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4 years ago

14

The majority of the elements on the periodic table are categorized as

2 answers:

Gekata [30.6K]4 years ago

8 0

Types of Metals (alkali earth metals and transitional metals)

iVinArrow [24]4 years ago

7 0

Answer:

Metals

Explanation:

Study island

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Benzophenone reacts with phenylmagnesium bromide in ether solution to make triphenylmethanol after acid workup. Which of the fol

hammer [34]

Answer:

2. The glassware was not dried before use

4. The Magnesium ribbon was not wiped clean before use

Explanation:

Necessary precautions are required to be taken in the laboratory when Benzophenone reacts with phenylmagnesiumbromide in ether solution to produce Triphenylmethanol. Such precautions include proper drying of any glasswares used as well as the use of tight sealing glasswares during this experiment to ensure that the Grignard reaction is free of any traces of water or moisture. Any presence of moisture during the reaction would result in a decrease in the yield of triphenylmethanol produced thereby resulting in the decrease of the effectiveness of the Grignard reaction.

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3 years ago

1. Identify all of the gas law equations that relate to the ideal gas law.

zheka24 [161]

Explanation:

1) PV = nRT(ideal gas equation )

All of the gas laws equations that relate to the ideal gas law:

1. Boyle's law. This law states that pressure is directly proportional to the volume of the gas at constant temperature.

The equation given by this law is:

$P_1V_1=P_2V_2$

where,

$P_1\text{ and }V_1$ are initial pressure and volume.

$P_2\text{ and }V_2$ are final pressure and volume.

2. Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where,

$V_1\text{ and }T_1$ are the initial volume and temperature of the gas.

$V_2\text{ and }T_2$ are the final volume and temperature of the gas.

3. Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

$\frac{P_1}{T_1}=\frac{P_2}{T_2}$

where,

$P_1\text{ and }T_1$ are the initial pressure and temperature of the gas.

$P_2\text{ and }T_2$ are the final pressure and temperature of the gas.

4. Avogadro's law. This law states that volume is directly proportional to number of moles at constant temperature and pressure.

The equation used to calculate number of moles is given by:

$\frac{V_1}{n_1}=\frac{V_2}{n_2}$

where,

$V_1\text{ and }n_1$ are the initial volume and number of moles

$V_2\text{ and }n_2$ are the final volume and number of moles

2)

Initial moles of gas = $n_1=0.0400 mol$

Initial volume of the gas = $V_1=500 mL=0.5 L (1 mL = 0.001 L)$

Final moles of gas = $n_2=?$

Final volume of the gas = $V_2=1.00 L$

Equation used to find the amount of gas added is Avogadro's law equation :

$\frac{V_1}{n_1}=\frac{V_2}{n_2}$

$n_2=\frac{V_2\times n_1}{V_1}=\frac{1.00 L\times 0.0400 mol}{0.5 L}$

$n_2=0.08 mol$

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3 years ago

Are my state symbols correct?

Sonbull [250]

they look correct I think I am right :)

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3 years ago

What are all living things made up of

umka21 [38]

Answer: Matter

Explanation: Einstein

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3 years ago

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Pollution comes from<br> many small sources.

Digiron [165]

Answer: True

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4 years ago