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yulyashka [42]
3 years ago
7

Sound molecules can "stack up" in front of airplanes traveling at very high

Chemistry
1 answer:
Eduardwww [97]3 years ago
7 0
D. Sonic booms. Hope this helps
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A carbon-12 atom has a mass of 12.00000 amu. The mass of a proton is 1.00728 amu, and the mass of a neutron is 1.00866 amu. 
Oksi-84 [34.3K]

Answer:

hell

Explanation:

8 0
3 years ago
What volume of 0.500 M HNO3(aq) must completely react to neutralize 100.0 milliliters of 0.100 M KOH(aq)?
asambeis [7]
KOH+ HNO3--> KNO3+ H2O<span>
From this balanced equation, we know that 1 mol HNO3= 1 mol KOH (keep in mind this because it will be used later).

We also know that 0.100 M KOH aqueous solution (soln)= 0.100 mol KOH/ 1 L of KOH soln (this one is based on the definition of molarity).

First, we should find the mole of KOH:
100.0 mL KOH soln* (1 L KOH soln/ 1,000 mL KOH soln)* (0.100 mol KOH/ 1L KOH soln)= 1.00*10^(-2) mol KOH.

Now, let's find the volume of HNO3 soln:
1.00*10^(-2) mol KOH* (1 mol HNO3/ 1 mol KOH)* (1 L HNO3 soln/ 0.500 mol HNO3)* (1,000 mL HNO3 soln/ 1 L HNO3 soln)= 20.0 mL HNO3 soln.

The final answer is </span>(2) 20.0 mL.<span>

Also, this problem can also be done by using dimensional analysis. 

Hope this would help~ </span>
6 0
3 years ago
Which of the following increases the reaction rate? A. Adding a catalyst to the reaction mixture B. Increasing the size of solid
pickupchik [31]
A. Adding a catalyst. A catalyst by definition is a compound that speeds up reaction rates.
7 0
3 years ago
How many neutrons are found in a stable isotope of uranium-235?
bezimeni [28]

thx but it's actually 143

8 0
3 years ago
What is the volume of 120 mg of water?<br> A. 1.2 dL<br> B. 120 mL<br> C. 120 L<br> D. 1.2 L
mojhsa [17]
I would say B but I am not sure so sorry if it is wrong!!
3 0
3 years ago
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