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
AnnyKZ [126]
2 years ago
15

What is the enthalpy in KJ of reaction for the initial combustion if the delta H for vaporization is 75.75 KJ and the net delta

H is -700 kJ?
Write your answer to hundredths, including a negative sign if needed. Do not write the unit.
Chemistry
1 answer:
Gnesinka [82]2 years ago
4 0

Answer:

-775.75

Explanation:

You might be interested in
When water droplets in a cloud combine, become too heavy, and fall to the ground as rain, snow, sleet, or hail, we are experienc
tatiyna

Answer:

precipitation

Explanation:

7 0
3 years ago
Read 2 more answers
A dunk tank holds 550,200 grams of water. How many moles of water are in the tank?
Novosadov [1.4K]

Answer:

Aà bhûtÿ ñhjkjłfd hÿrèërqw

Explanation:

8 0
2 years ago
A sample of aluminum is placed in a 25-ml graduated cylinder containing 10.0 ml of water. the level of the water rises to 18.0 m
OLga [1]
To determine the mass of the sample, first find the volume difference after and before the aluminum was placed, the volume change is equal to the volume of the submerged object, in this case aluminum.

Then knowing volume of aluminum and the density of it, we can solve for the mass.

D = m/v

Dv = m

2.7 g/ml • 8 ml = 21.6 grams.
5 0
3 years ago
Read 2 more answers
What is the pH of a solution with a concentration of 1.8 × 10-4 molar H3O+?
Andre45 [30]
PH is defined as the negative log of Hydrogen ion concentration. Mathematically we can write this as:

pH=-log[H^{+}]=-log[H_{3}O]

We are given the concentration of H_{3}O. Using the value in formula, we get:

pH=-log[1.8*10^{-4}]=3.745

Therefore, the pH of the solution will be 3.745
8 0
3 years ago
A) An iron nail is attracted to a magnet.
11111nata11111 [884]

there's no question on here

4 0
2 years ago
Read 2 more answers
Other questions:
  • If a feather was trapped in mud and the impression was preserved over time, a(n) _________ fossil would be formed.
    12·2 answers
  • Burning biomass _____. releases fewer toxins than coal releases more toxins than natural gas is a nonrenewable energy source doe
    13·2 answers
  • Increasing the temperature of a chemical reaction increases the reaction rate. Write a statement that explains why this happens.
    5·2 answers
  • A solution contains 42.0 g of heptane (C7H16) and 50.5 g of octane (C8H18) at 25 ∘C. The vapor pressures of pure heptane and pur
    11·1 answer
  • Which phrase describes the purpose of today’s wind farms ?
    11·1 answer
  • The metric system is also known as the
    13·2 answers
  • Which characteristic influences the polarity of these molecules?
    8·1 answer
  • In a nonpolar covalent bond,
    12·2 answers
  • Explain how a trait is passed down from one generation to the next
    14·2 answers
  • Write the uses of Ions .​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!