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
loris [4]
3 years ago
6

Perform the following

Chemistry
1 answer:
docker41 [41]3 years ago
3 0

Answer:

8.73

Explanation:

when you are adding or subtracting numbers, the sigfig (significant figure) is based on how many numbers after the decimal. with this info, we can see that 15.67 has 2 sigfigs and 6.943 has 3 sigfigs. when you subtract normally, you would get 8.727, which has 3 sigfigs, so you would round the last 7 up to get 8.73 with 2 sigfigs!

also it is to 2 sigfigs because we know that we go by the least number of sigfigs. hope this helped!

You might be interested in
300 °C would be found in which temperature range?
devlian [24]
Hey it’s D
673K-772K
8 0
3 years ago
What is the point of doing an experiment. Help thank you​
bogdanovich [222]

Answer:

to find out how somethings work

Explanation:

7 0
3 years ago
Read 2 more answers
Wich of these equations are balanced? a) H2SO4+2AL--->AL2(SO4) b)2KCL+Pb(NO3)2--->2KNO3+PbCL2
Zolol [24]

The answer is b since on a it says H2 but on the right side there is no H idk if you forgot to put H there so im guessing b. Have a good day

4 0
2 years ago
Tollens’ test, also known as silver-mirror test, is a qualitative laboratory test used to distinguish between an aldehyde and a
Makovka662 [10]

Explanation:

Tollens' reagent is prepared by using two-step process : -

Step 1:

Silver oxide is formed by mixing aqueous silver nitrate with base like sodium hydroxide. The reaction is shown below as:

AgNO_3 + NaOH &\rightarrow AgOH + NHO_3 \nonumber \\ 2AgOH &\rightarrow Ag_2O + H_2O

Step 2

Ammonia solution is drop-wise added until all the silver oxide dissolves to form the reagent. The reaction is shown below as:

Ag_2O + 4NH_3 + H_2O \rightarrow 2Ag(NH_3)_2^+ + 2OH^-

3 0
3 years ago
How many uL are present in 250 mL of H20? (1 uL = 10^-6 Liters)​
Vanyuwa [196]

Answer:

250000 μL

Explanation:

If         1 L = 1000 mL

Then  X L = 250 mL

X = (1 × 250) / 1000 = 0.25 L

Now we can calculate the number of microliters (μL) in 0.25 L:

if        1 μL = 10⁻⁶ L

then   X μL = 0.25 L

X = (1 × 0.25) / 10⁻⁶  =250000 μL

4 0
3 years ago
Other questions:
  • The expression CaCO3 → CaO + CO2 is an example of a
    7·2 answers
  • If sea water has a density of 1.025 kg/L and 3.5% of the mass in sea water is salt, determine the mass of salt dissolved in 500
    7·1 answer
  • Which is classified as an inner transition element
    10·2 answers
  • The mass number of a chemical atom is 52 and it has protons. How many neutrons does this atom have?
    6·2 answers
  • Property by virtue of which metals can be beaten into shapes
    5·1 answer
  • The density of osmium, which is the densest metal, is 22.57g/cm3. What is the mass of a block of osmium that measures 1.00cm x 4
    12·2 answers
  • Steel is formed by Group of answer choices oxidizing some of the iron to iron oxides. combining iron, carbon and transition meta
    9·1 answer
  • Which best defines the term drug
    12·2 answers
  • What change would most likely decrease the rate of a chemical reaction? A) maintaining a temperature close to room temperature B
    12·1 answer
  • 1.5.2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!