Physics, 19.07.2019 03:20 klpatrick853

How many significant figures are contained in each of the following measurements? (a) 38.7 g (b) 2 × 1018 m (c) 3,486,002 kg (d) 9.74150 × 10−4 j (e) 0.0613 cm3 (f) 17.0 kg (g) 0.01400 g/ml

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Answer from: bellagracebulle8018

Answer :

(a) There are 3 significant figures.

(b) There are 1 significant figures.

(d) There are 6 significant figures.

(e) There are 3 significant figures.

(f) There are 3 significant figures.

(g) There are 4 significant figures.

Explanation :

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for 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: 654, 6.54 and 65.4 all have three significant figures.All zero’s between integers are always significant. For example: 5005, 5.005 and 50.05 all have four significant figures.All zero’s preceding the first integers are never significant. For example: 0.0078 has two significant figures.All zero’s after the decimal point are always significant. For example: 4.500, 45.00 and 450.0 all have four significant figures.All zeroes used solely for spacing the decimal point are not significant. For example : 8000 has one significant figure.The exponential digits present in scientific notation are not significant, only decimal digits the significant. For example: $1.9\times 10^{9}$ has 2 significant figures (1 and 9).

(a) 38.7 g

According to the 2nd rule, there are 3 significant figures.

(b) $2\times 10^{18}m$

According to the 7th rule, there are 1 significant figures.

According to the 2nd rule, there are 7 significant figures.

(d) $9.74150\times 10^{-4}J$

According to the 7th rule, there are 6 significant figures.

(e) 0.0613cm^3

According to the 4th rule, there are 3 significant figures.

(f) 17.0 kg

According to the 5th rule, there are 3 significant figures.

(g) 0.01400 g/ml

According to the 4th rule, there are 4 significant figures.

Answer from: Quest

the answer is d. 4

hope this

also the more points you give the faster your questions get answered

Answer from: Quest

This is what i found on google “what happens to the bond angle when you add or remove an electron domain? the bond angle decreases as you add domains 5. can you force the atoms into new configurations by pushing atoms around? note: we can think of a bond or a lone pair of electrons as a “domain” of electrons.” i hope this you

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How many significant figures are contained in each of the following measurements? (a) 38.7 g (b) 2...