Answer: 6.48m/s
Explanation:
From the question given, we obtained the following:
M = 50 kg
Velocity =?
Momentum = 324 kg•m/s
Momentum = Mass x Velocity
Velocity = momentum /Mass
Velocity = 324 / 50
Velocity = 6.48m/s
Answer:
The nucleus contains the majority of an atom's mass because protons and neutrons are much heavier than electrons, whereas electrons occupy almost all of an atom's volume. The diameter of an atom is on the order of 10−10 m, whereas the diameter of the nucleus is roughly 10−15 m—about 100,000 times smaller.
Explanation:
Answer:
0.01 M
Explanation:
The chemist is performing a serial dilution in order tyo obtain the calibration curve for the instrument.
First we must obtain the concentration of the solution in the 250ml flask from
C1V1 = C2V2
Where;
C1 = concentration of the stock solution
V1 = volume of the stock solution
C2 = concentration of the diluted solution
V2= volume of the diluted solution
2.61 × 10 = C2 × 250
C2 = 2.61 × 10/250
C2 = 0.1 M
Hence for solution in 100ml flask;
0.1 × 10 = C2 × 100
C2 = 0.1 × 10/100
C2 = 0.01 M
Answer:
2H⁺ + 2e → H₂.
Zn → Zn²⁺ + 2e.
Explanation:
- The reaction includes two half-reactions:
<em>The reduction reaction:</em>
<em>2H⁺ + 2e → H₂.</em>
- 2.0 moles of hydrogen ions is reduced by 2 electrons to produce 1.0 mole of hydrogen gas.
<em>The oxidation reaction:</em>
<em>Zn → Zn²⁺ + 2e.</em>
- 1.0 mole of Zn metal is oxidized to Zn²⁺ and releases 2 electrons.
- <em>The overall reaction will be:</em>
<em>Zn + 2H⁺ → Zn²⁺ + H₂.</em>
Answer:
Oxygen and glucose
Explanation:
Plants use the sun, water, and CO2 to make their own energy. Glucose is the result, and Oxygen is just a biproduct.
