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Vsevolod [243]
3 years ago
5

Which of the following statements is true?

Chemistry
1 answer:
EastWind [94]3 years ago
5 0
The first statement is False... as
For exothermic reaction :
A+B》 C+D + HEAT..(heat is considered as a product)... as for endo.. heat is a reactant.
So tjey can't be of the same energy...

2nd one...based on the
A+B》 C+D+HEAT...For exo reaction... the product have more Heat energy than potential...so its false
Recall...energy can nither be created nor destroyed but converted from one form to another....

The 4th one however is true for heat...the reactants have nore energy than the products..
A+B+HEAT》C+D
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According to Arrhenius, NH4+ an acid or a base? Write an equation to support
sergejj [24]

According to Arrhenius definition of acids, NH4^+ is an acid.

According  to Arrhenius  definition of acids and bases, acid is any substance that produces hydrogen ion in solution as its only positive ion.

Following this definition, let us now consider what happens when NH4^+ is introduced into a water;

NH4^+(aq)-------> NH3(aq) + H^+(aq)

Hence, according to Arrhenius definition of acids, NH4^+ is an acid.

For another example of Arrhenius acids, see

brainly.com/question/516295

8 0
3 years ago
The temperature of a container of oxygen gas is increased from 149 k to 298 k which of the following statement is true
ozzi

Answer:

______is used in production of hard disk.

Explanation:

8 0
3 years ago
When 2-bromo-2-methylbutane is treated with a base, a mixture of 2-methyl-2-butene and 2-methyl-1-butene is produced. When potas
rjkz [21]

Answer:

The percentage mixture of 2-methyl-1-butene would be in between the 45% and 70%.

Explanation:

Potassium prop oxide is the intermediate base as compared to the potassium hydroxide which is less bulky strong base and potassium tert-butoxide which is bulky base. Bulky base can minimize the substitution reaction by causing hinders the approach of carbon attack and KOH is the strong base which less effective in minimizing the substitution reaction.

8 0
3 years ago
What happens to the atoms in food once animals eat them?
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Answer:

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8 0
2 years ago
What is the volume of an object with a mass of 31g and density of 444g/ml​
Tanzania [10]

Answer:

<h2>The answer is 0.07 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density} \\

From the question

mass = 31 g

density = 444 g/mL

We have

volume =  \frac{31}{444}   \\  = 0.06981...

We have the final answer as

<h3>0.07 mL</h3>

Hope this helps you

5 0
3 years ago
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