Chemistry, 02.10.2019 21:20 Dontslack

What does 1.23x3.456 equal? 0 4.250 o 4.3 04.25 4.251

Answers: 3

Show answers

Answers

Answer from: sophiapilare8276

4.25

Explanation:

First you need to find the number of significant figures in each quantity:

1.23 has three significant figures

3.456 has four significant figures

When you are multiplying quantities, your result must have the same number of significant figures that the smallest value, in this case three significant figures, so:

1.23*3.456=4.25088

And you need to report your answer with three significant figures, so you should round the result:

4.25088 ≅ 4.25

Answer from: PanjiUR9220

The result of the given problem is 4.25

Explanation:

Significant figures are defined as the figures present in a number that expresses the magnitude of a quantity to a specific degree of accuracy.

Rules for the identification of significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.All non-zero numbers are always significant. For example: 664, 6.64 and 66.4 all have three significant figures.All zeros between the integers are always significant. For example: 5018, 5.018 and 50.18 all have four significant figures.All zeros preceding the first integers are never significant. For example: 0.00058 has two significant figures.All zeros after the decimal point are always significant. For example: 2.500, 25.00 and 250.0 all have four significant figures.All zeroes used solely for spacing the decimal point are not significant. For example: 10000 has one significant figure.

We are given:

$1.23\times 3.456$

The mathematical operation used in the above expression is multiplication

Rule applied for multiplication and division is:

Number of significant digits in the result is based on the least precise number in the given numbers.

$1.23\times 3.456=4.25088$

As, the least precise number in the given numbers are 3.

Hence, the result of the given problem is 4.25

Answer from: Quest

an honest friend. a friend who cares about me, and wont use me. a friend that i can trust. not someone who is fake

mark this brainliest lol i need one more.

Answer from: Quest

i just learnt this recently but i need to look through my notes again

Another question on Chemistry

Chemistry, 21.06.2019 22:20

Asolution is made by dissolving 25.5 grams of glucose (c6h12o6) in 398 grams of water. what is the freezing point depression of the solvent if the freezing point constant is -1.86 °c/m? show all of the work needed to solve this problem.

Answers: 1

Answer

Chemistry, 22.06.2019 08:00

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Answers: 2

Answer

Chemistry, 22.06.2019 21:00

Rays from the sun are not considered matter true or false

Answers: 2

Answer

Chemistry, 22.06.2019 23:00

What does a numerical subscript following an element in a chemical formula mean?

Answers: 1

Answer

You know the right answer?

What does 1.23x3.456 equal? 0 4.250 o 4.3 04.25 4.251...