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4 years ago

13

1. What does it mean for a substance to be soluble?

2 answers:

balandron [24]4 years ago

4 0

Answer:

its able to be disolved i think

Explanation:

Anni [7]4 years ago

3 0

Answer:

Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent. It is measured in terms of the maximum amount of solute dissolved in a solvent at equilibrium. ... Certain substances are soluble in all proportions with a given solvent, such as ethanol in water.

Explanation:

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Temperature is an example of a categorical variable a quantitative variable either a quantitative or categorical variable neithe

ludmilkaskok [199]

Answer: Temperature is an example of a quantitative variable

Explanation:

A quantitative variable is defined as :

A variable that can assume a numerical value .
It can be ordered with respect to either magnitude or dimensions.
It is further classified into two types : interval scale and ratio scale.

Temperature comes under interval scale , because interval scale has no zero point.

For example : A 0° C Celsius does not interpret that there is no temperature.

Therefore , Temperature is an example of a quantitative variable.

Hence, the correct answer is "quantitative variable"

5 0

3 years ago

Extra points & brainlest to anyone that can help me with both answers

ki77a [65]

Answer:

1st blank: Organelles

2nd blank: Plant

3rd blank: chloroplasts

3 0

3 years ago

What is the mole fraction of NaOH in an aqueous solution that

astraxan [27]

Answer:

The mole fraction of NaOH in an aqueous solution that contain 22.9% NaOH by mass=0.882

Explanation:

We are given that

Aqueous solution that contains 22.9% NaOH by mass means

22.9 g NaOH in 100 g solution.

Mass of NaOH(WB)=22.9 g

Mass of water =100-22.9=77.1

Na=23

O=16

H=1.01

Molar mass of NaOH(MB)=23+16+1.01=40.01

Number of moles = $\frac{Given\;mass}{Molar\;mass}$

Using the formula

Number of moles of NaOH $(n_B)=\frac{W_B}{M_B}=\frac{22.9}{40.01}$

$n_B=0.572moles$

Molar mass of water=16+2(1.01)=18.02g

Number of moles of water $(n_A)=\frac{77.1}{18.02}$

$n_A=4.279 moles$

Now, mole fraction of NaOH

= $\frac{n_B}{n_B+n_A}$

$=\frac{4.279}{0.572+4.279}$

=0.882

Hence, the mole fraction of NaOH in an aqueous solution that contain 22.9% NaOH by mass=0.882

4 0

3 years ago

Which substance is most likely to heat up the fastest?

ddd [48]

The best substance to heat up the fastest would be blue fire

7 0

3 years ago

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How would one know if something is an element?

hichkok12 [17]

You would be able to tell if you could see it on the period table ig.

6 0

4 years ago

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