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
Nostrana [21]
3 years ago
8

How do you know that a combustion reaction is exothermic

Chemistry
1 answer:
kap26 [50]3 years ago
5 0
When you burn wood it gives off heat. that heat is what makes the combustion reaction exothermoc
You might be interested in
Calculate the number of total atoms in 195 grams of Ni(OH)2.
Anni [7]

1.267 x 10 ^ 24 is the total number of atoms

6 0
3 years ago
The lecturer compared the humans eye to a camera lens
Ilya [14]
An analogy is the closest way to compare something to another that may not be related so that would be my pick. If that’s not it I guess he could maybe be making an observational opinion about it? Good luck hope this helped. Analogy
5 0
3 years ago
What does mufasa mean when he says we are all connected in a circle of life?
Paul [167]

Answer:

Prior to his death, Mufasa explains to Simba that “when we die, our bodies become the grass, and the antelope eat the grass, and so we are all connected in the great circle of life” . This is an ecological metaphor that goes beyond the human experience, intertwining the supernatural and physical world.

Explanation:

8 0
3 years ago
Read 2 more answers
Strontium, a group 2 element with an electron configuration of 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 , will form a _____
amid [387]

Answer:

Strontium, a group 2 element with an electron configuration of 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² , will form a +2 ion in a chemical bond.

Explanation:

An ionic bond is produced between metallic and non-metallic atoms, where electrons are completely transferred from one atom to another. During this process, one atom loses electrons and another one gains them, forming ions. Usually, the metal gives up its electrons forming a cation to the nonmetal element, which forms an anion.

So an ion is an atom or group of atoms that have an electric charge. A cation is an ion that has a positive charge.

The alkali metals in the earth (Elements IIA) lose two electrons to form a 2+ cation. Strontium is an alkali metal that loses the two electrons belonging to 5s², forming the +2 ion.

5 0
3 years ago
A 25.0-mL sample of 0.100M Ba(OH)2(aq) is titrated with 0.125 M HCl(aq).
morpeh [17]

Answer:

20.0

Explanation:

NaOH = (25.0) (0.100m) \ 0.125M = 20.0mL

8 0
3 years ago
Other questions:
  • List three methods of radiometric dating, and
    11·1 answer
  • What can be determined from the frequency and wavelength of a wave?
    5·1 answer
  • a scientist mixes to clear substances together and notices the following about the final solution it is cloudy some bubbles are
    6·1 answer
  • The following picture shows a change in the nitrogenous bases that serve as the code in a DNA molecule. This sequence codes for
    14·1 answer
  • How many molecules are present in a sample of carbon dioxide, CO2 with a mass of 168.2?
    10·1 answer
  • when 0.863 mol acetone is dissolved in 500 g benzene, the freezing point of benzene drops 8.84°C. what is the molal freezing poi
    13·1 answer
  • Coal, oil (petroleum), and natural gas are used as fuel. The
    5·1 answer
  • OOF OOF OOF OOF OOF OOF OOF OOF OOF
    15·2 answers
  • Which substance is a mixture?<br> table salt<br> gasoline<br> aluminum<br> carbon dioxide
    15·2 answers
  • What was johann dobereiner contribution to the periodic table
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!