Answer:
Explanation:
The density of an object is found by dividing the mass by the volume.
The mass is 12.1 grams, but we are not given the volume. Instead, we are told that the water before is 24.2 millilitres and the water after is 28.8 millilitres.
So, the volume was taken using water displacement. We can find the volume by subtracting the initial volume from the volume after the object was added.
- v= with object - initial
- v= 28.8 mL-24.2 mL=4.6 mL
Now we know the mass and volume:
Substitute the values into the formula.
Divide.
Let's round to the nearest hundredth. The 0 in the thousandth place tells us to leave the 3.
1 milliliter is equal to 1 cubic centimer, so the density can also be written as:
The density of the rock is approximately 2.63 grams per cubic centimeter.
The ideal gas law is presented
by the equation PV = nRT. n, the number of moles, is equal to mass over molar
mass. And density is M/V.
PV = nRT
PV = (M/molar mass)RT
P/RT = (1/molar mass)(M/V)
M/V = D = (molar mass)(P/RT)
Molar mass of CO2 = 44 g/mol
D = (molar mass)(P/RT)
D = (44 g/mol)(1 atm)/(0.08206
L-atm/mol-K)(273K)
D = 1.964 g/L
It evaporates so the ice cube turns in to water then after words evaporat
Answer:
The answer would be A. the number of electrons in the outermost electron shell.
Explanation:
These are called valence electrons which are transferred, shared, and rearranged by creating covalent bonds producing new substances.
Hope this helped! :)