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Gnesinka [82]
3 years ago
7

A solution has a pH of 2. Which best describes the solution?

Biology
2 answers:
natima [27]3 years ago
8 0

Answer:

Explanation:

pH 2 is very acidic. That is pretty near the pH of Lemon Juice. Low pHs under 7 are very acidic. The further you go from 7 downwards, the more acidic the substance.

A car battery has a pH of -0.7 which is under 1 or even 0.  There are not that many substances around with that low a Ph.

Rudiy273 years ago
3 0

Answer:

A Strong Acid

Explanation:

Anything below 7 is acidic, and anything above 7 is basic. 7 itself is a neutral solution. Each level you go down is 10 times more acidic than the one above.

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How we can increase the fertile land? ​
Elena L [17]

Answer:

Add Compost. Compost is decomposed organic matter, and it is the best thing you use to improve the health of garden soil.

Get a Soil Test.

Mulch the Soil Surface.

Prevent Soil Compaction.

Rotate Crops Each Year.

Grow Cover Crops.

Add Aged Animal Manure.

Explanation: Soil fertility is the ability of soil to sustain plant growth and optimize crop yield. This can be enhanced through organic and inorganic fertilizers to the soil. Nuclear techniques provide data that enhances soil fertility and crop production while minimizing the environmental impact.

4 0
3 years ago
For a particular species of snap beans, the mean germination period has been 17 days. A new species of snap beans has been devel
DaniilM [7]

Answer:

(a) H0: mu = 17 vs. Ha: mu < 17

(b) Sample statistic is 1.6

Explanation:

(a) A null hypothesis is a statement from a population parameter which is either rejected or accepted (fail to reject) the upon testing. It is expressed using the equality sign.

An alternate hypothesis is also a statement from a population parameter which negates the null hypothesis and is accepted if the null hypothesis is rejected. It is expressed using any of the inequality signs.

(b) Sample statistic = sample mean ÷ sample size = 16 ÷ 10 = 1.6

5 0
3 years ago
A hand sanitizer was advertised to be more effective at killing bacteria than any antibacterial soap. Students were split evenly
nika2105 [10]

Answer:

Group 4

Explanation:

The control group in this case would be those students in group 4.

<u>The control group during an experiment is a group that does not receive the treatment administered to other groups and as such used as a standard for measuring the effects of the treatment on other groups. </u>Whatever differences that exist between the control group and the various treatment groups is attributed to be as a result of the treatment administered to the groups.

In this case, group 4 only used warm water for washing their hands instead of the hand sanitizer/soap used by the other groups. Whatever differences found out in the bacterial count in their respective culture swabs can be attributed to the effects of the hand sanitizer/soap.

5 0
3 years ago
A closed metal container that is filled with hot water gets distorted or compressed when it is kept under the tap water. Why?
tino4ka555 [31]

Answer:

Explanation:

The closed metal container will get distorted or compressed due to a combination of two reasons:

1.<em> contraction of the metal container as a result of a reduction in its temperature.</em>

2. <em>a reduction in the pressure inside the container caused by a sudden drop in the temperature of the water inside it. </em>

The tap water causes a reduction in the temperature of both the container and the water inside it. An increase in temperature causes metal to expand and a reduction in temperature causes it to contract. Also, water takes less space than steam. Therefore, a reduction in the temperature of the hot water causes a reduction in the pressure inside the container relative to the outside. This causes the metal container to be compressed.

8 0
3 years ago
To develop a standard or​ benchmark, firms need to start with
natima [27]
To develop a standard or​ benchmark, firms need to start with <span>determining what to benchmark.</span>
8 0
4 years ago
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