3 years ago

Please I'm not really sure.

Chemistry

2 answers:

vitfil [10]3 years ago

5 0

Answer:

a pea!

Explanation:

ryzh [129]3 years ago

3 0

Answer:

A pea

Explanation:

We already know a electron is smaller than a proton.

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This drawing shows the internal anatomy of a sponge.

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Answer:

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Explanation:

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3 years ago

Which is the frequency of the wave shown?

ratelena [41]

Answer:

The frequency of wave is 0.125 Hz.

Explanation:

Frequency:

"It is an event repeat itself in a given period of time"

The unit of frequency is the Hz . If time is measured in seconds then frequency will be in Hz. Hz is equal to the per second.

Formula:

f = 1/ T

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f = 0.125 Hz

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3 years ago

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Endothermic processes: are those in which occurs the absorption of heat.
the change of enthalpy (ΔH) is greater <span>than zero.
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3 years ago

Use the drop-down menus to answer the questions. Which type of radioactive decay produces particles with a positive charge and v

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Answer:

beta, gamma, gamma

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3 years ago

Predict the boiling point of water at a pressure of 1.5 atm.

Lina20 [59]

Answer:

100.8 °C

Explanation:

The Clausius-clapeyron equation is:

$ln\frac{P_{1} }{P_{2}} =$ -Δ $\frac{H_{vap}}{r} (\frac{1}{T_{2}}-\frac{1}{T_{1}} )$

Where 'ΔHvap' is the enthalpy of vaporization; 'R' is the molar gas constant (8.314 j/mol); 'T1' is the temperature at the pressure 'P1' and 'T2' is the temperature at the pressure 'P2'

Isolating for T2 gives:

$T_{2}=(\frac{1}{T_{1}} -\frac{Rln\frac{P_{2}}{P_{1}} }{Delta H_{vap}}$

(sorry for 'deltaHvap' I can not input symbols into equations)

thus T2=100.8 °C

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3 years ago