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2 years ago

How many liters of solution will contain 1.5 moles of CaCl2 if the solution is 6.0 M CaCl2?

Chemistry

1 answer:

sashaice [31]2 years ago

6 0

Answer:

0.25

Explanation:

volume= number of moles over concentration

hence v=1.5/6

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A student measures the length and mass of an object records the link is 45.2 cm convert distance measurement to the correct SI b

VladimirAG [237]

As per the International System of Units is a form of metric system in which distance is expressed in meters.

The given distance is 45.2 cm

Convert centimeter (cm) to SI base unit (meter)

One hundred centimeters is equivalent to one meter

I.e. 100 cm = 1 m

Therefore, the given distance of 45.2 cm =

= 45.2 cm * 1 m/100 cm = 0.452 m

Thus, the correct SI base unit for 45.2 cm = 0.452 m

4 0

3 years ago

Which best describes thermal energy? It is the difference between internal energies of two or more substances. It is the sum of

Klio2033 [76]

Answer:

It is the portion of internal energy that can be transferred from one substance to another.

Explanation:

Thermal energy is the energy obtained by an object due to the motion of its particles.

It is also known as internal energy as it is the energy within the particles due to their motion.

Therefore, we can conclude that it is the portion of internal energy that can be transferred from one substance to another.

Hope this helps!

3 0

3 years ago

All of the elements in the actinide family are ? (liquids/radioactive).

Aleksandr [31]

Answer:

Radioactive

Explanation:

3 0

2 years ago

Read 2 more answers

I made a cup of coffee on the stove and when I went to check on it four hours later, there was no more water in the kettle.

11Alexandr11 [23.1K]

No the water evaporated
i think :) :)

3 0

2 years ago

Read 2 more answers

The solubility of o2 at 20c is 1.38 x10^-3. the partial presure of o2 in the air at sea level is 0.27 atm. using henery;s law, c

netineya [11]

Answer: The solubility of oxygen at 682 torr is $4.58\times 10^{-3}M$

Explanation:

To calculate the molar solubility, we use the equation given by Henry's law, which is:

$C_{A}=K_H\times p_{A}$

Or,

$\frac{C_{1}}{C_{2}}=\frac{p_{1}}{p_2}$

where,

$C_1\text{ and }p_1$ are the initial concentration and partial pressure of oxygen gas

$C_2\text{ and }p_2$ are the final concentration and partial pressure of oxygen gas

We are given:

Conversion factor used: 1 atm = 760 torr

$C_1=1.38\times 10^{-3}M\\p_1=0.27atm\\C_2=?\\p_2=682torr=0.897atm$

Putting values in above equation, we get:

$\frac{1.38\times 10^{-3}}{C_2}=\frac{0.27atm}{0.897atm}\\\\C_2=\frac{1.38\times 10^{-3}\times 0.897atm}{0.27atm}=4.58\times 10^{-3}M$

Hence, the solubility of oxygen gas at 628 torr is $4.58\times 10^{-3}M$

4 0

2 years ago