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
ASHA 777 [7]
2 years ago
14

Explain any differences in the pulse rate at rest and after exercise ( in own words btw^^

Chemistry
1 answer:
timurjin [86]2 years ago
5 0

Answer:

Pulse rate depends on the activity we do, while exercising theres need of more oxygen so it increases but while at rest body requires less oxygen so low pulse rate.

You might be interested in
7. Which two substances do geologists use in radiocarbon dating?
Sav [38]

Carbon -14 and Carbon 12 are the two substances geologists use in radiocarbon dating.

Answer: Option B

<u>Explanation: </u>

Radiocarbon dating denotes the determination process of the age of fossils of plants or animals based on the ratio of carbon atoms 14 to 12. Carbon naturally exists in two non-radioactive isotopes, Carbon-12 and Carbon-13 and one radioactive isotope carbon 14. The carbon 14 gets released on continuous cosmic reaction with atmospheric nitrogen.

These carbon 14 will be absorbed by the living plants and from the plants. Then, it will enter inside the animals which consume the plants. But once the plants and animals died, they ceased to intake carbon-14. In their living state, the ratios of carbon atoms 14 to 12 in them tends to similar to the ratio in atmosphere.

But after they die, the ratio of C-14 to C-12 will be varying from the ratio of C-14 to C-12 in atmosphere as the concentration of C-14 will be decreasing in the dead animals and plants. Thus using this ratio, geologists can find the fossil's age.

7 0
3 years ago
Im the only noble gas with 2 electrons
iris [78.8K]

Answer:

Helium

Explanation:

8 0
3 years ago
Read 2 more answers
Elements within a period have ___.
Vlada [557]

Ans: Have the same number of electron shells

3 0
3 years ago
5. Thomson's experiments with cathode rays led to the discovery of the:<br> electron<br> Neutron
Alex_Xolod [135]
Electron because it’s more valid than neutron
7 0
3 years ago
A mixture of propane and butane is fed into a furnace where it is mixed with air. the furnace exhaust leaves the furnace at 305°
IgorLugansk [536]
In this item, I supposed, that we are determine the molar fraction of oxygen and carbon dioxide in the sample. This can be done by dividing their respective partial pressures by the total pressure of the sample.

   O2 : mole fraction = (100.7 mmHg) / (763.00 mmHg)  = 0.13

   CO2 : mole fraction = (33.57 mmHg) / (763.00 mmHg) = 0.044

Answers: O2 = 0.13
               CO2 = 0.044
3 0
3 years ago
Other questions:
  • Explain the relationship between high and low <br> pressure.
    9·1 answer
  • What is the relationship between humidity and air pressure
    13·2 answers
  • Which of the following does not form a diatomic molecule?
    9·2 answers
  • You know the deal kingdom
    8·1 answer
  • What does it mean to have a control group
    8·2 answers
  • Rank the following in order from most acidic to least acidic. sample pH bleach 12.5 coffee 4.2 rainwater 5.4 soap 10.1 (1 point)
    9·1 answer
  • When water is solid, do molecules move?
    12·2 answers
  • Vanadium has an atomic mass of 50.9415 amu. It has two common isotopes. One isotope has a mass of 50.9440 amu and a relative abu
    6·1 answer
  • How is a pure substance different from a mixture? A.Pure substances are separated by physical means B. Mixtures cannot be separa
    13·1 answer
  • I have 2 Valence electrons and 1 energy levels
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!