A student added 3 g of melted wax to a container that weighed 15 g. What is the weight of the container after the wax hardens?

Chemistry

1 answer:

koban [17]8 months ago

6 0

The weight of the container after the wax hardens is 0.18 N.

<h3>What is the law of conservation of mass?</h3>

We know that according to the law of the conservation of mass, the mass of an object can neither be created nor destroyed but it can be changed from one form to the other.

Looking at this law, we know that the mass would not change even after the time that the wax must have hardened. The total mass of the wax would have to be a constant.

Total mass would now be;

Mass of the wax + mass of the container

= 3 g + 15 g

= 18 g

Weight = 18/1000 * 9.8 m/s^2

= 0.18 N

Learn more about mass:brainly.com/question/13383562

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2 years ago

Consider the given acid ionization constants. identify the strongest conjugate base.

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The question is incomplete. Complete question is:
<span>Consider the given acid ionization constants. identify the strongest conjugate base.
</span>HNO2(aq) 4.6×10−4
HCHO2(aq) 1.8×10−4
HClO(aq) 2.9×10−8
HCN(aq) 4.9×10−10
.........................................................................................................................
Correct Answer: option 4: HCN(aq) 4.9×10−10

Reason:
According to Lowry and Bronsted theory of acid and base. Stronger the acid, weaker will be the conjugate base.

In present case, ionization constant is highest of HCN i.e. 4.9× $10^{-10}$ . This signifies that, it is the strongest acid. Hence, conjugate base associated with this acid (i.e. $CN^{-}$ ) is the weakest.