3 years ago

What are 2 metric system units for measuring liquid volume?

Chemistry

1 answer:

Step2247 [10]3 years ago

3 0

Answer:

milliliters and liters.

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A 0.0884 M solution of a weak base has a pH of 11.79. What is the identity of the weak base?Weak Base KbEthylamine (CH3CH2NH2) 4

iVinArrow [24]

Answer:

The base must be ethylamine.

Explanation:

The pH of solution of a weak base gives us an idea about the Kb of the base.

$pOH=14-pH$

$pOH=14-11.79=2.21$

$pOH=-log[OH^{-}]$

$[OH^{-}]=0.0062M$

The relation between Kb and hydroxide ion concentration is:

$Kb=\frac{[OH^{-}]^{2}}{[base]}$

$Kb=\frac{0.0062X0.0062}{0.0884}=4.34X10^{-4}$

Thus the weak base must be ethylamine.

7 0

2 years ago

A container was found in the home of the victim that contained 130 g of ethylene glycol in 380 g of liquid. What was the percent

Kaylis [27]

Answer:

34.21%

Explanation:

Given parameters:

Mass of ethylene glycol in the container = 130g

Mass of the liquid in total = 380g

Unkown:

Percentage of ethylene glycol in the liquid =?

Solution

To find the percentage of the ethylene glycol in liquid, we use the expression below:

Percentage of ethylene glycol in liquid = $\frac{mass of ethylene glycol}{mass of liquid}$ x 100

Percentage of ethylene glycol = $\frac{130}{380}$ x 100

Percentage of ethylene glycol = 34.21%

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3 years ago

Which is a example of a solution

Diano4ka-milaya [45]

Answer:

Salt water

Explanation:

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