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SVETLANKA909090 [29]
2 years ago
15

2022

Chemistry
1 answer:
Lapatulllka [165]2 years ago
8 0

Answer:

OOO

Explanation:

OOOOOO

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Select the pair that consists of a base and its conjugate acid in that order. CO32−/CO22−
lana [24]

Answer: The pair that consists of a base and its conjugate acid in that order.NH_3/NH_4^+

Explanation:

According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.

H_3PO_4\rightarrow H_PO_4{2^-}+2H^+

H_2CO_3\rightarrow HCO_3^-+H^+

NH_3+H^+\rightarrow NH_4^+

HCO_3^-\rightarrow CO_3^{2-}+H^+

NH_3  is gaining a proton, thus it is considered as a brønsted-lowry base and after gaining a proton, it formsNH_4^+  which is a conjugate acid.

3 0
3 years ago
1. The elements on the Periodic Table are arranged in order of increasing
s344n2d4d5 [400]

Answer:

Atomic number

Explanation:

8 0
2 years ago
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What is the main cause of increased erosion
anyanavicka [17]
The main cause of increased erosion is natural elements like rain, wind and ice. Erosion is the process by which the surface of the Earth gets worn down. 
Soil erosion is also a big thing, it is caused by mostly rain that contributes to floods. This stuff is bad for farmers because they do a lot of farming and with erosion increasing the growing crops are decreasing because of erosion. 
6 0
3 years ago
What refers to the effect of gravity
Grace [21]

Answer: D

Explanation:

Weight by definition is mass multiplied by the acceleration of gravity. So, weight is the force of gravity

4 0
2 years ago
2. A lab group turned in their experiment and had measured the mass of their sample
alisha [4.7K]

Answer:

1.61%.

Explanation:

The following data were obtained from the question:

Measured mass = 3.15 g.

Actual mass = 3.10 g

Percentage error =.?

The percentage error of the group can be obtained by using the following equation below:

Percentage error = |Actual mass – Measured mass| / Actual mass × 100

Percentage error = |3.10 – 3.15| /3.10 × 100

Percentage error = 0.05/3.1 × 100

Percentage error = 5/3.1

Percentage error = 1.61%

Therefore, the percentage error of the group is 1.61%.

3 0
3 years ago
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