The mass of barium occupying 50 cubic centimeters of volume is 181 grams.
Explanation:
Given :
The denisty of barium is
To find;
The mass of a sample of barium that occupies a space of
Solution:
- The mass of barium = M
- The volume of barium = V =
- The density of the barium = D =
The density of the substance is given as:
181 grams is the mass of barium occupying 50 cubic centimeters of volume.
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Saponification means to produce soap so i think the answer is (3) saponification :)))
i hope this be helpful
Answer:
K2CrO4
Explanation:
To find the empirical formula, we need to divide each element by its atomic mass. The atomic masses of potassium, chromium and oxygen are 39.0983, 51.9961 and 15.999 respectively. We make the divisions as follows:
K = 1.04/39.0983 = 0.027
Cr = 0.70/51.9961 = 0.013
O = 0.86/15.999 = 0.054
We now divide by the smallest which is the number of moles of the Chromium
K = 0.027/0.013 = 2
Cr = 0.013/0.013 = 1
K = 0.054/0.013 = 4 approximately
The empirical formula is thus:
K2CrO4
<h3>
Answer:</h3>
1270 Psi
<h3>
Explanation:</h3>
<u>We are given;</u>
- Pressure in the tank, P₁ as 422 psi
- Temperature in the tank, T₁ as 20.0 K
- New temperature in the tank, T₂ as 60.0 K
We are required to determine the pressure at 60.0 K
- We are going to use the pressure law;
- According to the pressure law, the pressure of a gas is directly proportional to the temperature at constant volume.
- That is;
- Thus,
- At different pressures and temperature;
- Thus, rearranging the formula;
Hence;
Therefore;
P₂=1266 Psi
= 1270 Psi
Thus, the pressure at 60.0 K is 1270 Psi
Answer:
-2,044.0 kJ/mol
Explanation:
<em> I just did the test on edg</em>
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