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elena-14-01-66 [18.8K]
3 years ago
14

How do we calculate how fast (speed) Earth is rotating on its arist

Chemistry
1 answer:
strojnjashka [21]3 years ago
8 0


Speed= distance/ time
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Which of the following equations is balanced?
stiv31 [10]

Answer:

A) 4P + 5O₂  → 2P₂O₅

Explanation:

A) 4P + 5O₂  → 2P₂O₅

This equation is balanced. There are four phosphorus and ten oxygen atoms are on both side of equation.

B) 5P + 4O₂    →    2P₄O₅

This equation is not balanced. There are five phosphorus and eight oxygen atoms on left, eight phosphorus ten oxygen on right side of equation.

C) 2P + O₂    →      P₂O₅

This equation is not balanced. There are two phosphorus, two oxygen atoms on left and two phosphorus five oxygen on right side of equation.

D) 4P + 2O₂    →   2P₄O₅

This equation is not balanced. There are four phosphorus, four oxygen atoms on left and eight phosphorus ten oxygen on right side of equation.

4 0
3 years ago
Write equations showing how each of the following weak bases ionizes water to form OH-.a.) CO3^2-. Express your answer as a chem
natka813 [3]

Answer: the answer is B

Explanation: i go to connexus i had this question

7 0
3 years ago
Which statement best describes the reaction pathway graph for an exothermic reaction but not an endothermic reaction? It has a h
ruslelena [56]
Answer: "The reactants are higher in energy than the products"

Explanation:

The exothermic reactions are characterized by the release of heat to the surroundings. The reactants lose heat that is delivered to the surroundings which implies that the products will be lower in energy than the reactants.

The hills that you can see in a reaction energy diagram are not related with the final change of energy. The hills are an indication of the activation energy needed to start the reaction, but they do not measure the change of energy from the products to the reactants.

The enthalpy that is a state variable that identifies the content of heat. Then the change of enthalpy for the exothermic reactions is negative, meaning that the energy of the products is lower than the energy of the reactants. 
3 0
3 years ago
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13. What physical property is characteristic of all of the elements in the group located in the
zimovet [89]

Answer:

B. gas state at room temperature

Explanation:

6 0
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10. How much protein one should obtain from diet<br> (1 gram, 3 gram,4gram)
jarptica [38.1K]

How much protein one should obtain from diet

Answer:

4 gram

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3 years ago
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