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2 years ago

Three blocks are shown here pls HELPPPP:

Chemistry

1 answer:

White raven [17]2 years ago

5 0

Answer: I am confident the answer is B

Explanation:

forgive me if im wrong

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given a density of 350 grams/cm3 and a mass of 25 grams. What is the volume using the equation involving density?

Eduardwww [97]

0.07cm³

Explanation:

Given parameters:

Density of the body = 350g/cm³

Mass of the body = 25g

Unknown:

Volume of the body = ?

Solution:

Density is the amount of substance contained in a volume of body. It is expressed as:

Density = $\frac{mass}{volume}$

Since the unknown is volume, we make it the subject of the expression;

Volume = $\frac{mass}{density}$

Volume = $\frac{25}{350}$ = 0.07cm³

learn more:

Density brainly.com/question/2690299

#learnwithBrainly

6 0

3 years ago

Chemistry question! Please explain!

Ilya [14]

There are no numbers provided so I will try to explain the equation. If you want to find the percent error you would do theoretical (the number it’s supposed to be) minus experimental (the number you got in the experiment) over the theoretical value (same as the first one.) You must multiply this by 100 in order to show the actual percentage rather than very low decimals. You want the percent error to be as low as possible because the lower it is the less mistakes happened. Mistakes can include too much/less of solvent, solution, or the glassware wasn’t clean enough, and much much more.

I hope this helps!
Please mark the brainliest if it does! (:

6 0

3 years ago

Calculate the volume needed of a stock (undiluted) solution that has a concentration of 4.2 M and is then diluted to 0.034 L of

Mnenie [13.5K]

M1V1 = M2V2

V1(4.2) = (0.66)(0.034)

V1 = 0.0053L

5 0

2 years ago

Elements in group via (group 16) have similar properties because they all have __________.

Ksivusya [100]

They all have 2 elections in the outer S orbital, and 4 electrons in the P orbitals.

6 0

2 years ago

Read 2 more answers

Whether or not the process is observed in nature, which of the following could account for the transformation of gallium-67 to z

Sonja [21]

Answer:

Option a: positron emission.

Explanation:

In the transformation we have:

⁶⁷Ga → ⁶⁷Zn

The reaction is:

$^{67}_{Z}X \rightarrow ^{67}_{Z -1}Y$

For Ga to become Zn, the atom nucleus has to lose a proton, so in the given options, the reaction that involves the transformation of a proton is the option a, positron emission.

In a positron emission, a proton becomes into a neutron and a positron:

$^{A}_{Z}X \rightarrow ^{A}_{Z-1}Y + ^{0}_{+1}e$

Therefore, the correct answer is option a: positron emission.

I hope it helps you!

7 0

2 years ago