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Alex
3 years ago
12

What numbers indicate an acid?

Chemistry
2 answers:
nikdorinn [45]3 years ago
5 0
Any pH level of 1-6 would be considered an acid. If the pH level is 7 it would be neutral, then anything above a level of 7 would be a base.
Vlad [161]3 years ago
3 0
The answers that indicate acids are 1--6.9
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What was the scientific basis for the unit amu
Naya [18.7K]
Natural abundance of oxygen I think
4 0
3 years ago
g aqueous barium hydroxide (ba(oh)2) and nitric acid (hno3) participate in a complete neutralization reaction. in the molecular
Whitepunk [10]

Answer:

Where the products are H2O and Ba(NO3)2

Explanation:

A base, as, barium hydroxide (Ba(OH)2) reacts with an acid (HNO3), producing water (H2O), and the related salt (Ba(NO3)2) in a reaction called <em>neutralization reaction.</em>

The balanced reaction is:

Ba(OH)2 + 2 HNO3 → 2 H2O + Ba(NO3)2

<em>Where the products are H2O and Ba(NO3)2</em>

4 0
3 years ago
A 1.40-L gaseous system absorbs 75 J of heat and expands its volume to 2.00 L against an external pressure of 1.02 atm. What is
kramer

Answer:

15.24 J is the change in internal energy for this process.

Explanation:

According to the first law of thermodynamics:-

\Delta U = q + w

Where,  

U is the internal energy

q is the heat

w is the work done

From the question,

q = + 75 J

(+ sign as the heat is being absorbed)

The expression for the calculation of work done is shown below as:

w=-P\times \Delta V

Where, P is the pressure

\Delta V is the change in volume

From the question,  

\Delta V = 2.00 - 1.40 L = 0.60 L

P = 1.02 atm

w=-1.02\times0.60\ atmL

Also, 1 atmL = 101.3 J

So,  

w=-1.02\times0.60\times 101.3\ J=-59.76\ J (work is done by the system)

So,

\Delta U = +75\ J-59.76\ J = 15.24\ J

<u>15.24 J is the change in internal energy for this process.</u>

6 0
3 years ago
Which of the following would most likely happen if average global temperatures on Earth increased?​
iragen [17]

Answer:

D. severe weather events would occur more often

Explanation:

If the average global temperatures on Earth increased, there are high chances of severe weather events occurring more often

  • Weather events are devastating in nature.
  • Examples are hail, blizzards, Lightning and thunderstorm

Increase in average global temperatures can result in these disasters.

When global temperatures increases, polar ice will melt and sea levels will increase.

This will cause storms in coastal areas and flooding.

3 0
3 years ago
PLEASE ANSWERRRRRRRRR
Alex

Answer:

D

Explanation:

gravitational force: F=GmM/r^2

so this equation tells you that when mass increases force increases and when the distance increases force decreases

since the mass of the objects is the same in both cases, but distance is greater in case B than case A, case B has a smaller attractive force compared to A

6 0
3 years ago
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