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3 years ago

A rabbit has a mass of 2kg. What is its weight

Chemistry

2 answers:

kobusy [5.1K]3 years ago

4 0

Answer:

weight = Mass × gravity

P= m × g

P=mg

Weight (P) = ? , Mass (m) = 2 kg , gravity (g) = 9.8 m/s²

P= mg

p = 2 × 9.8

P= 19.6 kg.m/s²

P= 19.6 N

I hope I helped you^_^

kvasek [131]3 years ago

3 0

Answer:

weight = mg

= 2 X 9.8 (g = 9.8m/s^2)

= 19.6 N is the correct answer

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I could lift 3.06 x 10⁵ m high

<h3>Further explanation </h3>

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3 years ago

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3 years ago

Use bond energies to calculate ΔHrxn Δ H r x n for the reaction. 2H2(g)+O2(g)→2H2O(g) 2 H 2 ( g ) + O 2 ( g ) → 2 H 2 O ( g )

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$\large \boxed{\text{-486 kJ}}$

Explanation:

You calculate the energy required to break all the bonds in the reactants.

Then you subtract the energy needed to break all the bonds in the products.

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$\begin{array}{rcl}\Delta H & = & \sum{mD_{\text{reactants}}} - \sum{nD_{\text{products}}}\\& = & 2 \times 436 +1 \times 498 - 4 \times 464\\&=& 1370 - 1856\\&=&\textbf{-486 kJ}\\\end{array}\\\text{The enthalpy of reaction is $\large \boxed{\textbf{-486 kJ}}$}.$

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3 years ago