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nignag [31]
4 years ago
13

Scientific research can be controversial and is often ignored. Sometimes science is unable to answer particular questions.

Chemistry
1 answer:
JulijaS [17]4 years ago
8 0
True final answer to this question

Sometimes they might not know
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How does the density of ice compare with that of liquid water? What evidence can you cite to support your answer?
SpyIntel [72]

Answer: Ice is less dense than water.

Explanation: As water freezes, it expands, making it less dense. This is why ice cubes float in a glass of water.

6 0
3 years ago
At higher elevations, the boiling point of water decreases, due to the decrease in atmospheric pressure. As a result, what concl
White raven [17]
I believe the correct response is A. At higher elevations it would take less time to hard boil an egg, because there is less atmospheric pressure.
5 0
3 years ago
Activation energy is the amount of energy required to__________.
asambeis [7]

Answer:

Activation energy is the amount of energy required to convert the reactants into the activated complex (option B)

Explanation:

The activation energy is the minimum needed energy to make a reaction occurs. When the reaction occurs, the molecules of reactants joins together in a determined position, so when they bond all the molecules reactants, they make the activated complex. That's why we say, that the energy needed to make the molecules of reactants form the activated complex is finally the <em>activation energy</em>.

When the activated complex is formed, there is a few moment with all the molecules from reactants bonding together. By the end, they are separated so the products are been formed.

8 0
4 years ago
If 9.5 atms of pressure were increased to 25 atms of pressure, what would be the final volume
nordsb [41]

Answer:

The final volume of the gas is 36.1 L.

Explanation:

Given:

Initial pressure of the gas is, P_1=9.5\ atm

Final pressure of the gas is, P_2=25\ atm

Initial volume of the gas is, V_1=95\ L

Final volume of the gas is, V_2=?

Here, we shall use Boyle's Law which states that for a process under constant temperature, the pressure of the gas changes inversely with the change in volume.

Here, the pressure is increased. So, the volume of the gas is decreased.

Therefore, as per Boyle's Law:

P_1V_1=P_2V_2\\9.5\times 95=25V_2\\902.5=25V_2\\V_2=\frac{902.5}{25}\\V_2=36.1\ L

So, the final volume of the gas is 36.1 L.

4 0
3 years ago
A student takes a measured volume of 3.00 M HCl to prepare a 50.0 mL sample of 1.80 M HCL. What volume of 3.00 M HCI
netineya [11]

To solve the question you use the following formula:

concentration (1) × volume (1) = concentration (1) × volume (1)

3 M ×  volume (1)  = 1.8 M × 50 mL

volume (1)  = (1.8 M × 50 mL) / 3 M = 30 mL

8 0
4 years ago
Read 2 more answers
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