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
White raven [17]
3 years ago
5

What is normal body temperature in kelvins? Express your answer in kelvins using four significant figures.

Chemistry
1 answer:
nlexa [21]3 years ago
5 0

Answer : The normal body temperature in kelvins is, 310.2 K

Explanation :

The normal body temperature for human in degree Celsius is, 37^oC

Now we have to convert it into kelvin.

The conversion used for the temperature from degree Celsius to Kelvin is:

K=273.15+^oC

where,

K = temperature in Kelvin

^oC = temperature in centigrade

As we are given the temperature,  37^oC

So,

K=273.15+^oC

K=273.15+(37^oC)

K=310.15\approx 310.2

Thus, the normal body temperature in kelvins is, 310.2 K

You might be interested in
If a pork roast must absorb kJ to fully cook, and if only 10% of the heat produced by the barbecue is actually absorbed by the r
kolezko [41]

Answer:

1,033.56 grams of carbon dioxide was emitted into the atmosphere.

Explanation:

C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g),\Delta H_{rxn}=-2044 kJ/mol (assuming)

Energy absorbed by pork,E = 1.6\times 10^3 kJ (assuming)

Total energy produced by barbecue = Q

Percentage of energy absorbed by pork = 10%

10\%=\frac{E}{Q}\times 100

Q=\frac{E}{10}\times 100=\frac{1.6\times 10^3 kJ}{10}\times 100=1.6\times 10^4 kJ

Since, it is a energy produced in order to indicate the direction of heat produced we will use negative sign.

Q = -1.6\times 10^4 kJ

Moles of propane burnt to produce Q energy =n

n\times \Delta H_{rxn}=Q

n=\frac{Q}{\Delta H_{rxn}}=\frac{-1.6\times 10^4 kJ}{-2044 kJ/mol}=7.83 mol

According to reaction , 1 mol of propane gives 3 moles of carbon dioxide. then 7.83 moles of will give:

\frac{1}{3}\times 7.83 mol=23.49 mol carbon dioxide gas.

Mass of 23.49 moles of carbon dioxide gas:

23.49 mol × 44 g/mol =1,033.56 g

1,033.56 grams of carbon dioxide was emitted into the atmosphere.

8 0
2 years ago
Help please! I'd appreciate it 
babymother [125]

Answer:

16.56 g

Explanation:

Mass is the production of Volume and Density.

m = V. d = 6 × 2.76 = 16.56 g

6 0
3 years ago
John is outstanding forward on his club select soccer team. He is know for his ball control and speed. After a game he often mak
natima [27]

Answer:

This self evaluation helps them to better his sport.

Explanation:

This is the right way to evaluate the performance of John because this sketch shows him the way he perform in the match. Due to this sketch he can better his performance and remove all the mistakes he had done in the match which results in better performance of John in the next match. This self evaluation helps them to better his sport and got new chances in order to select for a better club or national soccer team.

4 0
3 years ago
Uranium and ________ are needed to run a nuclear reactor.
Ede4ka [16]
Water.  The energy from the fission reaction is used to heat water.  The water vaporizes which causes pressure rise.  The pressure is used to drive a turbine which runs a generator.
I hope this helps.
7 0
3 years ago
Fe3+(aq) (yellow) + SCN-(aq) (colorless) FeSCN2+(aq) (blood-red) Chloride ions are colorless. Potassium ions are also colorless.
harina [27]

Explanation:

Fe^{3+}\text{(aq)(yellow)}+SCN^-\text{(aq)(colorless)}\rightleftharpoons FeSCN^{2+}\text{(aq)(blood-red)}

K^+\text{(aq)(colorless)}+Cl^-\text{(aq)(colorless)}\rightarrow KCl

The above two reactions xcan also be written in form of single chemcial equation:

FeCl_3+K(SCN)\rightleftharpoons KCl+[Fe(SCN)]Cl_2(blood-red)

1. Color of ferric chloride solution is yellow. This is due to presence of ferric ions which have yellow color in their aqueous solutions.

2. KSCN has the colorless solution. This due to potassium ion forms colorless aqueous solution.

3. On mixing, KSCN with FeCl_3 we will get blood red color solution of [FeSCN]Cl_2.

5 0
3 years ago
Other questions:
  • Calculate the boiling point of a 2.00 molal solution of magnesium perchlorate, mg(clo4)2, in water.
    9·1 answer
  • If oxygen is removed from a sample of air as iron rusts, what happens to the partial pressure of oxygen in the air? A it increas
    14·2 answers
  • What is the velocity baseball field to school
    14·1 answer
  • What is the best definition of "thinking at the margin"? *
    5·1 answer
  • Carbon atom is tetravalent in nature. How many hydrogen atoms can bind to one carbon atom?
    13·1 answer
  • You’re a little baby sister knocks over the vase of flowers on the table what kind of force is your baby sister
    10·1 answer
  • There are many important laws and theories in science. Which of the following is a law of science?
    13·2 answers
  • When forming ions, nitrogen will gain or lose how many electrons, forming a cations or anions with a what charge?
    11·1 answer
  • The electrolyte magnesium chloride (MgCl2) will break up into how many individual particles in water (what is the i value)?
    12·1 answer
  • Why do we have to be careful in handling flammable materials?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!