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Oliga [24]
3 years ago
15

2-8-6 refers to the proton configuration for sulfur. True Or False

Chemistry
2 answers:
olganol [36]3 years ago
6 0

Answer: its true

Explanation:

Sergio039 [100]3 years ago
4 0

Answer:

The answer is true I believe

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In Scratch, when making the jump command for a sprite to jump if the space bar is pressed, you place the command outside the hex
Rzqust [24]

Answer:

that would be true you place it outside the hexagon

Explanation:

6 0
2 years ago
What type of charges do nonmetals develop in ionic compounds?
Mazyrski [523]

positive is the answer


8 0
3 years ago
Potassium-40 is a radioactive isotope that decays into a single argon-40 atom and other particles with a half-life of 1:25 billi
stiks02 [169]

Answer:

0.147 billion years = 147.35 million years.

Explanation:

  • It is known that the decay of a radioactive isotope isotope obeys first order kinetics.
  • Half-life time is the time needed for the reactants to be in its half concentration.
  • If reactant has initial concentration [A₀], after half-life time its concentration will be ([A₀]/2).
  • Also, it is clear that in first order decay the half-life time is independent of the initial concentration.
  • The half-life of Potassium-40 is 1.25 billion years.

  • For, first order reactions:

<em>k = ln(2)/(t1/2) = 0.693/(t1/2).</em>

Where, k is the rate constant of the reaction.

t1/2 is the half-life of the reaction.

∴ k =0.693/(t1/2) = 0.693/(1.25 billion years) = 0.8 billion year⁻¹.

  • Also, we have the integral law of first order reaction:

<em>kt = ln([A₀]/[A]),</em>

<em></em>

where, k is the rate constant of the reaction (k = 0.8 billion year⁻¹).

t is the time of the reaction (t = ??? year).

[A₀] is the initial concentration of (Potassium-40) ([A₀] = 100%).

[A] is the remaining concentration of (Potassium-40) ([A] = 88.88%).

  • At the time needed to be determined:

<em>8 times as many potassium-40 atoms as argon-40 atoms. Assume the argon-40 only comes from radioactive decay.</em>

  • If we start with 100% Potassium-40:

∴ The remaining concentration of Potassium-40 ([A] = 88.88%).

and that of argon-40 produced from potassium-40 decayed = 11.11%.

  • That the ratio of (remaining Potassium-40) to (argon-40 produced from potassium-40 decayed) is (8: 1).

∴ t = (1/k) ln([A₀]/[A]) = (1/0.8 billion year⁻¹) ln(100%/88.88%) = 0.147 billion years = 147.35 million years.

8 0
3 years ago
What is your weight a measure of
Ne4ueva [31]
Your weight is a measure of ibs/pounds
8 0
3 years ago
Do humans depend on photosynthesis? Explain how, why, or why not. (1 point)
Bond [772]

Answer:

Third option

Explanation:

The answer is the third option or "Yes, all of the food consumed by humans is plants or gets energy from plants, and plants produce their own food through photosynthesis." Photosynthesis is the process plants use to obtain their own food. Humans do depend on photosynthesis because not only humans eat plants, but animals. Some animals are herbivores which means they only eat plants. If plants cannot create their own food using photosynthesis, then the plant dies. Neither the human nor the animal can eat that plant.

Many animals rely on plants to eat and if all plants cannot perform photosynthesis, then the animals cannot eat. Us humans eat animals which means if the plants die, the animals who eat the plants die, and then humans die. Humans heavily rely on photosynthesis, so the answer is the third option.

Hope this helps.

6 0
2 years ago
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