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Gnom [1K]
3 years ago
8

Perform the following operation

Chemistry
1 answer:
Ivenika [448]3 years ago
7 0

Answer:

7.00\times 10^8-5.00\times 10^6 = 6.95\times 10^8

Explanation:

The given expression is :

7.00\times 10^8-5.00\times 10^6

We need to solve the above expression using operations and then express it in scientific notation.

First we will make the power of 10 same in both terms

7.00\times 10^8-(5.00\times 10^6\times \dfrac{100}{100})\\\\=7.00\times 10^8-(0.05\times 10^8)\\\\=(7-0.05)\times 10^8\\\\=6.95\times 10^8

Hence, the answer is 6.95\times 10^8.

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zalisa [80]
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3 0
3 years ago
A 3.664 g sample of a monoprotic acid was dissolved in water. It took 20.27 mL of a 0.1578 M NaOH solution to neutralize the aci
chubhunter [2.5K]

Answer:

Molar mass of monoprotic acid is 1145g/mol.

Explanation:

The reaction of a monoprotic acid (HX) with NaOH is:

HX + NaOH → H₂O + NaX

That means 1 mole of acid reacts with 1 mole of NaOH

If the neutralization of the acid spent 20.27mL of a 0.1578 M NaOH solution. Moles of NaOH are:

0.02027L × (0.1578mol / L) = <em>3.199x10⁻³ moles</em> NaOH ≡ moles HX.

As mass of the sample is 3.664g, molar mass of the acid is:

3.664g / 3.199x10⁻³ moles =<em> 1145g/mol</em>

5 0
4 years ago
Classify each orbital diagram for ground-state electron configurations by the rule or principle it violates.
nignag [31]
Thank you for posting your question here at brainly. I hope the answer will help. Please see below:

Aufbau violation:
4s ↑↓ 3d ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ 5s ↑
<span>3s ↑ 3p ↑ ↑ ↑ </span>
<span>Hund violation: </span>
<span>4s ↑↓ 3d ↑↓ ↑ ↓ ↑ ↑ </span>
3s ↑↓ 3p ↑↓ ↑↓
Pauli violation
<span>2s ↑↑ 2p ↑ ↑ ↑</span>
6 0
4 years ago
What is the oxidation state of nitrogen in N ?
g100num [7]

Answer:

+5

Explanation:

4 0
3 years ago
Opinion on the usage of identification of amine in daily life (medical, agriculture,etc)​
TEA [102]

Answer:

The usage is explained below

Explanation:

Amines are identified from the use of the hinsberg reaction whereby the amine is mixed well with Hinsberg reagent and done in the presence of an aqueous alkali. In this reaction, the amine will attack the electrophile which will result in the chloride being displaced and the amides being generated.

The uses of identification of amines in daily life are;

- In agriculture, it serves as a good source of making herbicides as well as acting as emulsifiers.

- In medicine, it is used in the manufacture of some popular pain killers like demerol and morphine.

- In medicine, it is used in the manufacture of an anesthetic drug known as novocaine.

- In chemical industries, amines are used as lubricating oils and also as corrosion inhibitors in boilers.

8 0
3 years ago
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