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
xeze [42]
3 years ago
11

Which best describes two ways in which hydrogen is involved in photosynthesis?

Chemistry
2 answers:
RSB [31]3 years ago
5 0

Answer:

It is <em>C</em>

Explanation:

sveticcg [70]3 years ago
4 0

Answer:

C

Explanation:

Just took the test

You might be interested in
Pls help! its 20pts!<br> brainliest, rattings, thanks, etc...
Misha Larkins [42]

Question 4: The first one

Question 5: The fourth one

Question 6: The first one

Question 7: The third one

5 0
3 years ago
Read 2 more answers
What is the temperature of 0.5 moles of water vapor that occupies 120 dm3 and applies a pressure of 15,000 Pa to its container?
MArishka [77]
Use the ideal gas law:

PV = nRT

so, T = PV / nR

n=0.5
V= 120 dm^3 = 120 L  (1 dm^3 = 1 L)
R = 1/12
P = 15,000 Pa =  0.147 atm     (1 pa = 9.86 10^{-6} )

Put the values:

T = PV / nR
T = (0.147) (120) / (0.5) (1/12)
T= 426 K
6 0
3 years ago
When you see the word heptahydrate, what number should be written in front of the formula for water? 5 6 7 8?
Yuki888 [10]
Hept for 7, hence the number is seven.
8 0
3 years ago
A drop of water weighing 0.48 g is vaporized at 100 ?c and condenses on the surface of a 55-g block of aluminum that is initiall
irakobra [83]
<h3><u>Answer;</u></h3>

<em>-49 °C</em>

<h3><u>Explanation and solution;</u></h3>
  • Considering the fact that, the specific heat capacity of aluminum is 0.903 J/g x C, and the heat of vaporization of water at 25 C is 44.0 KJ/mol.  

Moles water = 0.48 g / 18.02 g/mol

                      =0.0266  moles

<em>Heat lost by water</em> = 0.0266 mol x 44.0 kJ/mol

                                 =1.17 kJ => 1170 J  

<em>But heat lost =heat gained</em>

<em>Therefore;</em> Heat gained by aluminium = 1170 J  

        1170 = 55 x 0.903 ( T - 25) = 49.7 T - 1242  

                   1170 + 1242 = 49.7 T  

            T = 48.5 °C ( 49 °C <em>at two significant figures)</em>

<em>Hence</em>, final temperature = 49 °C

4 0
3 years ago
Read 2 more answers
Help please I’m being timed!
Firlakuza [10]

Answer:

a

Explanation:

3 0
2 years ago
Other questions:
  • An object has a mass of 5 kg. What force is needed to accelerate it at 6 m/s2? (Formula: F=ma) 0.83 N 1.2 N 11 N 30 N
    6·2 answers
  • Under the same conditions of solar radiation, compared with oceans the land will warm_________
    12·1 answer
  • Describe the law of conservation of mass and how it applies to chemical reactions.
    14·1 answer
  • How many molecules of N2 are in a 400.0 mL container at 780 mm Hg and 135°C? Avogadro’s number = 6.022 x 1023A) 7.01 × 1021 mole
    15·2 answers
  • A slice of cheese has a mass of 21 g and a volume of 15 cm3. What is the density of the cheese in units of g/cm3 and g/mL?
    11·1 answer
  • How to do Criss cross method of lithium carbide?
    9·1 answer
  • Ammonia is produced by the Haber process. The equation is shown.
    8·2 answers
  • Three fundamental types of organic molecules are proteins, carbohydrates, and lipids. What is the fourth type?
    7·2 answers
  • What is a number bond.
    7·1 answer
  • Can someone explain to me how to do Stoichiometry problems please
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!