Answer: An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts
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Answer:
first option is the correct answer
2.4 X 10^4 m
The question is incomplete, the complete question is;
A 31 g sample of a compound that contains only the elements C,H and N is completely burned in O2 to produce 44.0 g of CO2, 45.0 g of H2O, and 92.0 g of NO2. Determine the empirical formula of the compound.
Answer:
CH5N2
Explanation:.
Mass of C = 44.0g/44.0 g/mol = 1 mol * 1 = 1 mole of C
Mass of H = 45.0 g/18 g/mol = 2.5 moles * 2 = 5 moles of H
Mass of N = 92.0 g/46 g/mol = 2 moles * 1 = 2 moles of N
Dividing through by the lowest mole ratio;
1/1, 5/1, 2/1
1 : 5 : 2
Hence the empirical formula is;
CH5N2
Answer:
Atomic mass formula is=neutron+proton
Answer is11
Explanation:
Atomic mass=proton+neutron
=4+5
=11
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Answer: 24.1 L of 2.27 M HF will react with 3.70 kg of
Explanation:
The balanced chemical reaction :
To calculate the number of moles, we use the equation:
According to stoichiometry :
1 mole of require = 4 moles of
Thus 13.7 moles of will require= of
To calculate the volume for given molarity, we use the equation:
.....(1)
Molarity of solution = 2.27 M
Volume of solution in L= ?
Putting values in equation 1, we get:
Thus 24.1 L of 2.27 M HF will react with 3.70 kg of