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3 years ago

HELP ME PLZZZZ ASAP

Chemistry

2 answers:

Dafna1 [17]3 years ago

7 0

Answer:

1. Sexual reproduction always requires two parents.

3. Asexual reproduction requires only one parent.

Explanation:

muminat3 years ago

6 0

Answer:

1. Sexual reproduction always requires two parents.

3. Asexual reproduction requires only one parent.

Explanation:

I took the quiz on E D G E N U I T Y

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NEED HELPPP PLSSSSSSSSSS

Leto [7]

I would pick the first option in the third option

4 0

3 years ago

A 5.098 mass % aqueous solution of potassium hydroxide has a density of 1.05 g/mL. Calculate the molality of the solution. Give

GarryVolchara [31]

<u>Answer:</u> The molarity of solution is 0.954 M

<u>Explanation:</u>

We are given:

5.098 mass % solution of potassium hydroxide

This means that 5.098 grams of potassium hydroxide is present in 100 grams of solution

To calculate volume of a substance, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

Density of solution = 1.05 g/mL

Mass of solution = 100 g

Putting values in above equation, we get:

$1.05g/mL=\frac{100g}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{100g}{1.05g/mL}=95.24mL$

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}$

Given mass of potassium hydroxide = 5.098 g

Molar mass of potassium hydroxide = 56.1 g/mol

Volume of solution = 95.24 mL

Putting values in above equation, we get:

$\text{Molarity of solution}=\frac{5.098\times 1000}{56.1\times 95.24}\\\\\text{Molarity of solution}=0.954M$

Hence, the molarity of solution is 0.954 M

7 0

4 years ago

Hydrogen fuel cells burn with _______ and produce _______.

nignag [31]

Hydrogen burns with oxygen as in combustion reaction to form water.
H₂ + O₂ → H₂O

3 0

3 years ago

Read 2 more answers

A 2.00 m2 tank of a fluid that has a density of 1000 kg/m is draining at a rate of S liters/min. Determine the time for the tank

professor190 [17]

Answer:

the "d" option

Explanation:

Cómo se pronuncia

To calculate the flow I need the volume and time to comply with the formula:

S = V / t

V = volume

t = time

In this problem I have volume and density as data.

There is no way to calculate the time so the correct answer is the "d" option

4 0

4 years ago

HELP PLEASE ILL MARK BRAINLIEST WITH ALL!

andreev551 [17]

Answer:

2) coefficient = 1

Subcript for V = 2

Subscript for O = 5

3) coefficient = 4

subscript for K = 2

subscript for C = 1

subsrcipt for O = 3

4) coefficient = 1

subscript for Na = 1

subscript for C = 2

subscript for H = 3

subscript for O = 2

Explanation:

hope this helped

4 0

3 years ago