2 years ago

Which of the following identifies the number and location of protons in a lithium atom

Chemistry

1 answer:

bezimeni [28]2 years ago

6 0

The number of protons is the atomic number

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How many moles of potassium are contained in 449 g of<br> potassium?<br> pls help im so lost

e-lub [12.9K]

Answer:

449 (g K) / 39.1 (g/mol K) = 11.5 mol K

Explanation:

Potassium has atomic number 39.1

amount of K in 449g sample = 449/39.1 = 11.5 mol

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3 years ago

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What is the pressure exerted by a 0.500 mol sample of nitrogen in a 10.0 L container at 20°C?

lidiya [134]

The answer would be D.120 kPa

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3 years ago

What is 0.00034 in exponential form

Verizon [17]

Answer:

3.4 × 10 ^− 4

Explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

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2 years ago

According to the second law of thermodynamics, energy tends to become more spread out. True or False?

chubhunter [2.5K]

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3 years ago

Draw a bond-line structure for CH3CH2O(CH2)2CH(CH3)2.<br><br> Include Lone Pairs in your answer.

mash [69]

Answer:

See explanation and image attached

Explanation:

A bond line structure refers to any structure of a covalent molecule wherein the covalent bonds present in the molecule are represented with a single line for each level of bond order.

The bond-line structure of CH3CH2O(CH2)2CH(CH3)2 has been shown in the image attached. We know that oxygen has a lone pair of electrons and this has been clearly shown also in the image attached.

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3 years ago