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lions [1.4K]
3 years ago
5

How does heat get from the stove burner into your soup?

Chemistry
1 answer:
Vladimir [108]3 years ago
3 0

Answer:

hey. I remember learning about this and asking my teacher why the heck would you think about all that instead of just eating the food XD.....

but the Heat from the burner warms the pan by conduction. The liquid soup is warmed by convection currents. ... Metal is a good conductor of heat. Theheat energy moves from the hot liquid through the spoon by conduction.

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You are given 100 g of a compound. The compound is composed of 37% hydrogen and 63% oxygen. How many grams of hydrogen are prese
Reil [10]
B is the best answer
4 0
2 years ago
One liter of a solution ph 9 has how many more hydroxide ions (oh-) than 1 l of a solution of ph 4?
NeX [460]
<span>100,000 times more. The rule is that the product of the concentration of (H+) and (OH-) in molars is always 10^-14 (if it is more, they combine and produce simple water which brings the product back down to this number again. If it is less, water molecules will split to bring the product back up to equilibrium).
pH 9 means (H+) is 10^-9 molar. But that means (OH-) is 10^-5 at the same time.
pH 4 means (H+) is 10^-4 molar. But that means (OH-) is 10^-10 at the same time.
10^-5 / 10^-10 = 10^5 or 100,000 times more.</span>
4 0
3 years ago
Write balanced complete ionic equation for K2SO4(aq)+CaI2(aq)→CaSO4(s)+KI(aq)
dangina [55]
K₂SO₄ + CaI₂ → CaSO₄ + KI

  K: 2                    K: 1
  S: 1                    S: 1
  O: 4                   O: 4
Ca: 1                  Ca: 1
    I: 2                     I: 1
                   ↓
K₂SO₄ + CaI₂ → CaSO₄ + 2KI

  K: 2                   K: 2
  S: 1                   S: 1
  O: 4                  O: 4
Ca: 1                 Ca: 1
    I: 2                    I: 2
4 0
2 years ago
Mr. Avogadro has 20 grams of radioactive Pa-234. How many atoms of Pa-234 does Mr. Avogadro have? PLEASE HELP WILL MARK BRAINLIE
jolli1 [7]

Answer:

The number of atoms in 20 grams of Pa-234 is 5.14 ×10²² atoms

Explanation:

Given that the molar mass of Pa-234 (protactinium) is 234.04331, we have

The number of moles of protactinium in 20 grams of Pa-234, we have

Number of moles = Mass/(Molar mass) = 20/234.04331 = 0.0855 moles

One mole of Pa-234 contains 6.02×10²³ atoms, therefore, we have;

0.0855 moles of Pa-234 contains 0.0855× 6.02×10²³  = 5.14 ×10²² atoms

Therefore, the number of atoms in 20 grams of Pa-234 = 5.14 ×10²² atoms.

6 0
3 years ago
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Explain why hydrogen and oxygen are considered elements whereas water is not considered an element.
Ghella [55]
Elements are the simplest building blocks you can break matter down into using purely chemical methods. They are a pure substance made up from only one type of atom.

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As such Hydrogen or Oxygen cannot be simplified chemically (they are therefore elements), however dihydrogen monoxide (H2O or water) is a mixture of these elements that can be broken down using chemical means and so is a compound.
5 0
3 years ago
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