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
Eddi Din [679]
3 years ago
12

The mass of a glass beaker is known to be 24.8 g. Approximately 5 mL of water are added, and the mass of the beaker and water is

measured on an analytical balance to
be 30.625 g How many significant figures are there in the mass of the water?
Chemistry
1 answer:
jok3333 [9.3K]3 years ago
5 0

Answer:

  • <u>Two signficant figures.</u>

Explanation:

You need to tell how many significant figures there are in the mass of water, which is calculated as the difference of two measures: 30.625 - 24.8.

You must round the mass of water to the least number of places in the decimal portion found in the two numbers that participate in the subtraction.

The least number of places in the decimal part corresponds to the measure 24.8 g and it is 1 decimal.

So, your answer must be rounded to 1 decimal:

  • Subtraction: 30.625 g - 24.8 g = 5.825 g
  • Round to 1 decimal: 5.8 g

Some rules that you must follow to determine how many significant figures there are in a measure are:

  •  Every non-zero digits in number are always significant.
  •   Also every zero between two significant digits are significant.
  •  Zeros in between the decimal point  and the first a non-zero decimal digit are not significant.
  • In a whole number final zeros cannot be taken as significant (e.g. it is ambiguos the number of significant digits in measures as 3,300).
  • Trailing zeros to the right of a decimal point are significant.

So, in the 5.8 you apply the first rule: non-zero digits are always significant. So, the two digits in 5.8 are significant.

You might be interested in
A double-replacement reaction takes place when aqueous cobalt (III) chloride reacts with aqueous lithium hydroxide. One of the p
olga55 [171]
The correct answer is Co(OH) 3
5 0
3 years ago
Answer the question below. Use the rubric in the materials for help if needed.
earnstyle [38]

Answer:

..

...

....

Explanation:

hop it helps.....

8 0
3 years ago
Please help me it's just one question!
sashaice [31]

Answer:

hope this help

Explanation:

brainliest pls

6 0
3 years ago
Anions have more ___ then __
never [62]
C protons, elctrons 093939393
6 0
3 years ago
11111111111111111111
Lady bird [3.3K]

Answer:

2222222222

Explanation:

mark me branliest of

5 0
3 years ago
Other questions:
  • Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) In a particular ex
    12·1 answer
  • True or false. Gas particles never touch each other.
    9·1 answer
  • You have collected a tissue specimen that you would like to preserve by freeze drying. To ensure the integrity of the specimen,
    12·1 answer
  • Below are the reduction half reactions for chemolithoautotrophic nitrification, where ammonia is a source of electrons and energ
    10·1 answer
  • I NEED HELP FAST!!!!! Can you tell me about the structure of atoms??? I have a DBA in a few minutes and I don't know!!! Please u
    8·1 answer
  • What is an example of a system in a state of balance?
    5·1 answer
  • 1) A sample of copper has a mass of 4.75 g and a volume
    6·1 answer
  • Which internal system is responsible for transporting oxygen and nutrients through an animal's body?
    14·2 answers
  • 7. What assumption of the kinetic-molecular theory explains why a gas can expand to fill a container?
    6·1 answer
  • Calculate the grams of so2 gas present at stp in a 5. 9 l container. (atomic weights: s=32, o=16).
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!