Answer:
it is b because its releases heat in to all directions and not b because it staying inside and not releasing anything :)
Explanation:
Answer;
C) The solid has bubbles forming on its surface.
Explanation;
-Chemical reactions involves the reaction of reactants that involves rearrangement of their structure resulting to the formation of new substances.
-There are a number of common indicators that are used to show that a chemical reaction has taken place, namely;
- Change of color
- Change of Odor
- Change in temperature or energy
- Formation of precipitate
- Effervescence or formation of gas bubbles.
Answer:
The answer is
<h2>4.69 mL</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula
From the question
mass of wood = 4.6 g
density = 0.98 g/mL
It's volume is
We have the final answer as
<h3>4.69 mL</h3>
Hope this helps you
Answer:
Answers may vary
Explanation:
Mol is the amount of molecules in something. Mol are similar to donuts, if you have a dozen of something you have 12 of them. If you have a mol of Hydrogen gas you 6.02•10^23 molecules of Hydrogen gas. If you are taking a chemistry class you will probably receive questions involving converting grams to mol and vice versa.
Converting Grams to Mol:
grams of x•(1/molecular mass of x)
note: you can find molecular mass of x by looking at the masses of the elements you need to add up in the periodic table
Converting Mol to Grams:
mol of x•(molecular mass of x)
Answer:
The answer to your question is: a, b and c
Explanation:
A.) Matter has mass. this option is correct, matter is formed by mass.
B.)Matter has volume (takes up space). this option is correct, matter takes up space.
C.)Atoms and compounds are made out of matter. This option is correct, all atomsand compounds are made out of matter.
D.) All matter has the same density. This optio is wrong, matter of different elements or compounds have different density.
