37 Answered Questions for the topic Significant Figures

01/29/21

#### Carry out the following calculation, making sure that your answer has the correct number of significant figures:

7.80 g divided by 15.9 g minus 8.37 g

01/29/21

#### A cylindrical tube 14.7 cm high and 1.60 cm in diameter is used to collect blood samples. How many cubic decimeters (dm3) of blood can it hold (V of a cylinder = πr2h)?

Give your answer to the correct number of significant figures. The answer is blank dm3Not scientific notation.

01/29/21

#### Convert the following into correct scientific notation:

I got the numbers right, but not the correct powers.a) 445.5 X 104 I got 4.455 X 10 to the? It is not power 4 and it is not power 2b) 7804.7 X 10-6 I got 7.8047 X 10 to the? It is not power -6 and...
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#### Carry out the following calculation, making sure that your answer has the correct number of significant figures:

7.80 g divided by 15.9 g minus 8.37 g

#### A cylindrical tube 10.9 cm high and 2.20 cm in diameter is used to collect blood samples. How many cubic decimeters (dm3) of blood can it hold (V of a cylinder = πr2h)?

Answer in the correct number of significant figures.

Significant Figures Chemistry

01/27/21

#### Convert the following into correct scientific notation:

I got the numbers right, but not the correct powers.a) 445.5 X 104 I got 4.455 X 10 to the? It is not 4 and it is not 2b) 7804.7 X 10-6 I got 7.8047 X 10 to the? It is not -6 and it is not 3c)...
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Significant Figures Chemistry

01/25/21

#### Carry out the following calculation, making sure that your answer has the correct number of significant figures:

7.61 g divided by 13.4 g - 8.17 g

Significant Figures Chemistry

08/24/20

#### How many significant figures are in the answer when you divide 486.02 by 0.056?

Significant Figures Chemistry

08/24/20

#### How many significant figures are in the answer when you multiply 67.20 x 8.02?

#### Round off each of the following numbers to 3 significant figures

A) 397.48B) 145,620C) 0.008602D) 1955

Significant Figures

09/06/18

#### If you measure 10 rods at 95mm, and measure 100 more rods at 97mm, then calculate the average, how many significant figures will the average have?

Significant figures when averaging measured values.

09/05/18

#### 2.70 g/cm^3 converted to kg/m^3

for my answer on my calculator I get 2700 g/m^3 But I’m not sure if I write 270. g/m^3 as my final answer because of the rounding to the least significant figure rule which we started with 2.70...
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09/04/18

#### Help with answering "Carry out each calculation. Report the answer using scientific notation and the proper number of significant figures."

"Carry out each calculation. Report the answer using scientific notation and the proper number of significant figures."
a. 41,390 × 0.725
b. 1,000/1.53
c. 23,000/0.5744

Significant Figures Chemistry

08/26/18

#### Measuring Sig Figs

Hi I'm confused with measuring sig figs. Let's say that the ruler is going up in tenths and our number is exact at 7. Would we still have to include the two zeroes to show that there could be...
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08/26/18

#### Rounding Significant Figures in Factor Labeling

Do you wait to round to significant figures till the last moment in Factor labeling in chemistry? I thought you always had to round sig figs whenever you did any multiplication/division, but it...
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08/23/18

#### Carry out the following operations and express the answer with the appropriate number of significant figures: [(285.3x10^5)-(1.200x10^3)]x2.8954

How do I solve this problem with the scientific notation? And when it comes to the rules of significant figures, do I use the rule pertaining to subtraction or the one pertaining to...
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07/20/18

#### Question about how significant digits work in chemistry.

I'm doing my online chemistry summer class and significant digits are included, of course. But I'm confused about them because everything I believe is being contradicted. Here's what I...
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Significant Figures

04/30/18

#### 6.626 X 10 exponent 34 what is the significant figure?

I need To know the significant figure of this question. Unsure if it’s 4 or more.

Significant Figures

04/21/18

#### 0.50505 , please round this number to 2 significant figures

round this number to 2 significant figures 0.50505

02/28/18

#### Significant figures

When doing kinematic equations if I have an initial velocity of 0m/s would that mean that my final answer should have 1 significant figure or would I use the 3 significant figures my other numbers...
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12/22/17

#### How many significant figures should I solve with?

Here is my question:
Calculate the radius of an iridium atom, given that Ir has an FCC crystal structure, a density of 22.4 g/cm3 , and an atomic weight of 192.2 g/mol and NA = 6.022 x 1023....
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12/18/17

#### Is significant figure important for atomic radius calculations?

Is significant figure important for atomic radius calculations?Calculate the radius of a vanadium atom, given that V has BCC crystal structure, a density of 5.96g/cm3, and an atomic weight of...
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11/13/17

#### Calculate the mass percent composition of each element in each compound.

FeCl3
Mass % of Fe, Cl
Express your answer using four significant figures

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