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
murzikaleks [220]
4 years ago
6

Select the answer with the correct number of significant figures for each calculation. 31.580 + 4.26 = 35.8 35.84 35.840

Chemistry
2 answers:
Llana [10]4 years ago
8 0

Answer:

35.84

Explanation:

Next one is 1.0243

Oksanka [162]4 years ago
5 0
The answer is 35.84

When adding using significant figures, you round the answer to the the number of decimal places of the lower-decimal number. 
In this case, 4.26 has the lower number of decimal places (hundredths), so we round to hundredths. 
You might be interested in
Lead−206 is the end product of 238u decay. one 206pb atom has a mass of 205.974440 amu. (a) calculate the binding energy per nuc
Dovator [93]
The atomic number for Pb is 82
∴ Pb has 82 protons and 206-82 = 14 protons
The actual mass of Pb nuclei is
=(82 × mass of the proton) + (124 × mass of neutron)
=(82× 1.00728) + (124 × 1.008664) amu
= 207.6713 amu
The mass of lead which is given is 205.9744 amu
∴mass defect is
m = 207.6713 - 205.9744 = 1.6969 amu
=1.6969 × 1.66054 × 10⁻²⁷kg
=2.818 × 10⁻²⁷kg
The binding energy is E = mc²
C is the speed of light in vacuum = 2.9979 × 10⁸m/s
∴ E = 2.532 × 10×⁻¹⁰ J/mol
= 2.532 × 10⁻¹⁰ × 6.023 × 10²³ J/mol 
= 1.53811 × 10¹⁴ J/mol

8 0
4 years ago
What powers explosions and fire
Artyom0805 [142]
Almost always oxidation,
the speed of the reaction is the big difference between fire and explosions
<span>(and slower yet - the "respiration" reactions that keep you alive).</span>
5 0
3 years ago
A student mixes some sugar into a cup of hot water. The sugar dissolves in the liquid. What are the BEST ways for the student to
polet [3.4K]
You would have to evaporate the water to get just the sugar

6 0
3 years ago
A certain sample of a liquid has a mass of 42 grams and a volume of 35 centimeters3. What is the density of the liquid? The dens
Xelga [282]

Density of liquid= \frac{mass of liquid}{volume of liquid}.

so, density of liquid= \frac{42 gm}{35 cm^{3} }= 1.2 gm/cm³.

8 0
3 years ago
Read 2 more answers
Determine the molarity for each of these solutions. Then lost the solutions in order of increasing molarity.
Vaselesa [24]
B.) 50g C6H1206 per 0.25L
4 0
4 years ago
Other questions:
  • The two elements discovered by Marie Curie are _____ and _____. uranium curium radium polonium
    10·2 answers
  • I need help with number 3. is the answer 1,2,3,or4
    8·1 answer
  • A block of aluminum occupies a volume of 0.015 L and has a mass of 40.5 g. What is its density
    6·1 answer
  • Which of the following is true concerning the reaction below?
    11·2 answers
  • How many milliliters (mL) are in 0.847 liters (L)
    8·1 answer
  • Which of the following measurements is expressed to three significant figures?
    13·1 answer
  • What is the purpose of the scientific method
    12·1 answer
  • What document, signed by the district attorney, authorizes the search of a building for the purpose of collecting evidence at a
    5·2 answers
  • Please help me with this
    8·1 answer
  • How is this type of question solved?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!