It will make you have headache and let you sleep entire hour maybe?
Answer:
Molar Mass of Calcium Carbonate = 100g
given mass = 50g
Number of mole of Calcium Carbonate =50/100 = 0.5 mole
Molarity = mole per litre of volume
Molarity = 0.5 /0.25 = 2mole/litre
Explanation:
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beryllium & calcium are the two in the same column or family
A combustion reaction of an will generally produce CO2 and H20 -- carbon dioxide and water and/or an oxide
looking at the combustion material C2H2, you know that the end products will be CO2 and H20, so the question is how much of each will you get
well, look at the total amount of carbon atoms, 2 C2, which means a total of 4 carbon atoms in this reaction, since only CO2 has carbon atoms, that means there must be 4 CO2 as an end product and 4 CO2 will use up 4 of 5 O2 molecule leaving only 1 O2 molecule for the H2 reaction.
now O2 has a total of 2 oxygen molecules whereas H20 has only a single oxygen molecule, hence the end product must have 2 H20
check that the H atoms balance out on both sides
Answer;
Molarity = 88.25 μmol/L
Explanation;
The creatinine has a concentration of 1 mg / deciliter or 10 mg / liter of blood.
( 1 dL = .1L)
note; we don't need the volume of the sample
1 liter of blood weighs 1025 g so mg creatinine / kg of blood
= 10 x 1000 / 1025 = 9.756 mg creatinine / kg of blood
Molecular weight of C4H7N3O is 113.12 g/mol
moles of creatinine = 9.756 / 113.12 = 0.0862 / kg
molality of the creatinine in blood = 8.62 X 10 ^ -5 mol / Kg of blood
or 86.2 x 10 ^ -6 mol / kg or 86.2 μmol/ Kg
86.1 * 1.025 μmol/ L = 88.25μmol/ L
Molarity = 88.25 μmol/L