Explanation:
the molar mass of a compound can be caucaleted by adding the standar atomic masses.
Explanation:
A mixture is made of two or more substances that are not chemically combined whereas a compound is made of 2 or more elements that are chemically combined. The elements that make up the compound are combined in fixed ratios.
Answer: 3.01 * 10^35
Explanation:
500,000,000,000 * 6.02 * 10^23
Answer : The mass of the water in two significant figures is,
Explanation :
In this case the heat given by the hot body is equal to the heat taken by the cold body.
where,
= specific heat of iron metal =
= specific heat of water =
= mass of iron metal = 32.3 g
= mass of water = ?
= final temperature of mixture =
= initial temperature of iron metal =
= initial temperature of water =
Now put all the given values in the above formula, we get
Therefore, the mass of the water in two significant figures is,
Answer:
199920J
Explanation:
Given parameters:
Mass of steam = 85g
Unknown:
Heat released when the liquid is condensed = ?
Solution:
The heat released by the substance is given as;
H = mL
H is the heat released
m is the mass
L is the latent heat of steam = 2352J/g
Heat released = 85 x 2352 = 199920J