The cells get into your body by the lungs this answer is correct cause i had the same question and my teacher mark it correct
Answer:
I don't understand you question
Answer:
A. They must be kept separate from moisture and oxygen
Explanation:
Alkali metals refers to a group of chemical elements in the periodic table. It is the common name given to Group 1 elements (excluding hydrogen). They are generally metallic in nature with physical properties like shining lustre, silvery in appearance etc. Alkali metals include lithium, Pottasium, Sodium, Rubidium etc.
One important chemical property of alkali metals is their high reactivity i.e. they tend to react quickly with other substances. For example, alkali metals react vigorously with water to form hydroxides. They also react with oxygen to form oxides. Due to this highly reactive properties, they are kept or stored away from moisture (water) and oxygen (present in air).
The formula of ammonium carbonate is (NH4)2CO3
so as shown in the formula there are two moles of ammonium ion in each mole of ammonium carbonate .
Given : mass of ammonium carbonate = 6.955g
Molar mass of ammonium carbonate = 96 g / mol
Moles = mass / molar mass = 6.955 / 96 = 0.072 moles
So moles of ammonium ion = 2 X moles of ammonium carbonate
= 2X 0.072 = 0.144 moles