They have less or more neutrons. Isotopes have same number of protons but different number of neutrons.
Answer:
930 g
Explanation:
D = m/V Multiply both sides by V
m = VD
<em>Data:
</em>
V = 372 cm³
D = 2.70 g/cm³
<em>Calculation:
</em>
m = 372 × 2.50
m = 930 g
The mass of Al is 930 g.
Answer:
volume of carbon dioxide gas would be collected during a one-year period.
Explanation:
Mass of carbon dioxide gas collected in a day = 31,000 Tonn
1 Tonn = 1000 kilogram
31,000 Tonn = 
Specific volume of the carbon dioxide gas = 
Volume of carbon dioxide gas collected in a day = V
1 year = 365 days
Volume of carbon dioxide gas collected in a year = V'
volume of carbon dioxide gas would be collected during a one-year period.
Answer:
That means Cu2O is limiting reagent and C is excess reagent
Explanation:
Based on the reaction, 1 mole of Cu2O reacts per mole of C. The ratio of reaction is 1:1.
To solve this question we need to convert the mass of each reactant to moles. The reactant with the lower amount of moles is limiting reactant and the excess reactant is the reactant with the higher number of moles.
<em>Moles Cu2O -Molar mass: 143.09 g/mol-</em>
114.2g Cu2O * (1mol / 143.09g) = 0.798 moles Cu2O
<em>Moles C -Molar mass: 12.01g/mol-</em>
11.1g C * (1mol / 12.01g) = 0.924 moles C
<h3>That means Cu2O is limiting reagent and C is excess reagent</h3>
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