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SVETLANKA909090 [29]
2 years ago
8

PLEASE HELP ASAP WILL GIVE BRAINLY AND 5 STARS

Chemistry
2 answers:
Dmitriy789 [7]2 years ago
5 0

Answer:

Student A

Explanation:

In order to have a scientific experience that is successful you need to have experiments number 1

Delicious77 [7]2 years ago
5 0

Answer: Its A!

Explanation:

I hope i helped, have a wonderful day!

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Which of these forces are acting within a nucleus? Check all that apply.
hjlf

Answer: strong nuclear forces and electrostatic forces of repulsion

Explanation:

8 0
3 years ago
A chemistry student is given 250.0 mL of clear aqueous solution at 42 C. He is told an unknown amount of a certain compound X is
lara [203]

Answer:

No

Explanation:

The solubility of a solid in water refers to the amount of that solid that dissolves in water.

It is not possible to calculate the solubility of the solid because the student threw away the first precipitate that formed. We already have the volume of water, but having lost some mass of precipitate, it has become impossible to accurately determine the solubility.

Hence the answer provided above.

7 0
3 years ago
One of the uses of methanol (CH3OH) in dilute form is as a windshield washer antifreeze. In pure form, methanol has a molar conc
Dovator [93]
<h3>Mol of methanol =12.35</h3><h3>Further explanation</h3>

Mole itself is the number of particles contained in a substance

1 mole = 6.02.10²³ particles

Mole : the ratio of the amount of substance mass and its molar mass

\large{\boxed{\boxed{\bold{mole=\frac{mass}{molar\:mass}}}}

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}

Molar concentration of methanol=24.7 M

Volume of solution = 500 ml = 0.5 L

\tt mol=M\times V\\\\mol=24.7\times 0.5\\\\mol=12.35

7 0
3 years ago
How many significant digits are in 2804
docker41 [41]

Answer:

4 significant digits

Explanation:

Zeroes placed between other digits are always significant

4 0
3 years ago
What is the ratio of ions needed to produce neutral potassium chloride?
BlackZzzverrR [31]

Answer:

A

Explanation:

Why not

4 0
3 years ago
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