Answer: C.)
Explanation:
i got it right on a unit test!
but it might be something else if there arranged different!
sorry!
I don’t understand the question
Answer:
Work done=50J
Heat removed=29J
Now
Hence the internal energy would decrease by 21J
A chocolate chip cookie is a good example of a heterogeneous mixture. A mixture is a physical combination of two or more different pieces of matter.
Answer:
18.0g of glucose are needed
Explanation:
Molarity, M, is an unit of concentration widely used in chemistry. Is defined as the ratio between moles of solute (In this case, glucose) and liters of solution (50mL = 0.050L).
To solve this question we must find the moles of glucose that we need to prepare the solution. Then, using the molar mass of glucose (180.156g/mol) we can find the mass that we need:
<em>Moles Glucose:</em>
0.050L * (2.0mol / L) = 0.100 moles Glucose
<em>Mass glucose:</em>
0.100moles Glucose * (180.156g / mol) = 18.0g of glucose are needed
