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densk [106]
3 years ago
13

Which of the following statements incorrectly describes the assumptions of the kinetic molecular theory? Group of answer choices

The particles that make up a substance have differing amounts of kinetic energy. Matter is composed of very small particles. Based on the state of matter a substance is in, it has varying particle arrangement. Particles stop moving completely when they are very cold.
Chemistry
1 answer:
Flauer [41]3 years ago
7 0
Sorry
J vre fdtnyscdvf. H Fr,I
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All of these properties are for alkali metals except one
Neko [114]
The answer is high melting and boiling points. Because alkali metals have a range of melting points from a high of 179 °C (354 °F) for lithium to a low of 28.5 °C (83.3 °F) for cesium
4 0
2 years ago
Please help with my chemistry! PLEASE
Dahasolnce [82]

Answer:

b.

Explanation:

Americium decays to neptunium 237.

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2 years ago
What happens when an electron moves to a higher energy level? (4.1.4 Quantization)
ale4655 [162]

Answer:

it gains energy in a quantized amount

Explanation:

when we describe the energy of a particle as a quantized ,we mean that only certain values of energy are allowed....it can only gain the exact amount of energy needed to reach one of the higher energy levels

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3 years ago
According to Ohm’s law, if V is voltage, I is current, and R is resistance, their relationship is expressed by the equation
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6 0
3 years ago
Melatonin has the chemical formula C13H16N2O2. Less than 10 milligrams(0.01g) Convert the melatonin to moles
oee [108]

Answer: There are 0.000043 moles of melatonin.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

given mass = 10 mg = 0.01 g

molar mass of C_{13}H_{16}N_2O_2 = 232.28 g

{\text {moles of melatonin}}=\frac{0.01g}{232.28g/mol}=0.000043moles

Thus there are 0.000043 moles of melatonin

6 0
3 years ago
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