1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Arte-miy333 [17]
3 years ago
5

In the number 48.93, which digit is estimated?

Chemistry
1 answer:
Fudgin [204]3 years ago
7 0
The answer is 3.

Explanation:
It’s the last number and it can’t be 9 because then it would be 48.9 and no 3.
You might be interested in
The process of pouring a mixture through a filter to catch the larger particles, while allowing the smaller particles to pass th
ki77a [65]
It’s is b. Filtration
7 0
3 years ago
14.
crimeas [40]

Answer:

Jeweler B = more accurate

Jeweler A = more precise

Error:

0.008, 0

% error :

0.934% ; 0

Explanation:

Given that:

True mass of nugget = 0.856

Jeweler A: 0.863 g, 0.869 g, 0.859 g

Jeweler B: 0.875 g, 0.834 g, 0.858 g

Official measurement (A) = 0.863 + 0.869 + 0.859 = 2.591 / 3 = 0.864

Official measurement (B) = 0.875 + 0.834 + 0.858 = 2.567 / 3 = 0.8556

Accuracy = closeness of a measurement to the true value

Accuracy = true value - official measurement

Jeweler A's accuracy :

0.856 - 0.864 = - 0.008

Jeweler B's accuracy :

0.856 - 0.856 = 0.00

Therefore, Jeweler B's official measurement is more accurate as it is more close to the true value of the gold nugget.

However, Jeweler A's official measurement is more precise as each Jeweler A's measurement are closer to one another than Jeweler B's measurement which are more spread out.

Error:

Jeweler A's error :

0.864 - 0.856 = 0.008

% error =( error / true value) × 100

% error = (0.008/0.856) × 100% = 0.934%

Jeweler B's error :

0.856 - 0.856 = 0 ( since the official measurement as been rounded to match the decimal representation of the true value)

% error = 0%

3 0
2 years ago
Express in scientific notation. Make sure your answer has the same number of significant figures as the starting value. (1.8 x 1
slamgirl [31]

Answer : The answer is, 0.2\times 10^{-4}

Explanation :

Scientific notation : It is defined as the way or representation of expressing the number that are too big or too small that is written in the decimal form. That means always written in the power of 10 form.

For example : 8000 is written as, 8.0\times 10^3  in this notation, the significant figure is, 1 but 0.8\times 10^4  in this notation, the significant figures are, 2

The given problem are :

\frac{1.8\times 10^{-2}}{9\times 10^2}=0.2\times 10^{-4}

According to the divide and multiplication rules of scientific figures, the final answer is only as precise as the value with the least number of significant figures.

Hence, the answer is, 0.2\times 10^{-4}

6 0
3 years ago
Read 2 more answers
What is the molarity of a solution that has 2.52 grams of NaCO3 dissolved to
sammy [17]

Answer:

Explanation:

2.52g/ 0.125L= 20.16M

5 0
2 years ago
A welding torch requires 602.1 L of ethylene gas at 2.77 atm. What will be the pressure of the gas if ethylene is supplied by a
Katarina [22]
PV=PV
(602.1 L)(2.77atm) = (110.6 L) (X atm)
1667.817=110.6X
15.07971971 atm = X
Rounds to 15.1 (sig figs so much fun)
8 0
2 years ago
Other questions:
  • How many atoms are accommodated by the available orbitals for Ne?
    10·1 answer
  • An aqueous solution of 4.57 M H2SO4 has a density of 1.25 g/mL. Calculate the molality of this solution
    7·2 answers
  • The empirical formula of a molecule is C2H6. In an experiment, the Molar mass of the molecule was determined to be 90.21g/mol. U
    14·1 answer
  • Plz help! This question is due in 10 mins!
    5·1 answer
  • How many moles of hcl will react with one mole of sodium hydroxide
    6·1 answer
  • Which of the following claims about a binary compound in which the bonding is ionic is most likely to be scientifically valid?
    14·1 answer
  • 1.Explain why the reactivity of group 7 decreases as you move down the group. Try to use the sentence starters here: When group
    8·1 answer
  • What’s the difference in kinetic energy of solids, liquids, and gases.
    12·1 answer
  • How many grams of NaOH are in 200 mL of a 3.OM NaOH<br> solution?<br> Na=23<br> O=16<br> H=1.01
    7·1 answer
  • How does a barometer predict the weather?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!