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Aleksandr [31]
3 years ago
12

4. which of the following is not part of the scientists methods?

Chemistry
1 answer:
Nataliya [291]3 years ago
7 0

Answer:

a

Explanation:

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What kind of speed occurs when an object covers equal distance in an equal amount of time?
KatRina [158]

Not 100% sure if its right.

When an object covers equal distances in equal amounts of time, it is moving at a constant speed.

3 0
3 years ago
When electrons gain energy, what can they do?
beks73 [17]

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4 years ago
19.3 g of cadmium hydroxide reacted with 15.21 g of hydrobromic acid. How many grams of water can be made?
Alecsey [184]

Answer:

m_{H_2O}=3.384gH_2O

Explanation:

Hello,

In this case, the chemical reaction is:

Cd(OH)_2+2HBr\rightarrow CdBr_2+2H_2O

Thus, we first identify the limiting reactant by computing the yielded moles of water by both of the reactants:

n_{H_2O}^{by\ Cd(OH)_2}=19.3gCd(OH)_2*\frac{1molCd(OH)_2}{146.4gCd(OH)_2}*\frac{2molH_2O}{1molCd(OH)_2}=0.264molH_2O\\\\n_{H_2O}^{by\ HBr}=15.21gHBr*\frac{1molHBr}{80.9gHBr}*\frac{2molH_2O}{2molHBr}=0.188molH_2O

In such a way, since HBr yields less water than cadmium hydroxide, we infer that HBr is the limiting one, therefore, the yielded mass of water are:

m_{H_2O}=0.188molH_2O*\frac{18gH_2O}{1molH_2O}\\ \\m_{H_2O}=3.384gH_2O

Regards.

4 0
3 years ago
Pls help and make sure of your answer I have an exam tmrw and it will come
Alik [6]

Answer:

A

Explanation:

CO2 cylinder, 68% full by water capacity, warms up to room temperature (70 oF), the pressure inside the cylinder increases to 837 psi. When the same cylinder reaches 87.9 oF the entire charge becomes a gas no matter what the pressure.

4 0
2 years ago
Which structural adaptation would help a plant survive better in shady environment ?
kramer
The answer is large leaves.
 
These enable the plant to absorb more of the scarce sunlight it receives, so it can create enough nutrients for it to survive.
4 0
3 years ago
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