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faltersainse [42]
3 years ago
15

A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next fe

w minutes?
- Molecules in both the metal and the surrounding air will start moving at lower speeds.
-Molecules in both the metal and the surrounding air will start moving at higher speeds.
-The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up.
-The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.
Chemistry
2 answers:
Alenkinab [10]3 years ago
8 0
Answer is c I’m pretty sure
konstantin123 [22]3 years ago
4 0

Answer:

it will dilute to its natrual state. so c

Explanation:

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Calculate the molarity of a solution of monoprotic KHP prepared by mixing a 0.5237 g KHP in 50.0 mL of water .
Sergio039 [100]

Answer:

M=0.0513M

Explanation:

Hello!

In this case, since the molarity of a solution is computed by dividing the moles of solute by the volume of solution, we notice we first need the moles of KHP as shown below:

n=0.5237g*\frac{1mol}{204.22 g} =0.00256mol

Next, the volume in liters:

V=50.0mL*\frac{1L}{1000mL}\\\\V=0.0500L

Thus, the molarity turns out to be:

M=\frac{n}{V}\\\\M=\frac{0.00256mol}{0.05000L} \\\\M=0.0513M

Best regards!

3 0
3 years ago
To eight significant figures, avogadro's constant is 6.0221367×1023mol−1. which of the following choices demonstrates correct ro
FrozenT [24]
6.0221367 rounded from the last digit would be 6.022137 but when using it calculations, you should just use 6.022 x 10^23.  
5 0
3 years ago
Read 2 more answers
Given the unbalanced equation:
maw [93]

Answer:

Option (2) 2

Explanation:

NO3- + 4H+ + Pb → Pb2+ + NO2 + 2H2O

The equation above can be balance as follow:

There are 3 atoms of the left side and a total of 4 atoms on the right side. It can be balance by putting 2 in front NO3- and 2 in front of NO2 as shown below:

2NO3- + 4H+ + Pb → Pb2+ + 2NO2 + 2H2O

Now the equation is balanced.

The coefficient of NO2 is 2

8 0
3 years ago
Which of the following reactions is the least energetic? Question 18 options: ATP + H2O → ADP + Pi ATP + H2O → AMP + PPi AMP + H
Mama L [17]

Answer:

The correct answer is AMP+H2O→ Adenosine + pi

Explanation:

The above reaction is least energetic because there is no phosphoanhydride bond present with adenosine mono phosphate.Phospho anhydride bond is an energy rich bond.

As a result hydrolysis of AMP generates very little amount of energy in comparison to the hydrolysis of ATP and ADP.

   

8 0
3 years ago
I need help with these questions, please!
lbvjy [14]

Answer:

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3. The similarity is that ionic and covalent bonding lead to the creation of stable molecules.

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5. It uses the process of fission.

6. Fission involves the splitting of radioactive elements into smaller particles/compounds while Fusion involves combining of two or more atomic nuclei to form one or more different atomic nuclei and subatomic particles.

7. Nuclear power plants produce little to no greenhouse gas.

Nuclear power plants produce a large amount of energy for a small mass of fuel.

Nuclear is less expensive.

6 0
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