Answer:
0.0953M
Explanation:
First, let us calculate the number of mole present in 12.5g of Na2CrO4.
Molar Mass of Na2CrO4 = (23x2) + 52 +(16x4) = 46 + 52 +64 = 162g/mol
Mass of Na2CrO4 = 12.5g
Number of mole =?
Number of mole =Mass /Molar Mass
mole of Na2CrO4 = 12.5/162 = 0.0772mol
Now, we can calculate for the molarity as follows:
Mole = 0.0772mol
Volume = 810mL = 810/1000 = 0.81L
Molarity =?
Molarity = mole /Volume
Molarity = 0.0772mol/0.81L
Molarity = 0.0953M
Answer:
3°F, 0°F, -11°F, -16°F, -20°F
Explanation:
The Fahrenheit scale is a temperature scale proposed in 1724 by the physicist Daniel Fahrenheit.
In this scale:
- The freezing point of water is set at 32 degrees
- The boiling point of water is set at 212 degrees
One degree in the Fahrenheit scale is indicated with the symbol
.
The equivalence between temperature in Celsius degrees and Fahrenheit degrees is as follows:
to convert from Fahrenheit to Celsius
to convert from Celsius to Fahrenheit
The Fahrenheit scale is an increasing monotonic scale, it means that temperature goes from negative values towards positive values without interruption. Therefore, the temperatures listed from warmest to coldest are:
3°F, 0°F, -11°F, -16°F, -20°F
Answer:
<h2>8</h2>
Explanation:
The pH of a solution can be found by using the formula
![pH = - log [ {H}^{+} ]](https://tex.z-dn.net/?f=pH%20%3D%20-%20log%20%5B%20%7BH%7D%5E%7B%2B%7D%20%5D)
From the question we have

We have the final answer as
<h3>8 </h3>
Hope this helps you
Milli<span>- (symbol m) is a unit </span>prefix<span> in the metric system denoting a factor of one thousandth (10</span>−3<span>). Proposed in 1793 and adopted in 1795, </span>the prefix<span> comes from the Latin mille, </span>meaning<span> "one thousand" (the Latin plural is milia).</span>