Isotopes of the same element have the same number of ____ and a different number of _.

Chemistry

2 answers:

vovangra [49]2 years ago

5 0

<span>C.) Protons, neutrons. Hope it helps :)</span>

Alona [7]2 years ago

5 0

C.) Protons and neutrons. Isotopes have same atomic number but different atomic mass number.

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30.) Use Percentages: According to the data in table above, what percentage of the energy used in the United States comes from f

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Answer:

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Explanation:

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2 years ago

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If a 500 ml sample of water contains 2.6 x 10-6 g of iron, what is the concentration of iron in ppb?

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The concentration of iron in ppb is 5.2 ppb

In atmospheric chemistry, PPM( parts per million) and PPB( parts per billion) units are used to express the concentration of gases. PPB stands for parts per billion, while PPM stands for parts of gas per million parts of air.

2.6 × 10⁻⁶ grams of iron in 500 ml of water.

Now, converting milliliter into liter:

500 mL = 500 mL × ( 1L / 1000 mL ) = 0.5 L

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Therefore,

5.2 × 10⁻³ ppm × 10³ = 5.2 ppb

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1 month ago

What is the pressure in atm exerted by 2.48 moles of a gas in a 250.0 mL container at 58 degrees celsius

Dvinal [7]

Since the question manages to include moles, pressure, volume, and temperature, then it is evident that in order to find the answer we will have to use the Ideal Gas Equation: PV = nRT (where P = pressure; V = volume; n = number of moles; R = the Universal Constant [0.082 L·atm/mol·K]; and temperature.

First, in order to work out the questions, there is a need to convert the volume to Litres and the temperature to Kelvin based on the equation:
250 mL = 0.250 L
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Also, based on the equation P = nRT ÷ V

⇒ P = (2.48 mol)(0.082 L · atm/mol · K)(331 K) ÷ 0.250 L
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2 years ago

The decomposition of dinitrogen pentoxide, N2O5, to NO2 and O2 is a first-order reaction. At 60°C, the rate constant is 2.8 × 10

Sati [7]

Answer:

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