Answer:
The number of protons also determines the identity of the element. ... Since the atom is electrically neutral, the number of electrons must equal the number of protons.
Answer:
8 moles of C
Explanation:
From the question given above, the following equation was obtained:
3A + 2B —> 6C
From the equation above,
3 moles of A reacted to produce 6 moles of C.
Thus, the number of mole of C produced by reacting 4 moles of A can be obtained as follow:
From the equation above,
3 moles of A reacted to produce 6 moles of C.
Therefore, 4 moles of C will react to produce = (4 × 6)/3 = 8 moles of C
Thus, 8 moles of C can be obtained from the reaction of 4 moles of A with excess B
1840 times lesser than
Explanation:
Robert A. Milikan from his experiment found that electrons carry exactly one unit of negative charge and that its mass is 1840 times lesser than the mass of a common hydrogen atom.
- Robert Milikan performed the oil drop experiment and was able to determine the charge on an electron.
- From Milikan's experiment, the relative mass of an electron was discovered to be about 1840 times lesser than the mass of a hydrogen atom.
- A normal hydrogen atom is a proton with an actual mass of 1.67 x 10⁻²⁷kg.
- Electrons weight 9.11 x 10⁻³¹kg which is 1840 less than the weight of a proton.
Learn more:
electrons brainly.com/question/10887448
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Answer:
n2(g)+3h2(g)→2nh3(g) balanced
Explanation:
Wayne Breslyn
Answer:
1 mole of magnesium are required to react with 2.0 mol of hydrochloric acid.
Explanation:
The balanced reaction is:
Mg + 2 HCl → MgCl₂ + H₂
The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products. That is, the law of conservation of mass implies that the sum total of charges before and after the chemical reaction remains constant.
The relationships between the quantities of reactants consumed and products formed depend directly on this conservation law, and therefore can be determined by an equation that describes them. This equality is called the stoichiometric equation.
In this case, by stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), you have:
- Mg: 1 mole
- HCl: 2 moles
- MgCl₂: 1 mole
- H₂: 1 mole
Then, <u><em>1 mole of magnesium are required to react with 2.0 mol of hydrochloric acid.</em></u>
