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3 years ago

ILL MARK BRAINLIST AND TAKE AS MUCH TIME AS YOU NEED

Chemistry

2 answers:

LekaFEV [45]3 years ago

8 0

Answer:

What is energy transformation? One type of energy can change into another type of energy. Energy transformation means the changing of energy from one type to another, e.g. from kinetic energy to electrical energy, or from potential energy to kinetic energy.

Explanation:

Anna007 [38]3 years ago

4 0

Answer:

Fr fed vice cxy vacgsxzxv cv tzxvtvzvdsf dogs gsx gas g ds dsc dsv sv dsvg xs fsvds d d csgdf cfsxv scvsdvcsdhgcvcvdcvs

Explanation:

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For a reaction Y → X with a very high equilibrium constant, K, which of the following is true? You can refer to the following tw

Dafna11 [192]

Answer:The amount of product will be higher than the amount of substrate at equilibrium

Explanation:

Recall that the equilibrium constant K depends on the amounts of reactants and products present in the system at equilibrium.

Considering the equation; K = [X]/[Y], as the concentration of X increases above that of Y, the equilibrium constant K becomes very high, hence the answer above.

8 0

3 years ago

Which one accelerates more if the same amount of force is used? <br>

jonny [76]

Two objects are dropped from a height of 100 m.
If one object is heavier than the
other object, which of the following is true?
(Note: ignore air resistance)
(a) The heavier object will experience equal force
and accelerate more slowly.
(b) The heavier object will experience more force
and accelerate more quickly
(c) The heavier object will experience equal force
and accelerate at the same rate
(d) The heavier object will experience more force
and accelerate at the same rate

3 0

2 years ago

Explain why calcium metal after reacting with water starts floating on its surface. Write the chemical equation for this reactio

Oksanka [162]

Firstly, the chemical equation between the calcium metal and water will be:

Ca(s) + 2 H₂O(l) → Ca(OH)₂(aq) + H₂(g)

We can see from the equation the bubbles of hydrogen gas which are formed during the reaction stick to the surface of the metal and hence calcium floats on water.

The other metal that will float on the water during the reaction is magnesium which have the same chemical behavior like calcium, we can illustrate that by the chemical equation:

Mg(s) + 2 H₂O(l) → Mg(OH)₂(aq) + H₂(g)

3 0

3 years ago

Calculate the mass of ammonia (NH3) that contains a billion (1.00 * 10^12) hydrogen atoms.

Lynna [10]

Answer:

The mass of ammonia (NH3) that contains $1.00 \times 10^12$ hydrogen atoms is $9.4\times 10^{-12}$ g.

Explanation:

As $6.022\times 10^{23}$ atoms of hydrogen = 1 mole of the hydrogen atom

Therefore, $10^{12}$ atoms of hydrogen $= \frac{1}{6.022 \times 10^{23}}\times 10^{12}=1.66\times 10^{-12}$ moles of the hydrogen atom.

Now, there are 3 moles of hydrogen atoms in 1 mole of ammonia $(NH_3)$ .

As the mass of 1 mole of ammonia is 17g, so

when there are 3 moles of hydrogen atoms, then the mass of ammonia = 17 g

Therefore, when there are $1.66\times 10^{-12}$ moles of hydrogen atoms, then the mass of ammonia $= \frac{17}{3}\times 1.66\times 10^{-12}=9.4\times 10^{-12$ g.

Hence, the mass of ammonia $(NH_3)$ that contains $1.00 \times 10^12$ hydrogen atoms is $9.4\times 10^{-12}$ g.

3 0

3 years ago

Bomb calorimeters are often used to determine the amount of energy stored in foods. You can find the molar enthalpy of combustio

marta [7]

Butter is made of milk, which is made of several things. To do calculations with bomb calorimetry, we often need the number of moles of the substance that we’re using. Since we can’t just say “moles of milk”, it’s not on a table.

7 0

2 years ago