1 mole Ni = 58.6934g 1g = 1000mg 2.63mol Ni x 58.6934g Ni/mol = 154g Ni 154g Ni x 1000mg/g = 154000mg NiHope this helps! :)

4476mountvernon.com : The mass of nickel have, 15435.47 mg.

You are watching: What mass (in mg) does 2.63 moles of nickel have?

Solution : Given,

Moles of nickel = 2.63 moles

Molar mass of nickel = 58.69 g/mole

Formula used :  (1 g = 1000 mg)

Therefore, the mass of nickel have, 15435.47 mg.

A sample of raw mining ore contains a hydrated salt called copper sulfate tetrahydrate, CuSO4.4H2O, along with other impurities.

4476mountvernon.com:

88.5 % of the raw ore is CuSO4*4H2O

Explanation:

Step 1: Data given

Mass of the ore = 10.854 grams

Mass of water = 2.994 grams

Step 2: Calculate moles H2O

Moles H2O = mass H2O / molar mass H2O

Moles H2O = 2.994 grams / 18.02 g/mol

Moles H2O = 0.166 moles

Step 3: Calculate moles CuSO4*4H2O

For 1 mol CuSO4*4H2O we have 4 moles H2O

For 0.166 moles H2O we have 0.166/4 = 0.0415 moles CuSO4*4H2O

Step 4: Calculate mass CuSO4*4H2O

Mass CuSO4*4H2O = moles * molar mass

Mass CusO4*4H2O = 0.0415 moles * 231.67 g/mol

Mass CuSO4*4H2O = 9.61 grams

Step 5: Calculate mass % of CuSO4*4H2O

Mass % = (9.61 grams / 10.854 grams )*100 %

Mass % = 88.5 %

88.5 % of the raw ore is CuSO4*4H2O

4 0
1 year ago

Which of the following ions would represent the most common ion of an element from group 2A?
kvasek <131>

The ion that would represent the most common ion of an element from group 2A is A 2+

### explanation

Group 2A are group of elements in periodic table which are known as alkaline earth metals.

Example of group 2A elements is magnesium and calcium.

Group 2A has 2 valence electron in their outer most shell and therefore they form ion which is positively charged by loses the 2 valence electrons.

for example magnesium (Mg) which has 2.8.2 or 3S2 electron configuration loses the 2 valence electron to form Mg2+ ion. Therefore A2+ ion represent the common ion of group 2A element.

6 0
1 year ago

The diagram below represents changes in the types of plants growing in the same area during four different time periods. Differe
alekssr <168>

4476mountvernon.com:

ecological succession

Explanation:

3 0
2 months ago

Aqueous sulfuric acid will react with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water . Suppose 0.98 g
cestrela7 <59>

4476mountvernon.com:

0.43 grams is the maximum mass of sodium sulfate that could be produced by the chemical reaction.

Explanation:

Mass of sulfuric acid = 0.98 g

Moles of sulfuric acid = Mass of sodium hydroxide = 0.240 g

Moles of sodium hydroxide =  According to reaction, 2 moles of sodium hydroxide reacts with 1 mole of sulfuric mountain , then 0.0060 moles of sodium hydroxide will react with : of sulfuric acid

As we can see that we have 0.010 moles of sulfuric acid but only 0.0030 moles of sulfuric acid will react which indicates that it is in excessive amount where as sodium hydroxide is in limiting amount.

So, amount of sodium sulfate to be formed will depend upon moles of sodium hydroxide.

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According to reaction, 2 moles of sodium hydroxide gives with 1 mole of sodium sulfate , then 0.0060 moles of sodium hydroxide will give : of sodium sulfate

Mass of 0.0030 moles of sodium sulfate :

0.0030 mol × 142 g/mol = 0.426 g ≈ 0.43 g

0.43 grams is the maximum mass of sodium sulfate that could be produced by the chemical reaction.