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DiKsa [7]
3 years ago
12

Ivan wants to test how the amount of water consumed each day affects the number of facial blemishes people receive over a month.

He gathers 12 people and divides them into 3 groups. He keeps everything the same for each group except for daily water and food intake. Throughout the month, Ivan tallies the number of facial blemishes each individual receives. The table details how Ivan changed the independent variables for each group. Note: Group 1 is Ivan's control group. What error did Ivan make in the design of his inves
Chemistry
2 answers:
german3 years ago
7 0
He didn’t keep food intake the same which is important because diet can effect skin problem
Viktor [21]3 years ago
6 0
Some people naturally have more or less blemishes than others because of genes
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Perform the following operationand express the answer inscientific notation.7.00x10^5 - 5.00x10^4
11Alexandr11 [23.1K]

Taking into account the scientific notation,  the result of the subtraction is 6.5×10⁵.

<h3>Scientific notation</h3>

First, remember that scientific notation is a quick way to represent a number using powers of base ten.

The numbers are written as a product:

a×10ⁿ

where:

  • a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.
  • n is an integer, which is called an exponent or an order of magnitude. Represents the number of times the comma is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.
<h3 /><h3>Subtraction in scientific notation</h3>

You want to subtract two numbers in scientific notation. It should be noted that when the numbers to be added do not have the same base 10 exponent, the base 10 power with the highest exponent must be found. In this case, the highest exponent is 5.

Then all the values ​​are expressed as a function of the base 10 exponent with the highest exponent. In this case: 5.00×10⁴=0.500×10⁵

Taking the quantities to the same exponent, all you have to do is subtract what was previously called the number "a". In this case:

7.00×10⁵ - 0.500×10⁵= (7.00- 0.500)×10⁵= 6.5×10⁵

Finally, the result of the subtraction is 6.5×10⁵.

Learn more about scientific notation:

brainly.com/question/11403716

brainly.com/question/853571

#SPJ1

3 0
2 years ago
Starch is a type of: Protein Fat Nucleic acid Sugar
Svetllana [295]

Answer:

it's not a protien at all

Explanation:

Starch is not a protein. Starch is a type of carbohydrate. It is a polysaccharide, it has lots of sugars though

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skad [1K]
The answer for your question is B
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cluponka [151]

Answer:

Iodine (I2) has the longest bond length because the radius of the I atom is greater that the radii of the other halogen atoms.

Explanation:

here

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