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sp2606 [1]
3 years ago
5

Does a helium balloon have a larger volume when it is heated or cooled?​

Chemistry
1 answer:
Nadusha1986 [10]3 years ago
8 0
Heated, it shrinks when cooled
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What kind of energy transformations occur when you hit a coconut with a hammer
hram777 [196]

Answer: I dont really know

Explanation:

3 0
3 years ago
What is a reaction rate?
kondaur [170]

Answer:

A reaction rate is a measure of how fast a reactant disappears or a product forms during a reaction.

Explanation:

It is usually defined as the change in concentration per unit time:

Δ(concentration)/Δt

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7 0
4 years ago
If 5.65 grams of zinc metal react with 21.6 grams of silver nitrate, how many grams of silver metal can be formed and how many g
Igoryamba
The balanced chemical reaction is:

Zn + 2AgNO3 =  Zn(NO3)2 + 2Ag

To determine the amount of the reactant left, we have to determine which is the limiting and the excess reactant. We do as follows:

5.65 g Zn ( 1 mol / 65.38 g) = 0.09 mol Zn
21.6 g AgNO3 (1 mol / 169.87 g) = 0.13 mol AgNO3

The limiting reactant would be silver nitrate since it is consumed completely in the reaction. The excess reactant would be zinc. 

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7 0
4 years ago
Read 2 more answers
Calculate the number of moles of each compound, given the number of molecules.
brilliants [131]

Answer:

1.  2.46\times 10^{21} molecules of CO₂

2. 10⁴ molecules of H₂O

3. 8.75×10³² molecules of C₆H₁₂O₆

Explanation:

1.  2.46\times 10^{21} molecules of CO₂

2. 10⁴ molecules of H₂O

3. 8.75×10³² molecules of C₆H₁₂O₆

5 0
3 years ago
Which of the following shows the 3 main jobs of a cell?
skad [1K]
C is the answer hope this helps
8 0
3 years ago
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