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
geniusboy [140]
3 years ago
10

How quick does it take for hearts to beat

Chemistry
1 answer:
serg [7]3 years ago
6 0

very quick like 4 beats per seconed

You might be interested in
What is the biggest source of vitamin D
Aleksandr [31]
The biggest source of vitamin D is the sun.
5 0
3 years ago
Read 2 more answers
The diagram below shows a gas sample being measured with an open-end mercury (Hg) manometer. If a barometer reads 730. 1 torr, w
IRISSAK [1]

The pressure of the gas in the flask (in atm) when Δh = 5.89 cm is 1.04 atm

<h3>Data obtained from the question</h3>

The following data were obtained from the question:

  • Atmospheric pressure (Pa) = 730.1 torr = 730.1 mmHg
  • Change in height (Δh) = 5.89 cm
  • Pressure due to Δh (PΔh) = 5.89 cmHg = 5.89 × 10 = 58.9 mmHg
  • Pressure of gas (P) =?

<h3>How to determine the pressure of the gas</h3>

The pressure of the gas can be obtained as illustrated below:

P = Pa + PΔh

P = 730.1 + 58.9

P = 789 mmHg

Divide by 760 to express in atm

P = 789 / 760

P = 1.04 atm

Thus, the pressure of the gas when Δh = 5.89 cm is 1.04 atm

Learn more about pressure:

brainly.com/question/22523697

#SPJ1

Missing part of question:

See attached photo

5 0
1 year ago
Which is the right answer?
Talja [164]

Answer:

i think its C

Explanation:

3 0
2 years ago
Nitrogen forms a surprising number of compounds with oxygen. A number of these, often given the collective symbol NOx (for "nitr
kvv77 [185]

Answer:

9.2

Explanation:

Let's do an equilibrium chart of this reaction:

2NO(g) + O₂(g) ⇄ 2NO₂(g)

4.9 atm    5.1 atm    0       Initial

-2x             -x           +2x    Reacts (stoichiometry is 2:1:2)

4.9-2x      5.1-x        2x      Equilibrium

The mole fraction of NO₂ (y) can be calculated by the Raoult's law, that states that the mole fraction is the partial pressure divided by the total pressure:

y = 2x/(4.9 - 2x + 5.1 -x + 2x)

0.52 = 2x/(10 - x)

2x = 5.2 -0.52x

2.52x = 5.2

x = 2.06 atm

Thus, the partial pressure at equilibrium are:

pNO = 4.9 -2*2.06 = 0.78 atm

pO₂ = 5.1 - 2.06 = 3.04 atm

pNO₂ = 2*2.06 = 4.12 atm

Thus, the pressure equilibrium constant Kp is:

Kp = [(pNO₂)²]/[(pNO)²*(pO₂)]

Kp = [(4.12)²]/[(0.78)²*3.04]

Kp = [16.9744]/[1.849536]

Kp = 9.2

4 0
3 years ago
James decided to do an experiment with a can of soda. He opened a 340 g can of soda and left it open for a day. The next day, he
amm1812

Answer:

A - The can was open and gases were released.

8 0
3 years ago
Other questions:
  • When rocks return to the Earth's mantle, they can eventually melt and become magma. _______ and _______ are the main factors tha
    6·2 answers
  • In this redox reaction, identify the reducing agent. 2Li + F2 2LiF
    8·2 answers
  • True or False the molecule CCl4 contains one double bond and three single bonds.
    15·2 answers
  • Summarize Le Chatelier’s principle with a general rule. (In the simplest way you can, thanks)
    14·1 answer
  • Temperature and kinetic energy are ___________ proportional.
    9·2 answers
  • How many atoms are equal to 4.61 moles of carbon?
    14·2 answers
  • Which of the following is NOT true about relative dating?
    12·1 answer
  • 3 key features of Asteroid
    13·1 answer
  • Convert the following measurements into the indicated units:<br><br>​
    9·1 answer
  • What element in the second period has the largest atomic radius?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!