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
slega [8]
3 years ago
8

A person's heartbeat is 73 beats per minute. If his heart beats 3.1e9 times in a lifetime, how long does the person live?

Chemistry
1 answer:
tiny-mole [99]3 years ago
7 0

Answer:  The person lived for 80.66 years.

Explanation:

Heart beat of the person = 73 beat /min

Number of total heart beats = 3.1\times 10^{9}

Life span of the person : \frac{\text{Total heart beats of the person}}{\text{Heart beat per minute}}=\frac{3.1\times 10^{9} beats}{73 beat/min}

1 year =525600 mins

Life span = 0.0424\times 10^{9} min=80.66 years

The person lived for 80.66 years.

You might be interested in
Find any errors in the orbital notation diagrams below and correct them.
riadik2000 [5.3K]

Answer:

See explanation.

Explanation:

A. 2s is incorrect, the right arrow should be pointing downwards.

B. In 2p, the last box has 3 arrows. This is invalid. Each box can only store 2 arrows(electrons).  The last arrow should be moved to a 3p orbital (new box).

C. In this one, the arrows switched directions (left is down and right is up). You could fix each box or just the last one (in 3p) to point downwards.

4 0
3 years ago
If a radioisotope has a half-life of 4 years, how much remains of a starting amount of 40 grams after 16 years have passed?
Gwar [14]

Answer:

only 2.5 grams will be present after 16 years have passed

5 0
3 years ago
Which of the following are elements nd which are compounds H2,HCI,Na,Al2O3,H2O
stepan [7]
H2-element
HCl-compound
Na-element
Al2O3-compound
H2O-compound
6 0
3 years ago
Please help....thanks :)
Naya [18.7K]

Answer: someone help me with my work its so  hard

Explanation:

6 0
3 years ago
What is the minimum amount of heat required to completely melt 20.0 grams of ice af it's melting point
Veseljchak [2.6K]
The answer is 6608J ..
8 0
3 years ago
Other questions:
  • A 10.0 g sample of propane, C3H8, was combusted in a constant-volume bomb calorimeter. The total heat capacity of the bomb calor
    11·1 answer
  • What is the volume of a solid with a length of 10cm, a height of 3cm, and a width of 5cm
    15·1 answer
  • Salt and sugar are poured into a glass of water and stirred. Slowly, the salt and sugar crystals become harder to see and then c
    5·1 answer
  • What makes a solution saturated?
    9·2 answers
  • Select the correct answer. Which electromagnetic wave has the longest wavelength? microwaves O B. infrared rays O C. X-rays radi
    11·1 answer
  • Write a balanced chemical equation depicting the formation of one mole of H2O2(g) from its elements in their standard states.
    10·1 answer
  • 19 Down syndrome is a genetic disorder caused by the
    6·1 answer
  • Which of the following provides the best evidence that a chemical change is taking place? A. metal object becomes shorter when i
    13·1 answer
  • 1. waves that use matter to transfer energy
    10·1 answer
  • 5. The tradition of giving teachers an apple goes back to 19th century Denmark, where
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!