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Anettt [7]
3 years ago
14

4) express 55mg in kilograms

Chemistry
1 answer:
artcher [175]3 years ago
6 0
55 mg =

.00005500000 kg
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Compared with gases, liquids: A. have stronger intermolecular attractions. B. have more space between their particles. C. are mu
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4. How many moles of KBr are found in 3 Liters of 0.4 M solution?
Allisa [31]

There are 1.2 moles of KBr found in 3 Liters of 0.4 M solution.

<h3>HOW TO CALCULATE NUMBER OF MOLES?</h3>

The number of moles of a substance can be calculated by multiplying the molarity by the volume.

No. of moles = Molarity × volume

According to this question, 3L of a KBr solution are contained in a 0.4M.

no. of moles = 3L × 0.4M = 1.2moles

Therefore, there are 1.2 moles of KBr found in 3 Liters of 0.4 M solution.

Learn more about no. of moles at: brainly.com/question/14919968

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Why is it necessary to use a new salt bridge for each<br> salt bridge for each electrochemical cell?
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Answer:

salt bridge balances the charge when electrons move from one half cell to another half cell.

Explanation:

Explanation: A salt bridge balances the charge when electrons move from one half cell to another half cell. During this process the salt bridge uses its electrolyte solution which further helps in balancing charges in both the half cells. ... Therefore, for each electrochemical cell a new salt bridge is used.

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2. Which of the following is NOT a function of the saliva?
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