole fraction is calculated by:

\chi_1=\frac{n_1}{n_1+n_2}

\chi_1=\frac{0.0830 mol}{0.0830 mol+13.3222 mol}=0.00619=6.19\times 10^{-3}

6.19\times 10^{-3} is the mole fraction of potassium dichromate.

8 0
3 years ago
A property of a substance that is the same no matter what size of sample is tested is _____.
KengaRu [80]

Answer:

B.) an intensive property

Explanation:

Bc it is a Characteristic Property that won't change no matter what size of sample is tested

6 0
3 years ago
A/An ______ bond occurs when 2 atoms share electrons.
allsm [11]

Answer:

convalent???????

Explanation:

sowwy if it wrong

8 0
3 years ago
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