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
kolbaska11 [484]
3 years ago
15

What is the solution to the problem expressed to he correct number of significant figures? 12.0/7.11

Chemistry
1 answer:
Law Incorporation [45]3 years ago
6 0

Answer: The solution to the problem expressed to he correct number of significant figures is 1.69

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.

The rule applied for multiplication and division is :

The least precise number determines the number of significant figures in the answer.

As 12.0 has 3 significant digits and 7.11 also has 3 significant digits, the answer would also contain 3 significant digits.

For \frac{12.0}{7.11}=1.69

Thus the solution to the problem expressed to he correct number of significant figures is 1.69

You might be interested in
A tall pea plant (Tt) is crossbred with another tall pea plant (Tt). The following Punnett square shows the separated alleles fo
Luba_88 [7]

Answer:

B.

Explanation:

when you use punnett squares, you cross the different genes with themselves. if T is in the first box on both sides, the genome will be TT. if the box lines up to tt, it will be tt. the boxes on the left use the genes' first letter and the boxes on the right use the second letter.

7 0
3 years ago
Read 2 more answers
How are the African plate and south American plate moving relative to each other
Kamila [148]
They are moving away from each other
6 0
3 years ago
How much energy is released when 0.40 mol C6H6(g) completely reacts with oxygen.
Mashutka [201]
You have to find the gram formula mass of C6H6 then do mass (g) = mol x GFM
5 0
3 years ago
Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a pure copper cathode in an el
givi [52]

Answer: The amount of time needed to plate 14.0 kg of copper onto the cathode is 295 hours

Explanation:

We are given:

Moles of electron = 1 mole

According to mole concept:

1 mole of an atom contains 6.022\times 10^{23} number of particles.

We know that:

Charge on 1 electron = 1.6\times 10^{-19}C

Charge on 1 mole of electrons = 1.6\times 10^{-19}\times 6.022\times 10^{23}=96500C

Cu^{2+}+2e^-\rightarrow Cu

2\times 96500=193000C is passed to deposit = 1 mole of copper

63.5 g of copper is deposited by = 193000 C

14\times 1000g=14000g of copper is deposited by =\frac{193000}{63.5}\times 14000=42551181 C

To calculate the time required, we use the equation:

I=\frac{q}{t}

where,

I = current passed = 40.0 A

q = total charge = 42551181 C

t = time required = ?

Putting values in above equation, we get:

40.0=\frac{42551181 C}{t}\\\\t=1063779sec

Converting this into hours, we use the conversion factor:

1 hr = 3600 seconds

So, 1063779s\times \frac{1hr}{3600s}=295hr

Hence, the amount of time needed to plate 14.0 kg of copper onto the cathode is 295 hours

3 0
3 years ago
What are examples of everyday chemical reactions?
Softa [21]
<span>Photosynthesis Is a Reaction To Make Food</span>
7 0
3 years ago
Other questions:
  • How many atoms of potassium are in 0.250 mol of potassium carbonate, k2co3?
    9·1 answer
  • The entire set of chemical reactions carried out by an organism make up the organism’s _____.
    5·2 answers
  • Boiling is an example of a physical property. How do the particles of gas compare to the particles as a liquid?
    11·2 answers
  • Considering the following precipitation reaction: Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq),
    12·2 answers
  • Select the correct answer.
    10·1 answer
  • Please Help I will give a brainliest
    8·1 answer
  • HELP!! URGENT!! WILL GIVE BRAINIEST
    15·1 answer
  • What types of radiation cause the parent isotope to change into a different element?
    12·1 answer
  • HELP WILL GIVE BRANLIEST
    12·1 answer
  • What are Properties that can be recognized only when substances react or do not react
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!