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]
2 years ago
13

During photosynthesis, carbon dioxide and water react to produce glucose and oxygen. Which statement explains why photosynthesis

is classified as an endothermic reaction?
The activation energy of the reaction is positive.

The reaction requires a catalyst.

The products and reactants have the same amount of potential energy.

The reaction absorbs energy from the surroundings.
Chemistry
1 answer:
Phoenix [80]2 years ago
8 0

Answer:

The reaction absorbs energy from the surroundings

You might be interested in
How many electrons in an atom can share the quantum numbers n = 2, l = 1?<br> 1<br> 3<br> 6<br> 10
Igoryamba
Principal quantum number is n = 2, principal quantum number gives the energy shells electrons reside in,
angular momentum quantum number , these are the number of subshells and gives how many subshells are there in energy shells, values for l range from 0 to n-1
magnetic quantum number -m- gives the specific orbital in the subshells and their orientation.
spin quantum number gives the spin of the electrons.

in this case, n = 2
the types of subshells in n=2 are 0 and 1
0 - s subshell 
1 - p subshell
the  specific number of orbitals are given by -l to +l
when l = 1
then -1, 0 and +1
therefore there are 3 orbitals in p subshell and orbitals are in 3 orientations
each orbital can hold a maximum of 2 electrons, 
since there are 3 orbitals each holding 6, there are 6 electrons to which these quantum numbers are the same
answer is 6
7 0
3 years ago
Read 2 more answers
How much calcium can be recovered from 75.0g of calcium fluoride
7nadin3 [17]

38.46g

Explanation:

Given parameters:

Mass of CaF₂ = 75.0g

Unknown:

Mass of calcium that can be recovered = ?

Solution:

This is a mass percentage problem and we need to solve it accordingly.

To solve this problem;

Find the molar mass of  CaF₂

Find the ratio between the molar mass of Ca and that of  CaF₂

Multiply by the given mass

Molar mass of  CaF₂ = 40 + (2 x 19) = 78g/mol

Mass of calcium = \frac{40}{78} x 75 = 38.46g

learn more:

Mass percentage brainly.com/question/8170905

#learnwithBrainly

3 0
3 years ago
The reaction between carbon tetrachloride, CCl4, and water, H2O, to form carbon dioxide, CO2, and hydrogen chloride, HCl, has a
xxTIMURxx [149]

Answer:

High activation energy is the reason behind unsuccessful reaction.

Explanation:

There are two types of reaction: (1) thermodynamically controlled reaction and (2) kinetically controlled reaction.

Thermodynamically controlled reaction are associated with change in enthalpy during reaction. More negative the enthalpy change, more favored will be the reaction.

Kinetically controlled reaction are associated with activation energy of a reaction. The lower the activation energy value, the more rapid will be the reaction.

Here, reaction between CCl_{4} and H_{2}O is thermodynamically favored due to negative enthalpy change but the high activation energy does not allow the reaction to take place by simple mixing.

6 0
3 years ago
Quiénes son los<br>expertos para<br>hablarnos sobre<br>alimentación?:​
Fantom [35]

Answer:

es nutricionista el experto en esa area

3 0
2 years ago
WORTH 100 POINTS PLEASE HURRY!!!!!!!!
neonofarm [45]

Answer:

The answer is B

Explanation:

Less air means less air pressure. At a certain point, there is very little air pressure to push against the outward pressure of the helium inside the balloon. It will then expand until the rubber breaks, and the balloon bursts

5 0
3 years ago
Read 2 more answers
Other questions:
  • Is mass conserved when 40 G of sodium hydroxide undergoes a chemical change during an interaction with 36.5 grams of hydrogen ch
    7·1 answer
  • 1. What is energy measured in? 2. What should you consider when choosing which food you eat each day? 3. Name some energy stores
    15·1 answer
  • Which of the following lists the elements in order of increasing malleability
    6·2 answers
  • What is the freezing point of water that has had 1m salt solution added to it?
    5·1 answer
  • Two elements that have the same ground-state valence shell configuration of ns 2 np 2 are
    6·1 answer
  • 1. In 1996 a meteor crashed into the Earth near Steelsville, Ontario. The resulting meteorite was found to contain 5,790 g of Mo
    14·1 answer
  • True or False;<br> aa is faster moving lava than pahoehoe?
    11·1 answer
  • Ethylene produced by fermentation has a specific gravity of 0.787 at 25 degree Celsius. What is the volume of 125g of ethanol at
    15·1 answer
  • So if you had corbphydrates and hydronic acids and you put them together what would be the radius?​
    13·1 answer
  • 21. What is the frequency, given 2-3 x 10¹m? Show all work
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!