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2 years ago

Please help!! my grades dying 15 points

Chemistry

1 answer:

AysviL [449]2 years ago

4 0

Answers-in-bold:

There are two common temperature scales. On the Fahrenheit scale, water freezes at 32 degrees. The Celsius scale divides the interval between the freezing and boiling points of water into 100 degrees.

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

Irina-Kira [14]

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 years ago

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Under what environmental conditions are you most likely to generate static electricity?

ch4aika [34]

If it is a really humid warm day, have you ever noticed that's when all electrical storms occur

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3 years ago

How many mol of sodium hydroxide are required to make 1.35 L of 2.50 mL solution?

Nata [24]

3 and a half mL because

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2 years ago

If 1.546 g of copper was used by a student at the start of the lab, and 0.732 g of copper were obtained at

mash [69]

Answer: Percent recovery is 47.34 %

Explanation:

Percent yield is defined as the ratio of experimental yiled to theoretical yield in terms of percentage.

${\text{ percent yield}}=\frac{\text{amount recovered}}{\text{total amount}}\times 100$

Putting in the values we get:

${\text{ percent yield}}=\frac{0.732}{1.546}\times 100=47.34\%$

Therefore, the percent recovery is 47.34 %

8 0

2 years ago

Round the answer for the following question to the correct number of significant figures: 38,736 km ÷ 4784 km

uysha [10]

Answer:

Explanation:

38736 ÷ 4784 = 8.097

Sig Figs

8.097

Decimals

8.097

Scientific Notation

8.097 × 10^0

E-Notation

8.097e+0

Words

eight point zero nine seven

4 0

2 years ago