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3 years ago

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What is defined as the basic unit in the metric system that describes a quality?

1 answer:

In-s [12.5K]3 years ago

3 0

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What is defined as the basic unit in the metric system that describes a quality?

Answer:

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Explanation:

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What is the name of the element with a valence electron configuration of 2s^22p^4

goblinko [34]

Since the configuration contains the number 2s and 2p, you can assume that it is in period 2 of the periodic table. By noble gas shorthand, you start with helium, which is atomic number 2. 2s²2p^4 has 2+4 = 6 valence

Add 2+6 = 8, which is Oxygen.

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3 years ago

In which direction does a bag at rest move when a force of 20 newtons is applied from the right?

kow [346]

Answer: B!

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The residue of coal decomposition that is used in the manufacture of steel is called: 1. coal gas 2. coke 3. coal tar

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The residue of coal decomposition in the manufacture of steel is

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4 years ago

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Solid magnesium carbonate (mgco3) and solid sodium nitrate were mixed, placed in water, and stirred. what is observed? 1. mgco3

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MgCO3 will remain undissolved and
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3 years ago

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A sample of argon gas (molar mass 40 g) is at four times the absolute temperature of a sample of hydrogen gas (molar mass 2 g).

katen-ka-za [31]

Answer:

Ratio of Vrms of argon to Vrms of hydrogen = 0.316 : 1

Explanation:

The root-mean-square speed measures the average speed of particles in a gas, and is given by the following formula:

Vrms = $\sqrt{3RT/M}$

where R is molar gas constant = 8.3145 J/K.mol, T is temperature in kelvin, M is molar mass of gas in Kg/mol

For argon, M = 40/1000 Kg/mol = 0.04 Kg/mol, T = 4T , R = R

Vrms = √(3 * R *4T)/0.04 = √300RT

For hydrogen; M = 1/1000 Kg/mol = 0.001 Kg/mol, T = T, R = R

Vrms = √(3 * R *T)/0.001 = √3000RT

Ratio of Vrms of argon to that of hydrogen = √300RT / √3000RT = 0.316

Ratio of Vrms of argon to that of hydrogen = 0.316 : 1

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4 years ago