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
Bess [88]
3 years ago
5

What is the defining characteristic of an exothermic reaction.

Chemistry
1 answer:
xenn [34]3 years ago
7 0
Heat gets given off or emitted during the reaction
Hope this helps and don’t forget to mark as brainliest if you thought it was most helpful :)
You might be interested in
3 Cu
eduard

Answer: 1.1 moles H2O

Explanation: It looks like the equation is already balanced for you, so the first step will be to convert 144.1 grams of HNO3 to moles. To do this find the molar mass, and use to to do your conversion.Using the numbers provided for mass, this is the equation:1(1.0) + 1(14) + 3(16) = 1 + 14 + 48 = 63 g/mol144.1 g HNO3  x   1 mol HNO3     =  2.287 mol HNO3                              63 g HNO3Now that you know how many moles of HNO3  you're starting with, use the ratio of moles in the equation to find the moles of H2O produced. The coefficient of HNO3 is 8, and H2O is 42.287 mol HNO3  x    4 mol H2O     =  1.144 mol H2O                               8 mol HNO3

4 0
2 years ago
Do metals donate or accept electrons? what do they become after they donate/accept electrons?
valentinak56 [21]
Metal usually donates electrons. The concept behind this phenomenon is stability. The elements with the most stable electronic configuration are the noble gases in Group 5A. As a result, the other elements donate or accept electrons so that they would be like the noble gases. Since metals are past their nearest noble gas element, they have to shed their electrons. When they do, they become cations which are positively charged ions.
8 0
3 years ago
3 Points
svp [43]

Answer:

C. Splitting the atom

Explanation:

splitting the atom involves fission

4 0
3 years ago
Read 2 more answers
You set up an experiment to determine the conditions needed to form the gemstones with the most clarity. You gather data from 5
Andreyy89
I’m in chemistry too. Giving this my best guess I’d say
Independent: Gem Mines
Dependent: Gem clarity
Controlled: Temperature
6 0
3 years ago
Read 2 more answers
Uranium is a metallic element that is used in nuclear reactors and nuclear weapons. the vast majority of uranium found on earth
katrin [286]
There will be 143 neutrons in uranium-235
7 0
3 years ago
Other questions:
  • Maple syrup, which comes from the sap of maple trees, contains water and natural sugars. It's a clear, brown liquid and the suga
    15·1 answer
  • What are the three steps scientist take to evaluate a scientific explanation
    8·1 answer
  • What volume of .100 M HCl is required to titrate .100 g of sodium bicarbonate to its equivalence point?
    15·2 answers
  • Gold has a density of 19.32 g>cm3. A piece of gold foil is 2.50 cm on each side and 0.100 mm thick. How many atoms of gold ar
    14·1 answer
  • How does heat energy spontaneously move?
    12·1 answer
  • The number of protons in an atom is known as its atomic
    5·1 answer
  • I need help with my worksheet
    8·1 answer
  • Nitrogen is collected over water until a volume of 2.0 liters had been obtained. The room pressure is 740mm and the temperature
    12·1 answer
  • How do I solve this ?
    14·1 answer
  • 2. A body was discovered in the woods. The man has been missing for two days. The
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!