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about a bakers dozen
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How many grams of CaCO3 form if 155g of water reacts?
Reacts with what? You need CO2 and you need a calcium source
How many moles are in forty grams of calcium?
For this you need the atomic mass of Ca. Take the number of grams and divide it by the atomic mass. Multiply by one mole for units to cancel.40.0 grams Ca / (40.08 grams) = .998 moles Ca
What are the nutritional needs of a teenager?
Teenagers need additional calories to provide energy for growth the boys between the age 11-18 needs 2500-2800 calories and girls need 2200 calories per day. Teenagers needs protein for their growth of muscles they need 45-60 grams of protein each day. Calcium is also important for the strengthening of bones to take 1200 milligrams of calcium each day teenagers are encouraged to take 2-4 servings of calcium each day. Deficiency of iron cause anemia so the boys need 12 milligrams of iron each day and girls need 15 milligrams of calcium daily.
Why do you need 40 grams of calcium and 32 grams of sulfur to make 72 grams of calcium sulfide?
From the periodic table, calcium has a molar mass of 40.078g/mol and sulfur has a molar mass of 32.065g/mol. The formula for compound formed from calcium and sulfur, calcium sulfide is CaS. The molar mass of CaS is 72.143. So, if you round the numbers, 40g of Ca + 32g of S will produce 72g of CaS.
What do a human need to get calcium and why do they need calcium?
Humans need calcium to keep their bones healthy. Calcium is found in dairy products,mainly milk, and is also added to many manufactured foods.
How many grams of calcium nitrate would you need to prepare 3.00L of a 0.500molarity solution?
0.5 = moles calcium nitrate / 3 L 0.1667 moles Ca(NO3)2 0.1667 * 148 = 24.7g Ca(NO3)2
How many normal size pills equal 4 grams?
In order to answer this I will need more information. I would need to know the size of each pill.
How much calcium does a laying chicken need a day?
3.5 % of the diet, aprox. 4-5 grams per day.
Are supplements best way to get calcium that we need each day?
no. the best way to obtain your calcium is to have a glass of milk and eat healthy.
How many atoms are in one gram of calcium?
To work this out you need to know the atomic weight of calcium and Avogadros number, which is the number of atoms in a gram atom. Calcium has an atomic weight of 40.078. Therefore a gram ato is 40.078 grams which contains 6.02214129(27)×1023 atoms. 1g of calcium contains 6.02214129(27)×1023 / 40.078 1.502 X 1022
How much calcium chloride should be added to a liter of water to produce a 35 percent solution?
1 L of water weights 1000 grams: Suppose you need X grams of calcium chloride.X grams CaCl2 / [X + 1000] grams solution = 0.35 = (35%/100%) and than solve the XX = 0.35 * (X + 1000)= 0.35X + 350X - 0.35X = 3500.65X = 350X = 350 / 0.65 = 538.46 = 538 grams of calcium chlorideAdd 538 grams of calcium chloride to 1 Litre waterand you'll getabout 1.54 kg of the 35% CaCl2 solution (this is less than 1.54 Liter!!)
How many mg of calcium does a person need?
23%
