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3 years ago

The rate of reaction (reaction rate) is the

1 answer:

3 0

Sugar dissolves faster in a warm liquid than in a cold liquid – this is an example of how temperature influences the reaction rate....

Yes it is. Another example is surface area of reactants, powdered iron fillings would react faster in HCl than iron lumps.

Also your beverage would also dissolve faster in hot water than in cold water, this is also an example of how temperature affects rate of reaction.

There are other examples that can be stated as well.

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8. What is probability?

nata0808 [166]

Answer:

In equipment reliability, the likelihood that a given event will occur

Explanation:

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3 years ago

What is a non-example for an Electric circuit?

Mademuasel [1]

Answer:

Impressionist paintings are a non-example of electric circuits.

Explanation:

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4 0

3 years ago

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How could measuring the melting point of a solid help decide whether it was a mixture or a compound?

mars1129 [50]

Answer: It can't.

Explanation:

In most cases, the melting point alone will not enable you to identify a compound. Millions of solid organic compounds, and their melting points, are known. Perhaps 10,000 of these will have the same melting point as your unknown compound.

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8 0

3 years ago

When methanol, CH 3 OH , is burned in the presence of oxygen gas, O 2 , a large amount of heat energy is released. For this reas

luda_lava [24]

Answer: The mass of methanol that must be burned is 24.34 grams

Explanation:

We are given:

Amount of heat produced = 581 kJ

For the given chemical equation:

$CH_3OH(g)+\frac{3}{2}O_2(g)\rightarrow CO_2(g)+2H_2O(l);\Delta H=-764kJ$

By Stoichiometry of the reaction:

When 764 kJ of heat is produced, the amount of methanol reacted is 1 mole

So, when 581 kJ of heat will be produced, the amount of methanol reacted will be = $\frac{1}{764}\times 581=0.7605mol$

To calculate mass for given number of moles, we use the equation:

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

Moles of methanol = 0.7605 moles

Molar mass of methanol = 32 g/mol

Putting values in above equation, we get:

$0.7605mol=\frac{\text{Mass of methanol}}{32g/mol}\\\\\text{Mass of methanol}=(0.7605mol\times 32g/mol)=24.34g$

Hence, the mass of methanol that must be burned is 24.34 grams

4 0

3 years ago

Which of the following distinguishes a nuclear reaction from a chemical reaction? a.It involves atoms.

MissTica

The option that distinguishes a nuclear reaction from a chemical reaction is D. there is a change in the nucleus.
During a nuclear reaction, two light nuclei combine in order to create a new, heavier one which is different than those two original ones and has additional particles that it didn't have originally. This is what makes the difference between these two reactions.

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3 years ago

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