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Ber [7]
3 years ago
5

5. What does the symbol in the picture represent? *

Chemistry
1 answer:
lidiya [134]3 years ago
7 0
Battery is the answer
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The density of pure solid copper is 8.94 g/mL. What volume does 34 g of copper occupy?
patriot [66]

hey there ! :

Density = 8.94 g/mL

mass = 34 g

Volume = ??

Therefore:

D = m / V

8.94 = 34 / V

V = 34 / 8.94

V = 3.803 mL

Hope this helps!

4 0
3 years ago
Completely reacting 150.0 g of a substance with oxygen releases 395.1 J of energy. How much energy would be released if 450.0 g
MrMuchimi
To solve this problem we just need to use the rule of three:
150g..................395.1J
450g................xJ

x = 450*395.1/150 = 1185,3J

450.0 g of the substance completely reacted with oxygen will produce 1.1853 kJ(<span>kiloJoule</span>)
4 0
4 years ago
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What is the density of a 805 g sample of pure silicon with a volume of 2.3 cm3?
MAVERICK [17]
The density of it would be 57. Do the math and apply the formula to it and you would get this answer.
3 0
3 years ago
What kind of molecule is depicted here?
mina [271]

Explanation:

Methane molecule is depicted here

3 0
3 years ago
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For some jobs, “good enough” is good enough. That’s sometimes true in chemistry. More often, though, careful planning, calculati
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One is: vinegar and baking soda volcano. But a more planned, complicated experiment, would be a nuclear energy program.

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