4 years ago

Which describes the two ways that energy is measured?

Chemistry

1 answer:

faltersainse [42]4 years ago

7 0

Answer:

1 in convection and in temperature.in temperature and in.

2. in convection and in temperature b in temperature b in temperature and in radiation

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Which of the following best helps explain why an atom of Rb gas more easily loses an electron in a chemical reaction than an ato

iren2701 [21]

Answer:

Explanation:

In the Rb atom the valence electron is farther from its nucleus than the valence electron of Li is from its nucleus

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3 years ago

What is the product of Na +CaSO4,

OverLord2011 [107]

Answer:

Na + CaSO4 = Na2SO4 + Ca

Explanation:

single displacement (substitution)

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3 years ago

A certain second-order reaction (B→products) has a rate constant of 1.30×10−3 M−1⋅s−1 at 27 ∘C and an initial half-life of 224 s

soldier1979 [14.2K]

Answer:

$\large\boxed{\large\boxed{0.291M}}$

Explanation:

By definition one half-life is the time to reduce the initial concentration to half.

For a second order reaction the rate law equations are:

$\dfrac{d[B]}{dt}=-k[B]^2$

$\dfrac{1}{[B]}=\dfrac{1}{[B]_0}+kt$

The half-life equation is:

$t_{1/2}=\dfrac{1}{k[A]_0}$

Thus, substitute the rate constant $1.30\times 10^{-3}M^{-1}\cdot s^{-1}$ and the half-life time 224s to find [A]₀:

$224s=\dfrac{1}{1.30\times10^{-3}M^{-1}\cdot s^{-1}[A]_0}$

$[A]_o=0.291M$

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4 years ago

What happens to the modelling clay when press

ziro4ka [17]

The modelling clay changes shape when pressed.

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3 years ago

Read 2 more answers

If you have 3.62 moles of Tin (Sn), how many grams do you have?

lyudmila [28]

Answer:

Use molar mass:)

Explanation:

3.62 mol of Sn ( $\frac{118.7gramsSn}{mol}$ )=429.694

Since 3.62 has 3 sig figs, limit 429.694 to 3

= 430

5 0

3 years ago