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expeople1 [14]
2 years ago
6

What does the number 84 in the name krypton-84 represent?

Chemistry
1 answer:
Mrac [35]2 years ago
3 0

Answer:

b

Explanation:

it express the mass no of the element

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How many grams of NaOH are required to neutralize 700 mL of 3.0 M HCl?
sveta [45]

A gram of NaOH required to neutralize 700 ml HCL is <u>84 grams.</u>

Neutralization or neutralization is a chemical response in which an acid and a base react quantitatively with each different. I

Moles of solute = Molarity × Liters of solution

                           = 3 × 0.7 L

                          = 2.1 mole

The molar mass of NaOH = 40

mass of NaOH = 40 × 2.1 g

                        =<u> 84 gram.</u>

A neutralization response may be described as a chemical reaction in which an acid and base quantitatively react together to shape salt and water as products. In a neutralization response, there's a combination of H+ ions and OH– ions that form water.

A neutralization response is when an acid and a base react to shape water and salt and includes the mixture of H+ ions and OH- ions to generate water. The neutralization of a sturdy acid and robust base has a pH equal to 7.

Learn more about neutralization here:-brainly.com/question/23008798

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5 0
1 year ago
What is the MOST accurate conclusion can you draw about the vaporization of the substance?
kupik [55]
<span> It requires much more energy to vaporize the substance than to melt it</span>
8 0
4 years ago
2. In the lungs, when blood enters a capillary from a vein it<br> has
antoniya [11.8K]

Answer:

This is called the pulmonary circulation. From your pulmonic valve, blood travels to the pulmonary artery to tiny capillary vessels in the lungs. Here, oxygen travels from the tiny air sacs in the lungs, through the walls of the capillaries, into the blood.

Explanation:

4 0
4 years ago
The Wolff-Kishner reaction involves the reaction of an aldehyde/ketone with hydrazine in the presence of KOH. The process is use
Ivan

Answer:

in the attached image is the reaction mechanism.

Explanation:

The first reaction (reaction 1) shown in the attached image is the Wolff-Kishner reduction, which is characterized when the carbonyl is reduced to an alkane in the presence of a hydrazine and a base. In reaction 1, the aldehyde reacts with hydrazine to produce oxime. This mechanism begins with the attack of the amine on the carbonyl group. Proton exchange happens and the water leaves the molecule.

In reaction 2, the KOH is deprotoned in nitrogen and organized to form the bond between the nitrogen molecule. this deprotonation releases the nitrogen gas

6 0
3 years ago
How many moles of cabr2 are in 5.0 grams of cabr2?
worty [1.4K]
Moles of CaBr2 = 5/molar mass of CaBr2 
                          =  5/199.886
                          = 0.025 moles.

Hope this helps!
3 0
3 years ago
Read 2 more answers
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