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
iVinArrow [24]
3 years ago
12

Give at least two ways to know if a reaction is endothermic or exothermic

Chemistry
1 answer:
mafiozo [28]3 years ago
5 0

Answer:

An exothermic reaction is a chemical reaction that releases energy by light or heat. Endothermic reaction is a chemical reaction that absorbs energy or heat from its surroundings

Explanation:

You might be interested in
This condition affects more than 25 million Americans. Often triggered by allergies, this condition causes a constriction of the
gregori [183]
Common sense tells me that it is asthma cause i have it and yeah good luck
8 0
2 years ago
 HELP ASAP!!!!!
Sedaia [141]
B) <span>It is the instantaneous speed of the bike rider.</span>
6 0
3 years ago
Read 2 more answers
PLEASE HELP ME
ki77a [65]

Answer:

1.15 atm

Explanation:

According to Dalton's law of partial pressures, the total pressure is the sum of all the partial pressures of the gases present in the mixture.

Therefore we have:

Total pressure = partial pressure of carbon monoxide + partial pressure of oxygen + partial pressure of carbon dioxide

We were given the following:

Total pressure = 2.45 atm

Pressure of oxygen = 0.65 atm

Pressure of carbon monoxide = x

Pressure of carbon dioxide = 0.65 atm

Therefore:

2.45 = x + 0.65 + 0.65

2.45 = x + 1.3

x = 2.45 - 1.3

x = 1.15 atm

6 0
3 years ago
Which types of reactions would result in a change in temperature?
Law Incorporation [45]

Answer:

Chemical reaction involves the breaking of bonds in the reactants and formation of bonds in the products. ... If a reaction is exothermic, more energy is released when the bonds of the products are formed than it takes to break the bonds of the reactants. This is the reason for temperature change during a reaction.

Explanation:

Here are just a few everyday demonstrations that temperature changes the rate of chemical reaction: Cookies bake faster at higher temperatures. Bread dough rises more quickly in a warm place than in a cool one.

6 0
3 years ago
What is produced when calcium reacts with fluorine in a synthesis reaction?
Thepotemich [5.8K]
C is the correct answer (CaF2) (sorry dont have subscript)

Explanation: synthesis reaction forms a compound and calcium reacting with fluorine produces Calcium Fluoride (CaF2) chemical name
4 0
3 years ago
Read 2 more answers
Other questions:
  • Consider the elements in Group 14. Which element has the highest electron affinity? A) Carbon B) Germanium C) Lead D) Silicon
    6·1 answer
  • Calculate delta g reaction at 298 k under the conditions 2hg+o2
    10·1 answer
  • What type of compound does the formula, CO2, represent?<br> a. ionic salt<br> b. covalent molecule
    5·2 answers
  • 1. Convert 1365.4 joules into kilocalories.
    13·1 answer
  • You spot a friend walking on a moving walkway in an airport. You are not on the walkway and you want to keep up with her.
    13·1 answer
  • 1. The brilliant red colors seen in fireworks are due to the emission of light
    12·1 answer
  • What’s is a logical way that you could begin to investigate why your tire had low air pressure?
    13·1 answer
  • How many square centimeters are in an area of 9.90 inch2 ?
    5·1 answer
  • Isotopes of the same element have a different number of ______​
    14·1 answer
  • What is the molarity of a solution with 55 grams of CaCL2 dissolved in. 78 L of water?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!