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goldfiish [28.3K]
3 years ago
10

What is it’s molecular formula? Type in the correct number based on the label cAHB A:

Chemistry
2 answers:
baherus [9]3 years ago
8 0

Answer:

A;4

B;10

Explanation:

faust18 [17]3 years ago
7 0

Answer:

Molecular formula = H2O

It's molecular formula and empirical formula are same

Explanation:

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Copper sulfate is a blue solid that is used to control algae growth. Solutions of copper sulfate that come in contact with the s
xenn [34]

Answer:

185.5156 g

Explanation:

The reaction of copper sulfate with zinc is shown below as:

CuSO_4+Zn\rightarrow ZnSO_4+Cu

Given that :

Amount of copper sulfate = 454 g

Molar mass of copper sulfate = 160 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus, moles are:

moles= \frac{454\ g}{160\ g/mol}

moles\ of\ copper\ sulfate= 2.8375\ mol

From the reaction,  

1 mole of copper sulfate reacts with 1 mole of zinc

Thus,

2.8375 moles of copper sulfate reacts with 2.8375 moles of zinc

Moles of Zinc that should react = 2.8375 moles

Mass of zinc= moles×Molar mass

Molar mass of zinc = 65.38 g/mol

Mass of zinc = 2.8375 ×65.38 g = 185.5156 g

8 0
3 years ago
Pls fast pls due today pls pls I don’t wanna fail
BabaBlast [244]

Answer:

2:true

3: true

4:false

5: true

Explanation:

6 0
3 years ago
How many protons,neutrons and electrons are present in an atom of hafnium,hf,with a mass number of 178?
AleksAgata [21]
178 of each species
178 protons
178 neutrons
And 178 electrons
7 0
4 years ago
Read 2 more answers
Why are oxidation numbers assigned to the elements before writing a chemical formula
Sergeu [11.5K]

Answer:

Oxidation numbers assign ownership of the electrons to one atom or another in a compound. ... Scientists use these numbers to help name compounds, write formulas and balance chemical equations. They are also useful when studying reactions and they can help you identify when something is oxidized or reduced.

3 0
3 years ago
Dtermine the volume in liters occupied by 0.030 miles of a gas at stp
aliina [53]
1 mole -------- 22,4 L ( at STP )
0.030 moles --- ?

V = 0.030 * 22,4 / 1

V = 0.672 L

hope this helps!
4 0
4 years ago
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