An elephant. It's not wrong.
<u>Answer:</u> The order follows:
<u>Explanation:</u>
Gram is unit which is used to expressed mass of a substance. Many other units can be used to express the mass of a substance. All the units are inter changeable.
For the given values:
- <u>Option 1:</u> 1.8 micro grams
Conversion factor from Gram to micro gram
So,
- <u>Option 2:</u> 1.8 grams
All other units are expressed in this standard unit of mass and then, it will be compared.
- <u>Option 3:</u> 1.8 milligrams
Conversion factor from Gram to mili gram
So,
- <u>Option 4:</u> 1.8 kilograms
Conversion factor from Gram to mili gram
So,
Hence, the order follows:
Answer:
11.58 g
Explanation:
First we convert the given masses of both reactants into moles, using their respective molar masses:
- 6.89 g CaO ÷ 56 g/mol = 0.123 mol CaO
- 13.79 g H₂O ÷ 18 g/mol = 0.766 mol H₂O
As<em> 1 H₂O mol reacts completely with 1 CaO mol,</em> and there are more H₂O moles than CaO moles, water is the non limiting reactant.
We calculate the mass of the reacting moles of water (the same number of CaO moles, 0.123):
- 0.123 mol H₂O * 18 g/mol = 2.21 g
Finally we <u>calculate how many grams of water remained after the reaction</u>:
- 13.79 g - 2.21 g = 11.58 g
Answer: Yes, this is true.
Explanation: It only takes 88 days for Mercury to orbit around the sun. No other planet travels around the sun faster.
Moles of the sucrose in the reaction is given by mass of sucrose divided by relative formula mass of sucrose,(mass/R.F.M)
R.F.M of sucrose is therefore (12 x12)+(1 x22) +(16 x11) =343
number of moles=10g/342=0.029moles (answer A)