Step 1;calculate the molar mass of NH4N03
molar mass of different element
N=14
H=1
O=16
therefore molar mass of NH4NO3 is 14+4+14+48= 80g/mol
step 2:find the molar mass of N present in NH4NO3
That is 14+14 =28g/mol
the mass is therefore
{(28g/mol/80g/mol) x 89g} =31.15g
Answer:
The "kinetic particle theory" explains the properties of solids, liquids and gases. There are energy changes when changes in state occur.
When heat is added to a substance, the molecules and atoms vibrate faster.
As atoms vibrate faster, the space between atoms increases.
The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.
Answer:
Degree of hardness is defined as the number of parts of calcium carbonate or equivalent to various calcium and magnesium salts present in a million parts of water by mass.
Explanation:
General guidelines for classification of waters are: 0 to 60 mg/L (milligrams per liter) as calcium carbonate is classified as soft; 61 to 120 mg/L as moderately hard; 121 to 180 mg/L as hard; and more than 180 mg/L as very hard. Lime scale buildup inside a water pipe
<em>Units:</em> mg/l , ppm , kg/ , ppb , g/L
Answer:
Chemistry reactions are used in art for the following processes;
1) Analog photography
The photographic paper used in analog photography react when exposed to light such that the image on the film stains the photopaper
A series of chemicals are further used to develop the images now carried on the paper and water is used to rinse of the chemicals after the other chemical processes are complete
The photopaper, now bearing the developed photo is hung for it to be dried
2) Paint used for painting consists of several chemicals, including, minerals that serve as pigment, oils that serve as carrying agent, a thinner to prevent the paint from turning to solid
An artist therefore combines different chemicals for a given paint task
3) In the sculpting process
An original sculpture is produced by the artist with the aid of clay or plaster, from the original sculpture, on which wax coatings and chemicals are used to make a replica mold.
Copies of the sculpture can then be made by pouring material into the mold
Explanation:
Answer:
6.2 g
Explanation:
1. Calculate the number of half-lives.
2. Calculate the final mass of the substance.