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egoroff_w [7]
1 year ago
9

What make up molecules

Chemistry
2 answers:
AfilCa [17]1 year ago
7 0

Answer:

atom

Explanation:

because the definition of molecule is the group of an atom is called molecule

enyata [817]1 year ago
5 0

Answer:

Molecules are made up of One Or More atoms.If they contain More than One atom,the atom can be the Same Or different.

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299792458 m/s in scientific notation
erastova [34]
2.998e^8 is how I would write it. If you want it with the least amount of decimals, use 3e^8
6 0
3 years ago
Read 2 more answers
What is the mass of a magnesium block that measures 2.00 cm
skad [1K]

Answer:

m = 31.284 grams

Explanation:

Given that,

The dimension of a magnesium block is 2.00 cm  x 3.00 cm x 3.00 cm.

The density of magnesium is, d = 1.738 g/cm³

We need to find the mass of the magnesium block. We know that the density of an object is given by its mass per unit its volume. So,

d=\dfrac{m}{V}\\\\\text{Where m=mass}\\\\m=d\times V\\\\m=1.738\ g/cm^3\times (2\times 3\times 3)\ cm^3\\\\m=31.284\ \text{grams}

So, the mass of the block is 31.284 grams.

5 0
3 years ago
Calculate the number of atoms of sodium in a 4.5-gram sample
allochka39001 [22]

Answer:

1.18×10²³ atoms.

Explanation:

From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×10²³ atoms.

From the above concept, 1 mole of sodium also contains 6.02×10²³ atoms.

1 mole of sodium = 23 g.

Thus,

23 g of sodium contains 6.02×10²³ atoms.

Therefore, 4.5 g of sodium will contain = (4.5 × 6.02×10²³)/23 = 1.18×10²³ atoms.

From the above calculation,

4.5 g of sodium contains 1.18×10²³ atoms.

7 0
3 years ago
Which one of the following is different from the others A .HCl B. HF C. HBr D. HI​
lora16 [44]

Answer:

D.HI

Explanation:

because this is the most different

5 0
2 years ago
Help me answer this question for points!
labwork [276]

Answer:

I am pretty sure Danny Duncan told me 69

Explanation:

niice

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3 years ago
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