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3 years ago

PLEASE ANSWER I HAVE 15 MINS. Which best compares the gravitational force and the strong force?

Chemistry

1 answer:

vladimir1956 [14]3 years ago

5 0

I think it would be B hope not too late

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1.72 mol of LiCl in 37.5 L of solution

givi [52]

<h3>Answer:</h3>

Molarity is 0.046 M

<h3>Explanation:</h3>

We are given;

1.72 mol of LiCl in 37.5 L of solution

We will take the question to be; calculate the molarity of LiCl

Therefore,

we can start by defining molarity as the concentration of a solution in moles per liter.

Molarity of a solution is calculated by dividing the number of moles of solute by the volume of solution.

Molarity = Moles of solute ÷ Volume of the solution

Thus, in this case;

Molarity of LiCl = Moles of LiCl ÷ Volume of the solution

= 1.72 moles ÷ 37.5 L

= 0.0459 M

= 0.046 M

Therefore, the molarity of LiCl solution is 0.046 M

4 0

3 years ago

What is the single replacement reaction of Zinc + Lead(iv) Chloride

ExtremeBDS [4]

Answer:

$2Zn+PbCl_4\rightarrow 2ZnCl_2+Pb$

Explanation:

Hello there!

In this case, when referring to single replacement reactions, it is crucial for us to figure out the formula of the starting reactants; thus, we know zinc is Zn and lead (IV) chloride is PbCl₄. In such a way, the reaction proceeds as follows:

$Zn+PbCl_4\rightarrow ZnCl_2+Pb$

Which must be balanced as shown below:

$2Zn+PbCl_4\rightarrow 2ZnCl_2+Pb$

Regards!

4 0

2 years ago

An FAS calibration curve (absorbance, y-axis vs. FAS in g/mL) gave an equation he regression line of: y-3678(x)+0.056. If an unk

mezya [45]

Answer:

FAS concentration = 1.61*10^-4M

Explanation:

Beer Lambert's law relates the absorbance (A) of a substance to its concentration (c) as:

$A = \epsilon lc----(1)$

where ε = molar absorption coefficient

l = path length

A plot of 'A' vs 'c' gives a straight line with slope = εl

In addition absorbance (A) is related to % Transmittance (%T) as:

A = 2-log%T----(2)

For the FAS solution, the corresponding calibration fit is given as:

y = 3678(x) + 0.056

This implies that the slope = εl = 3678

It is given that %T = 25.6%

$A = 2-log(25.6)=0.592$

Based on equation(1):

$c = \frac{A}{\epsilon l}=\frac{0.592}{3678}=1.61*10^{-4}M$

8 0

2 years ago

Which chemical is responsible for opening the hair cuticle?

SashulF [63]

Peroxide is the chemical responsible for opening the hair cuticle

6 0

3 years ago

Which of the following best describes the forces that generate solar power

Sergeeva-Olga [200]

I believe the answer is A (it was on another Brainly question as well).

8 0

3 years ago