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4 years ago

10

Is the equivilant of 39.3 inches

1 answer:

Stels [109]4 years ago

3 0

Answer:

3 mm is equal to 1.547244 inches. To do the calculation, use our online calculator. In the box next to “millimeters”, type 39.3. Once you have entered the number, the calculator displays the results. Once you have taken note of the numbers, click the reset button if you want to make other conversions.

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Francine makes several measurements of the mass of a metal block. The data set is shown in the table below.

BARSIC [14]

Answer:

Mean

Explanation:

The mean of a series of measurements is calculated when a<em>ll the measurements are added up and then divided by the number of measurements taken</em>, as follows:

Sum of Measurements = 20.73 + 20.76 + 20.68 + 20.75 = 82.92

As<u> there are 4 measurements</u>, the mean is:

Mean = 82.92 / 4 = 20.73

3 0

3 years ago

Plz answer asap !!!!

Semmy [17]

Answer:it's c

Explanation:

..

6 0

3 years ago

When a substance was dissolved in water, the temperature of the water increased. This process is described as

NemiM [27]

The correct answer will be A

3 0

3 years ago

The part of the atom that is free to move between materials is???

Kruka [31]

Answer:

Electrons

Explanation:

4 0

3 years ago

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

3 years ago