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Vesna [10]
3 years ago
5

What it is the total length of two pieces of rubber tubing which are 7.69 cm and 4.028 cm in length? Express this answer to the

correct number of significant figures
Chemistry
1 answer:
Brilliant_brown [7]3 years ago
6 0
The corrects answer it 9. 45
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2 Zn + O2 → 2 ZnO
meriva

Answer:

we need 6.0 moles of zinc (Zn)

Explanation:

Step 1: Data given

Number of moles ZnO produced = 6.0 moles

Step 2: The balanced equation

2 Zn + O2 → 2 ZnO

For 2 moles Zinc we need 1 mol Oxygen to produce 2 moles Zinc oxide

Step 3: Calculate moles zinc

For 2 moles Zn we need 1 mol O2 to produce 2 moles ZnO

For 6.0 moles 2nO produced, we need 6.0 moles of zinc (Zn) and 3.0 moles of O2 to react.

3 0
3 years ago
What are the charges on barium and fluorine in barium fluoride? 1 point Captionless Image Barium is +2 and fluorine is -2. Bariu
user100 [1]

Answer: Barium is +2, Fluorine is -1

Explanation:

The charge of barium is +2, and the charge of fluorine is -1. You can determine this from the periodic table groups.

The formula for barium fluoride is thus BaF2.

8 0
2 years ago
What's the compound name of Si+ C2H3O1/2?
pochemuha
What is the name of CuC2H3O2?
The answer is Copper (I) Acetate. (:
3 0
3 years ago
Which atomic property is different in each isotope of an element?
slava [35]
Mass number...use da textbook bra
6 0
3 years ago
A box has a mass of 150kg. If a net force of 3000N acts on the box, what is the box's acceleration?
zhannawk [14.2K]

Answer:

3000 ÷ 150

Explanation:

acceleration = N/kg

4 0
3 years ago
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