4 years ago

Help will give brainliest!

Chemistry

1 answer:

Nataly [62]4 years ago

8 0

Answer:

C. An organized way to test scientific ideas.

Explanation:

The Scientific Method is a series of steps to test ideas and hypothesizes. We use the Scientific Method to make it easier to organize and label things step by step.

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Which is not a functional group A. Carboxyl B. Halide C. Hydroxyl D. Protein

xeze [42]

I believe it’s B. Halide

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3 years ago

How can density be used to determine the identity of a pure substance?

OLEGan [10]

Answer:

Explanation:

You can identify an unknown substance by measuring its density and comparing your result to a list of known densities. Density = mass/volume. Assume that you have to identify an unknown metal.

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3 years ago

What is the molarity of a solution that contains 4.87 g KCI (74.55 g/mol) dissolved in in 500.0 ml water?

lbvjy [14]

Answer:

Molarity = 0.13M

Explanation:

n=m/M = 4.87/74.55= 0.065mol, V= 500ml= 0.5dm3

Applying

n= C×V

0.065= C×0.5

C= 0.13M

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3 years ago

Read 2 more answers

11. What is the molarity of a solution that has 0.512 moles of NaCl dissolved in 0.24 L of solution? (Show WORK. Circle the corr

TiliK225 [7]

Answer:

2.1 M

Explanation:

Molarity is moles per liter:

0.512 mol NaCl / 0.24 L = 2.1 M

7 0

3 years ago

Atmospheric pressure yesterday was given as 0.875 atm. Express this pressure in units of torr and also in kilopascals (kPa), res

Aneli [31]

This problem is about conversion and dimensional analysis. Important information to know:
1 atm = 760 torr = 101.325 kPa

For atm to torr conversion:

0.875 atm * (760 torr / 1 atm) = 665 torr

For atm to kPa conversion:

0.875 atm * (101.325 kPa / atm) = 88.7 kPa

Thus the answer is b) 665 torr and 88.7 kPa

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3 years ago