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3 years ago

Which type of science studies how substances change?

Chemistry

1 answer:

Fittoniya [83]3 years ago

6 0

Chemistry is the only type of science that studies how substances change.

Hope this helps you :)

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How is the periodic table used to predict the properties of an element?

Novosadov [1.4K]

There are many ways to predict the properties of an element here's one example.As you move from left to right the electron affinity and ionization energy both increase .Since elements of the same family have similar characteristic,you can often predict the properties of another element in its family

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4 years ago

Of the following solutions, which has the greatest buffering capacity?

Goshia [24]

Answer:

d. 0.121 M HC2H3O2 and 0.116 M NaC2H3O2

Explanation:

Hello,

In this case, since the pH variation is analyzed via the Henderson-Hasselbach equation:

$pH=pKa+log(\frac{[Base]}{[Acid]} )$

We can infer that the nearer to 1 the ratio of of the concentration of the base to the concentration of the acid the better the buffering capacity. In such a way, since the sodium acetate is acting as the base and the acetic acid as the acid, we have:

a. $\frac{[Base]}{[Acid]}=\frac{0.497M}{0.365M}=1.36$

b. $\frac{[Base]}{[Acid]}=\frac{0.217M}{0.521M}=0.417$

c. $\frac{[Base]}{[Acid]}=\frac{0.713M}{0.821M}=0.868$

d. $\frac{[Base]}{[Acid]}=\frac{0.116M}{0.121M}=0.959$

Therefore, the d. solution has the best buffering capacity.

Regards.

4 0

3 years ago

In scientific notation, 213,000 is equal to

kirza4 [7]

2.13 x 10^5 I think.

5 0

3 years ago

Read 2 more answers

The truck is going to be packed with washing machines. These measure 5 ft. by 5 ft. by 6 ft. How many washing machines can fit i

Sindrei [870]

how much space does the truck have

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3 years ago

DNA has 2 strands. if the sequence of nucleotides of one strand was known, is it possible to use the information to determine th

ANTONII [103]

DNA has four main components.
Adenine=A
Cytosine=C
Guanine=G
Thymine=T

Since each letter has an opposite it would be possible by considering the pairs.
A:T
C:G

So, if one strand went as so:
AGCCTAGGTAC
The corresponding strand would be mirrored with the match: TCGGATCCTG

3 0

3 years ago