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miss Akunina [59]
3 years ago
5

Why is it important in an ideal simple experiment to change only one variable from trial to trial?

Chemistry
1 answer:
artcher [175]3 years ago
6 0
By changing only one variable in an experiment, and holding all other factors exactly the same, any change in the result of the experiment can be more likely attributed to the changed variable. This increases the validity of the experiment.

If you like my answer, please vote me a 'brainliest'; I'm trying to improve my site stats :-)
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Perform the following operation and express the answer in scienfific notation 7.5x10 ^9 - 2.5 x 10^8
ycow [4]

The answer is in scientific notation 34^67 42’063 1220.

The correct form for scientific notation is a x 10^b. where a is a number or decimal such that the absolute value of a is greater than or equal to 1 and less than 10, or 1 ≤ |a|. < 10. b is the power of 10 required to make the scientific notation mathematically equivalent to the original number.

To write this number in scientific notation, you must first shift the number of decimal places from the original number by 4 places between 4 and 2. We're subtracting from the exponent because we're shifting the decimal four places to the right.

Learn more about scientific notation at

brainly.com/question/5756316

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5 0
1 year ago
How many Oxygen atoms are in 2NA(OH)3
Dmitry [639]

Answer:

3 oxygen atom

hope it helps.

4 0
3 years ago
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If 75.6 grams of iron has a Volume of 250 ml. What is the density of Iron?
Sonja [21]

Answer:yea

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Explanation:

4 0
3 years ago
Confused on this question
kotegsom [21]

Answer:

The second option

Explanation:

Check

2×2Fe = 4Fe. Both sides have 4 Fe's

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3 0
3 years ago
A solid ball has a density of 2.5 g/cm and a volume of 20 cm3. What is the
Svetach [21]

Answer:

50 g

Explanation:

d= m/v

rearranging the above equation

m = d x v

m = 2.5 g x 20 g/cm3

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7 0
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