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
cestrela7 [59]
3 years ago
8

Some one please help i am so stuck on these

Chemistry
1 answer:
Mariulka [41]3 years ago
5 0
The first one is d
second one is a
You might be interested in
How much energy is required to melt 35.4 g of gold?
kap26 [50]

Answer:

To determine the amount of heat the gold has absorbed to melt, we simply multiply the mass of the block of ice to the heat of fusion of water which is given above. We calculate as follows:

Heat = 20.0 g (35.4 g)

Heat = 1290 J

4 0
3 years ago
Which of the following compounds does NOT contain molecules?<br> O CO2<br> ОН2<br> O Naci<br> OH20
wel

Answer:

Explanation:

NaCl does not contain molecules

7 0
3 years ago
Read 2 more answers
How much is a dogggggggggggggggggg
skelet666 [1.2K]

Answer:

it is 7

Explanation:

dogs are 7 HOPE THIS HELPED kidding i don get the question

3 0
3 years ago
Read 2 more answers
What is the standard enthalphy change ΔHo, for the reaction represented above? (ΔHof of C2H2(g) is 230 kJ mol-1; (ΔHof of C6H6(g
wolverine [178]

Answer:

-608KJ/mol

Explanation:

3 C2H2(g) -> C6H6(g)

ΔHrxn = ΔHproduct - ΔHreactant

ΔHrxn= ΔHC6H6 - 3ΔHC2H2

ΔHrxn = 83 - 3(230)

ΔHrxn = -608

6 0
3 years ago
what pressure must be applied to compress a gas from 85 L at 3.5 atm to 15 L? a-17.3atm b-24.7atm c-19.8atm d-21.4atm
pychu [463]
A... I think ., not sure
5 0
3 years ago
Other questions:
  • How to solve partial pressure given water vapor pressure?
    10·1 answer
  • The compound mgso4, epsom salts, is used to soothe sore feet and muscles. how many grams will you need to prepare a bath contain
    11·2 answers
  • Hydrofluoric acid (hf) is used to etch glass (sio2). the products of the reaction are silicon tetrafluoride and water. write the
    15·2 answers
  • In the titration of 238.0 mL of a 5.60×10-2 M solution of acid H3A (Ka1 = 1.0×10-3, Ka2 = 5.0×10-8, Ka3 = 2.0×10-12), calculate
    13·1 answer
  • If you need to produce X-ray radiation with a wavelength of 1 Å. a. Through what voltage difference must the electron be acceler
    15·1 answer
  • Which is an example of how the body maintains homeostasis? by increasing thirst when cells are low on water by decreasing thirst
    12·2 answers
  • 4. Refine Your Plan Suppose you are mixing ingredients for bread, and
    14·1 answer
  • Four forces are exerted on each of the two objects shown below:
    8·1 answer
  • 2. Work is done only when an object.<br> in the<br> of the force<br> that is being applied.
    5·1 answer
  • as a bystander, the _______ approach doesn’t work when drugs or alcohol are involved, as the person you’re trying to stop is mor
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!