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3 years ago

Which is a derived unit? joule millimeter kilogram micrometer

Chemistry

2 answers:

madreJ [45]3 years ago

5 0

joulewwwwwwwwwwwwwwwwwwwwwwwwww

disa [49]3 years ago

4 0

It would be joule. I hope this helps!

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What is the pOH of a 7.9 x 10(-4)m OH- solution?

aleksley [76]

POH is defined as -log([OH-])

pOH = -log([OH-]) = -log(7.9 x 10^-4) = 3.1

Hope that helps! :)

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3 years ago

Identify the two main forms of energy which drive the cycling of matter on Earth.

elena-s [515]

Answer:

solar energy and chemical energy

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3 years ago

What will happen when an unboiled egg is placed in the beaker of fresh water and salt water??

brilliants [131]

Because the density of the egg is higher than the density of tap water, so it sinks.

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4 years ago

Need help !!!!! ASAP

Korolek [52]

<h2>Hello!</h2>

The answer is:

The new volume is 2.84 L.

$V_{2}=2.84L$

To solve the problem, we need to remember what STP means. STP means that the gas is at standard temperature and pressure, or 273.15 K (0°C) and 1 atm.

Also, we need to use the Combined Gas Law, since the temperature, the pressure and the volume are being changed.

The Combined Gas Law establishes a relationship between the temperature, the pressure and the volume of an ideal gas using , Gay-Lussac's Law, Charles's Law, and Boyle's Law.

The law is defined by the following equation:

$\frac{P_{1}V{1}}{T_{1}}=\frac{P_{2}V{2}}{T_{2}}$

Where,

$P_{1}$ is the first pressure.

$V_{1}$ is the first volume.

$T_{1}$ is the first temperature.

$P_{2}$ is the second pressure.

$V_{2}$ is the second volume.

$T_{2}$ is the second temperature.

So, we are given the following information:

$V_{1}=2L\\P_{1}=1atm\\T_{1}=0\°C=273.15K\\P_{2}=80kPa=0.8atm\\T_{2}=37\°C=37+273=310K$

Then, isolating the new volume, and substituting, we have:

$\frac{P_{1}V{1}}{T_{1}}=\frac{P_{2}V{2}}{T_{2}}\\\\V_{2}=\frac{P_{1}V{1}}{T_{1}}*\frac{T_{2}}{P_{2}}\\\\V_{2}=\frac{1atm*2L}{273.15K}*\frac{310K}{0.8kPa}=2.84L$

Hence, the new volume is 2.84 L.

$V_{2}=2.84L$

Have a nice day!

4 0

4 years ago

Which example best describes a double displacement reaction?

Inessa05 [86]

Answer:

The first one would describe it best

Explanation:

The second option sounds like a single displacement reaction

The third is a decomposition reaction

ANd the first is a combination reaction

6 0

4 years ago

Read 2 more answers