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
Paul [167]
3 years ago
13

Round off each number to the indicated number of significant figures (sf)

Chemistry
2 answers:
olga55 [171]3 years ago
5 0

Answer:

(a) 2.316x10^2 or 231.6

(b) 8.5x10^{-3}

(c) 1.4x10^2

Explanation:

Hello,

In this case, we must remember that we round numbers if the next number is equal or greater than 5 and that left-sided zeros are not included in the final result, in such a way:

(a) 2.316x10^2 or 231.6

(b) 8.5x10^{-3}

(c) 1.4x10^2

Best regards.

weeeeeb [17]3 years ago
3 0

Answer:

The answer is B

Explanation:

You might be interested in
It usually takes Vaughn 12 minutes to drive to school. She drives an average of 50.0 miles per hour. What is the distance from s
lilavasa [31]
<h3>Answer:</h3>

  = 633,600 Inches

<h3>Explanation:</h3>

Speed refers to the rate of change in distance traveled by a body in motion.

It is the ratio of distance to time taken.

It is calculated by;

Speed = Distance ÷time taken

Therefore;

Distance = Speed × time

In this case;

Time taken = 12 minutes ( but 1 hr = 60 mins)

Thus, t = 0.2 hours

Speed = 50.0 miles/hour

Thus;

Distance = 50.0 miles/hr × 0.2 hours

               = 10 miles

But, we are require to give the distance in inches;

1 mile = 63360 Inches

Therefore;

10 miles = 10 × 63360 Inches

            = 633,600 Inches

6 0
3 years ago
When body temperature rises during physical activity, which thermoregulatory response is stimulated?
navik [9.2K]

Answer: Heat dissipation mechanism

Explanation: Heat dissipation mechanism is a thermoregulatory response in humans whereby the hypothalamus of the brain initiates certain processes to reduce the high body temperature. Eg, sweating is initiated which helps cool down the body temperature, also superficial arteries are dilated, thereby leading to flushing and decreasing heatloss into the air. And metabolic heat production is also reduced.

8 0
3 years ago
A gaseous mixture of o2 and n2 contains 35.8 % nitrogen by mass. what is the partial pressure of oxygen in the mixture if the to
lubasha [3.4K]
The partial pressure is the amount of linguistic compound there is which makes the lagitude of the element 64.663
5 0
3 years ago
All answers must have the correct unit! (g/mL) d= mass/volume, d= masa/volumen
Radda [10]

heh.......... sorry man............... but this was posted over 5 hours ago........ so nobody is gonna see it and you probably dont need the answer anymore..... so errrr..... imma justtttt..... take these points :D

8 0
3 years ago
Both white phosphorus and red phosphorus are made up only of phosphorus atoms.Does this mean they are both pure substances? Coul
choli [55]
True, both of the red and white phosphorus is a pure substance.

Both red and white phosphorus is made of phosphor element but they have a different structure which causes them to have a different color. This phenomenon called allotropes when a chemical element has two or more different form.They are not compounds as they are only made of phosphorus. A compound should be made by at least two different elements.
4 0
3 years ago
Other questions:
  • How do i do quantitative observation on a hailstone
    11·1 answer
  • What mass of Al contains the same number of atoms as 33.5g of Au
    8·1 answer
  • When a hydrocarbon fuel is burned, almost all of the carbon in the fuel burns completely to form co2 (carbon dioxide), which is
    9·1 answer
  • 2.0 grams of ZnSO4 reacts completely with Li2CO3; how many grams of Li2SO4 would be produced?
    10·1 answer
  • The homogeneous, reversible exothermic, liquid-phase reaction A ↔ R is being carried out in a reactor system consisting of two i
    5·1 answer
  • What volume of silver metal will weigh exactly 2500g. The density of silver is 10,5 g/cubic centimeters.
    13·1 answer
  • A microwave has a wavelength of 0.028 m. What us this wavelength in scientific notation
    15·1 answer
  • Which of the following statements is NOT true?
    9·1 answer
  • Which equation represents the total ionic equation for the reaction of HNO3 and NaOH?
    14·1 answer
  • Hello again. Image is below
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!