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Bad White [126]
3 years ago
13

Seven cups of instant coffee contain 315 mg of caffeine.

Biology
2 answers:
lawyer [7]3 years ago
6 0
315 divided by 7= 45. So one cup contains 45 mg of caffeine
larisa86 [58]3 years ago
3 0

Answer:

45 mg of caffeine in one cup of instant coffee.

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Give three examples of the color changes that can be seen with pH indicators.
Andru [333]

Answer:

IndicatorLow pH colorHigh pH colorBromocresol greenyellowblueMethyl redredyellowMethyl purplepurplegreenAzolitmin (litmus)redblue

3 0
2 years ago
What is the connection between the rising concentration of SO2 And NO2x , And The Acid Rain Pollution Alert?
sweet-ann [11.9K]

Answer:

Acid rain refers to the rain which acidic in nature having a form of precipitation and elevated levels of hydrogen ions (low pH). The normal pH of rain is around 5.6

Rising concentration of Sulfur dioxide (SO2) and nitrogen oxides (NOx) in atmosphere is one of the cause of acid rain. Sulfur dioxide (SO2) and nitrogen oxides (NOx) are released by vehicles, fossil-fuel power plants and oil refineries.

When a sulfur dioxide and nitrogen oxides released in air they mix with oxygen, water and other chemicals in the air and form sulfuric and nitric acids. sulfuric and nitric acids mix with precipitation and its pH level is about 5.2 or below.

Hence, rising concentration of SO2 And NO2x is one of the biggest reason of acid which damages agriculture, buildings and wildlife et-cetra.

5 0
3 years ago
How many water molecules are needed to degrade a protein that contains 250 amino acids?
alex41 [277]

Answer:

125 molecules

Explanation:

Between two amino acids , one water molecule is eliminated and a peptide bond is formed. When 250 amino acids are joined to form a polypeptide , 125 molecules of water will be removed.

That is, 250/2=125

7 0
3 years ago
Explain the importance of scientific names.
prohojiy [21]

Answer:

Every recognized species on earth (at least in theory) is given a two-part scientific name. This system is called "binomial nomenclature." These names are important because they allow people throughout the world to communicate unambiguously about animal species.

3 0
2 years ago
The relative location of four genes on a chromosome can be mapped from the following data on crossover frequencies Genes B and D
kykrilka [37]

Answer:

3. CABD

Explanation:

The gene mapping refers to providing position to the genes on the chromosomes.  The first gene map was constructed by the Alfred Sturtevant on the basis of recombinant produces or recombination frequency which was calculated.

The gene mapping refers to providing position to the genes on the chromosomes.

In the given question to construct gene map:

1. Look for the highest recombination frequency that is 50% between the C and D.

2. Now look for second-highest value and place the gene accordingly.

3.Similarly, place the genes in the decreasing order of recombination frequency and this will result that the sequence of the genes is- CABD.

Thus, Option-3 is correct.

5 0
3 years ago
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