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
Ganezh [65]
2 years ago
9

Which is true of the enthalpy of a reaction?

Chemistry
1 answer:
salantis [7]2 years ago
6 0

Answer: I think it's B

You might be interested in
Which type of bond does this molecule show?
Gekata [30.6K]
The correct answer is D. magnetic bond
5 0
2 years ago
The process by which a semipermeable membrane allows water molecules, small molecules, and ions to pass through while retaining
Jet001 [13]
The process is know as diffusion in which substances move from higher concentration to lower concentration
5 0
3 years ago
Which occurs during summer in the Northern Hemisphere? A. The earth is closer to the sun. B. The earth's axis is tilted so that
Margarita [4]
The answer is B. The earth's axis is tilted so that the Northern Hemisphere faces the sun. Hope this helps and good luck! :)
6 0
3 years ago
Suppose a student titrates a 10.00-ml aliquot of saturated ca(oh)2 solution to the equivalence point with 16.08 ml of 0.0199 m h
Alborosie
Following chemical reaction is involved upon titration of Ca(OH)2 with HCl,
Ca(OH)2 + 2HCl ↔ CaCL2 + 2H2O

Above is an example of acid-base titration to generate salt and water. Here, H+ ions of acid (HCl) combines with OH- (ions) of base [Ca(OH)2] to generated H2O

Given,
concentration of HCl = 0.0199 M
Total volume of HCl consumed during titration = 16.08 mL = 16.08 X 10^(-3) L

∴, number of moles of H+ consumed = Molarity X Vol. of HCl (in L)
                                                           = 0.0199 X 16.08 X 10^(-3)
                                                           = 3.1999 X 10^-4 mol
Thus, total number of moles of [OH-] ions present initial = 3.1999 X 10-4 mol
So, initial conc. [OH-] ion = 
\frac{number of moles of [OH-]}{volume of solution (L)} = \frac{3.1999 X 10^(^-^4^)}{10 X 10^(^-^3^)} = 0.03199 M
6 0
3 years ago
7. If you constructed graphs, what trends do they indicate in your data?
lisabon 2012 [21]
A tend line I believe (I am going off the other guy cause they are right.)
4 0
2 years ago
Other questions:
  • Which of the following is not a concentration unit (a) 1 molar (b) 1 equivalent (c) 1% by mass (d) 1 molal
    6·1 answer
  • How many atoms are present in 3.14 grams of copper(Cu)?
    12·1 answer
  • A 50 g piece of aluminum is heated to 800c and then dropped into cold water, where the metal's temperature drops to 300c.how man
    12·1 answer
  • Give an example of a purely physical change and an example of a chemical change
    8·1 answer
  • Can someone PLEASE help me with this problem, I’ve tried it multiple times and keep getting it wrong :(
    7·1 answer
  • If a sample of cork has a mass of 2.88 g and a volume of 12.0 mL, what is the density of the cork? Show your work.
    6·1 answer
  • 1. HBr+KOH=? +H2O<br><br> 2. H2SO4+?= (NH4)2SO4 + 2H2O<br><br> 3. ? + Mg(OH)2=Mg(NO3)2+2H2O
    6·1 answer
  • As you are researching the Zebra Mussel, keep in mind the following questions. 1. Where is this organism found? 2. How was this
    12·1 answer
  • 10. Benzene deactivating group is:<br>a. -OH<br>b. --CH3<br>c. -C2Hs<br>d.-CI​
    15·1 answer
  • The molar mass of water (H2O) is 18. 0 g/mol. A sample of water has a mass of 18. 0 g. How many moles of water are contained in
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!