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Aloiza [94]
3 years ago
7

A person who has a mass of 60kg run up a flight of stairs 12m high in 20 seconds What is the weight of the person​

Chemistry
1 answer:
gavmur [86]3 years ago
6 0

132 pounds.  As you stated, their weight is 60 kg and 60 kg = 132.77 pounds

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How much energy is transferred from a plant to an herbivore that eats it? A. 5% B. 10% C. 20% D. 90%
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Answer:

B. 10%

Explanation:

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Fill in the left side of this equilibrium constant equation for the reaction of benzoic acid with water
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Pickled cucumbers remain edible much longer than fresh cucumbers. Why
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Answer:

-3135.47 kJ/mol

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Step 1: Write the balanced equation

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Step 2: Calculate the standard enthalpy change of the reaction (ΔH°r)

We will use the following expression.

ΔH°r = ∑np × ΔH°f(p) - ∑nr × ΔH°f(r)

where,

n: moles

ΔH°f: standard enthalpies of formation

p: products

r: reactants

ΔH°r = 6 mol × ΔH°f(CO₂(g)) + 3 mol × ΔH°f(H₂O(g)) - 1 mol × ΔH°f(C₆H₆(l)) - 7.5 mol × ΔH°f(O₂(g))

ΔH°r = 6 mol × (-393.51 kJ/mol) + 3 mol × (-241.82 kJ/mol) - 1 mol × (48.95 kJ/mol) - 7.5 mol × 0 kJ/mol

ΔH°r = -3135.47 kJ

Since this enthalpy change is for 1 mole of C₆H₆(l), we can express it as -3135.47 kJ/mol.

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Answer:

How can drying a hydrate help you determine its mole ratio of water to salt?

Explanation:

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