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harina [27]
3 years ago
12

Which reaction is an example of an endothermic reaction?

Chemistry
2 answers:
DENIUS [597]3 years ago
3 0
In thermodynamics, the term endothermic process describes a process or reaction in which the system absorbs energy from its surroundings in the form of heat.
sashaice [31]3 years ago
3 0

Answer:

Photosynthesis

Explanation:

An endothermic reaction is any chemical reaction that absorbs heat from its environment. In photosynthesis, energy is absorbed from the sun to make glucose and oxygen.  

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Help in chem please!!!!!!
IgorLugansk [536]

This is a one-step unit analysis problem.  Since we are staying in moles, grams of our compound, and thus molar mass, is not needed.

1 mole is equal to 6.022x10²³ particles as given, so:

1.5x10^{24} particles FeO_{2} (\frac{1mol}{6.022x10^{23}particles } )=2.49 molFeO_{2}

<h3>Answer:</h3>

2.49 mol

Let me know if you have any questions.

3 0
3 years ago
1
Effectus [21]

Answer:

There are 5! goodluck,

Explanation:

4 0
2 years ago
Which of the following molecules would you expect to have a dipole moment of zero?
Mashcka [7]

Answer:

CCl2=CCl2

Explanation:

Recall that the individual dipole moments in a symmetrical molecule cancel out each other thereby making the overall molecule to be non polar.

CCl2=CCl2 contain individual polar bonds but the molecule is highly symmetrical thus its dipole cancel out and the molecule has no overall dipole moment, hence CCl2=CCl2 has a dipole moment of zero .

6 0
4 years ago
How would the freezing point of seawater compare with that of pure water? a)higher b) lower c) the same d) ten times higher
melamori03 [73]
The answer would be B) Lower, because pure water freezes at 32 degrees Fahrenheit whereas salt water freezes at 28.4 degrees Fahrenheit. Hopefully this helps!
4 0
3 years ago
Read 2 more answers
Find the % by mass of the solute in 129.54 g C6H1206 in 525 g H20.
belka [17]

Answer:

19.79%

Explanation:

mass % = (mass solute / total mass) * 100

total mass = 129.54 + 525 = 654.54

solute = C6H12O6

(129.54/654.54) = .1979

.1979 * 100 = 19.79%

7 0
3 years ago
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