A sample of marble has a volume of 6 cm3 and a density of 2.76 g/cm3. What is its mass?
2 answers:
Answer:
16.56 grams
Explanation:
The density can be found using the following formula:
If we rearrange the formula for m, the mass, we should multiply both sides by v.
The mass can be found by multiplying the density and the volume. The density is 2.76 grams per cubic centimeter. The volume is 6 cubic centimeters.
Substitute the values into the formula.
Multiply. When you multiply the 2 "cm^3" will cancel each other out.
The mass of the marble is 16.56 grams.
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Answer:
The correct answer is - option C.
Explanation:
Given: the melting point of HCl is
-114.8 °C, which suggests that below this temperature HCl will be solid.
and, since the boiling point of HCl is - 85.1 °C. It is also suggested that above this temperature HCl will be gas, Therefore.
Solid -114.8 - Ordered arrangement
Liquid -85.1c - Less orderly arranged
Gaseous - Least orderly arranged
Thus, at —90 °C, HCl will be present 'in the liquid state, At — 1 °C, HCl will be present in the gaseous state and at -129 °C, HCl will be present in the solid-state. So, the molecules will be organized in a more orderly manner .
Thus, the correct answer is - option C
