Answer:
3.0 m/s north
Explanation:
Take north to be positive.
Initial momentum = final momentum
(1576 kg) (-32 m/s) + (1837 kg) (33 m/s) = (1576 kg + 1837 kg) v
v = 3.0 m/s
Power = (voltage) x (current)
Divide each side by (voltage):
Current = (power) / (voltage)
I = (75) / 120 =<em> 0.625 Amperes</em> = 625 mA
To measure the strength of an earthquake, you can use either a Richter scale or Mercalli scale. Richter scale uses the amplitued of the wave and the distance from the source. Mercalli scale uses observations of people and is not considered to be scientific as Richter scale.
Answer:
Explanation:
The reaction between hypothetical elements X and Y to produce hypothetical compound XY₂ is represented with the chemical equation:
That equation means that one atom (or one mole of atoms) of element X reacts with 2 atoms (or two moles of atoms) of element Y to produce one molecule (one mole of molecules) of compound XY₂.
Elements X and Y are the reactants, and compound XY₂ is the product.
Hence, the mole ratio is:
- 1 mol X : 2 mol Y : 1 mol XY₂
Since, 10.0 mol of Y completely react you can set the corresponding proportions with X and XY₂ to find how many moles of them will be in the reaction:
<u>1. Moles of X</u>:
- Theoretical ratio: 1 mol of X / 2 mol of Y
- Ratio with 10.0 mol of Y: U / 10.0 mol of Y
- Proportion: equal the two ratios: 1 mol X / 2 mol Y = U / 10.0 mol Y
- Solve for U: U = 10.0 mol Y × 1 mol X / 2 mol Y = 5.0 mol X
- Result: 5.0 moles of X are in the reaction.
<u>2. Total moles of X and Y in the reaction:</u>
- The total number of moles is the sum of the moles of the two reactants: 10.0 moles of Y + 5.0 moles of X = 15.0 moles. Hence 15.0 mol of X and Y are in the reaction: option C).
Electron
Explanation:
Electrons are negatively charged particles in an atom .
They take up the bulk of the space of an atom.
These particles are the smallest in terms of mass.
- Electrons were initially called cathode rays.
- This subatomic particle was discovered by J.J Thomson.
- He carried out experiments on the gas discharge tube.
learn more:
Subatomic particles brainly.com/question/2757829
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