# science

After 0.6523 g of CoCl_{2} \cdot 6H_{2}O is heated, the residue has a mass of 0.3423 g. Calculate the % H2O in the hydrate.

1. 👍 0
2. 👎 0
3. 👁 148

## Similar Questions

1. ### AP Chemistry

(a)calculate the mass percent of carbon in the hydrated form of the solid that has the formula BeC2O4 X 3 H2O (s). I divided 24.02 g by 151.08 g and got .16, or 16%. is that correct? Also, I'm having trouble with this follow up

2. ### AP Chemistry

A 23.9475 g sample of impure magnesium carbonate was heated to complete decomposition according to the equation MgCO3(s) → MgO(s) + CO2(g). After the reaction was complete, the solid residue (consisting of MgO and the original

3. ### Chemistry

A sample weighing 3.064 g is a mixture of Fe2O3 (molar mass = 159.69) and Al2O3 (molar mass = 101.96). When heat and a stream of H2 gas is applied to the sample, the Fe2O3 reacts to form metallic Fe and H2O(g). The Al2O3 does not

4. ### AP Chemistry

A 28.4858 g sample of impure magnesium carbonate was heated to complete decomposition according to the equation MgCO3(s)→MgO(s) + CO2(g).After the reaction was complete, the solid residue (consisting of MgO and the original

1. ### Chem

Plese tell me if these are right. A 15.0-mL sample of NaCl solution has a mass of 15.78g. After the NaCl is evaporated to dryness, the dry salt residue has a mass of 3.26g. Calculate the following concentrations for the NaCl

2. ### math

How many even natural-number factors does $n = 2^2 \cdot 3^1 \cdot 7^2$ have?

3. ### Chemistry

A hydrate of copper (II) sulfate with formula CuSO4.xH2O has a molar mass of 250.0 g/mol. 2.545 g of hydrate is heated and 63.85% of the residue is found after heating. a) Determine the value of x in the formula of the compound b)

4. ### Chemistry URGENT

A student heated a hydrated salt sample with an initial mass of 4.8702 g, After the first heating, the mass had decreased to 3.0662 g (two part question) 1. if the sample was heated to constant weight after reheating, what is the

1. ### Chemistry

0.499g of Cuso.XH2O when heated to constant weight gave a residue 0.34g The value of X is?

2. ### Chemistry

After 0.6523 g of CoCl2*6H2O is heated, the residue has a mass of 0.3423 g. Calculate the % H20 in the hydrate. What is the formula of the hydrate? -I understand how to get the % H2O in the experiment but how do you determine the

3. ### Chemistry

10.5g of zinc trioxocarbonate(iv) were heated very stronglu to a constant mass and the residue treated with excess Hcl.calculate the mass of zinc chloride

4. ### math

Which of the following options have the same value as 70\%70%70, percent of 808080? Choose 3 answers: Choose 3 answers: (Choice A) A \dfrac{70}{100}\cdot 80 100 70 ​ ⋅80start fraction, 70, divided by, 100, end fraction, dot,