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zheka24 [161]
2 years ago
10

The picture below shows the positions of the Earth, Moon, and Sun during an eclipse.

Chemistry
2 answers:
SVETLANKA909090 [29]2 years ago
7 0

Answer:

it is option c liner eclipse

IRISSAK [1]2 years ago
3 0

Answer:

A-It is a lunar eclipse, in which the Earth casts a shadow on the Moon.

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H_3PO_32H_3PO_32H_3PO_3P_2O_3Answer:

B

Explanation:

This question is about stoichiometry. From the balanced equation P_2O_3 + 3H_2O⇒2H_3PO_3, we see that 3 moles of water is needed to react with 1 mole of P_2O_3.

This means that, to fully react 3.62 moles of P_2O_3, we would need 3*3.62 or  10.86 moles of water. However, we only have 6.31 moles, so water is the limiting reactant.

Since 3 moles of water react with 1 mole of P_2O_3, 6.31 moles of water can fully react with 6.31÷3 or 2.1033 moles of P_2O_3.

From the balanced equation, we see that every mole of P_2O_3 reacted gets you 2 moles of 2H_3PO_3. Therefore, 2.1033 moles of P_2O_3 would give you approximately 4.21 moles of H_3PO_3.

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2 years ago
Why is pure silicon a poor conductor at room temperature brainly
trapecia [35]
Pure silicon is a poor conductor at room temperature because it has 4 valence electrons
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Which of these choices is a benefit of international trade?
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Consider the following reaction at equilibrium. What effect will decreasing the temperature have on the system? DH=+890kJCO2(g)+
AlladinOne [14]

Answer:

Option B. The reaction will shift to the left in the direction of the reactants.

Explanation:

The equation for the reaction is given below:

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The reaction illustrated by the equation is endothermic reaction since the enthalpy change (ΔH) is positive.

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Therefore, decreasing the temperature of the system illustrated by the equation above, will shift the reaction to the left in the direction of the reactants.

Thus, option B gives the right answer to the question.

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