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Olegator [25]
3 years ago
5

Can someone explain how to do this?

Chemistry
1 answer:
skelet666 [1.2K]3 years ago
8 0
The paper is not clear so please ask your problem again with more clear print

You might be interested in
How many moles are in 3.27 x 1027 atoms of carbon (C)? ​
rusak2 [61]

Answer:

Try:

1. How many atoms are in 6.5 moles of zinc?

6.5 moles 6.02 x 1023 atoms = 3.9 x 1024 atoms

1 mole

2. How many moles of argon are in a sample containing 2.4 x 1024 atoms of argon?

2.4 x 1024 atoms of argon 1 mole = 4.0 mol

6.02 x 1023 atoms

3. How many moles are in 2.5g of lithium?

2.5 grams Li 1 mole = 0.36 mol

6.9 g

4. Find the mass of 4.8moles of iron.

4.8 moles 55.8 g = 267.84 g = 270g

1 mole

Explanation:

i think i did it about right..?? :-(

5 0
3 years ago
If 25.16 g of chlorine react with 12.99 g of manganese metal, what is the empirical formula of the compound?
WARRIOR [948]

We use the given masses of the reactants to calculate the moles of Mn and Cl. Empirical formula represents the simplest mole ratio of atoms present in a compound.

Moles of Mn = 12.99 g Mn * \frac{1 mol Mn}{54.94 g Mn} = 0.236 mol Mn

Moles of Cl = 25.16 g Cl_{2} *\frac{1 mol Cl_{2}}{70.91 g Cl_{2}} * \frac{2 mol Cl}{1 mol Cl_{2}} = 0.710 mol Cl

Simplest mole ratio: Mn_{\frac{0.236}{0.236}}Cl_{\frac{0.710}{0.236}}

So the empirical formula is MnCl_{3}

6 0
3 years ago
2. Which number is not a coefficient in the equation,
prohojiy [21]
...........I guess D. 19
8 0
3 years ago
Read 2 more answers
Chemist preformed Reaction of solid magnesium burning and found that the mass of the magnesium oxide what is greater than the ma
tankabanditka [31]

Answer:

The magnesium reacted with the oxygen in the air.

Explanation:

For argument’s sake, let’s say that the mass of magnesium oxide was 3 g and that of the oxide was 5 g.  

The reaction was

            magnesium + oxygen ⟶ magnesium oxide

Mass:           3 g                                          5 g

Mass of oxygen = 5 g – 3 g = 2 g

The 3 g of magnesium must have combined with 2 g of oxygen to form 5 g of magnesium oxide.

4 0
3 years ago
Which answer below correctly identifies the type of change and the explanation when magnesium comes into contact with hydrochlor
Oliga [24]

Answer:

A chemical change because a temperature change occurred, the solid disappeared and a gas was produces

Explanation:

Magnesium reacts with hydrochloric acid releasing energy, and leading to the formation of  magnesium chloride and hydrogen gas. This is represented by the equation below:

Mg₍s₎ + 2HCl₍aq)⇒ MgCl₂₍aq₎ + H₂₍g₎

5 0
4 years ago
Read 2 more answers
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