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
Artyom0805 [142]
2 years ago
5

Use Hess's Law and equations B and C to find the enthalpy change for equation A. A) 2 C2H4 + H2O à C4H9OH ΔH = ??? B) 2 C2H4 + 6

O2 à 4 CO2 + 4 H2O ΔH = -2822.2 kJ C) 4 CO2 + 5 H2O à C4H9OH + 6 O2 ΔH = 1534.7 kJ
Chemistry
1 answer:
Mariulka [41]2 years ago
4 0

Answer:

It's B

Explanation:

You might be interested in
What was the slope of the best fit line<br>​
lions [1.4K]

Answer:

sorry I don't really know

5 0
2 years ago
Read 2 more answers
How can you tell if a chemical equation is balanced
k0ka [10]

Answer:

A chemical equation is balanced when the number of each kind of atom is the same on both sides of the reaction.

Explanation:

    The law of conservation of matter (except in nuclear reactions) indicates that atoms can neither be created or destroyed.

    The number of atoms that are in the  reactants must be the same as the number of the atoms that are in the product.

    The number and types of molecules can (and will) change. The atoms that make up the molecules are rearranged but the number and kinds of atoms stay the same.  

3 0
3 years ago
What two elements are used to make a laser pen light?
irina1246 [14]

Answer:

Helium and Neon

Explanation:

6 0
2 years ago
The number of waves that pass a point in one second is called ________________________________
almond37 [142]
<span>The characteristics of a wave are given certain names to describe them, and this helps scientists to accurately describe any given wave. The characteristic known as frequency describes the number of waves that pass a point, and it is measured in waves per second, or Hertz, which is given the symbol Hz, but can also be described using the inverse of the SI unit for second, s^-1.</span>
3 0
3 years ago
What would you need to do to calculate the molality of 10 g of NaCl in 2 kg of
jasenka [17]

Answer:

O B. Convert the 10 g of NaCl to moles of NaCl.

Explanation:

The formula for finding the molality is m=moles of solute/kg of solvent. The solute for this question is NaCl and the solvent is water.

(10g NaCl)(1 mol NaCl/58.44g NaCl)=0.1711 mol NaCl

58.44 is the molar mass of NaCl

m=0.1711 mol NaCl/2 kg H2O

m=0.085557837

7 0
3 years ago
Other questions:
  • Which type of matter is composed or two or more elements that are chemically combined in a fixed proportion?
    7·1 answer
  • How many traditional areas of study can chemistry be divided into
    9·1 answer
  • For each reaction, write the chemical formulae of the oxidized reactants in the space provided. Write the chemical formulae of t
    10·1 answer
  • For rxn 1, 10.0 mL of a Cu2+ solution of unknown concentration was placed in a 250 mL Erlenmeyer flask. An excess of KI solution
    13·1 answer
  • If the lead concentration in water is 1 ppm, then we should be able to recover 1 mg of lead from _____ L of water.
    15·1 answer
  • What is the molar mass of CHCl3?
    13·1 answer
  • Which element is placed in the same period as ruthenium but has a higher atomic number than it?
    5·1 answer
  • A balloon contains 3.20 L of helium. The pressure is reduced to 59.0 kPa, and the
    13·1 answer
  • What is the final concentration when 5 ml of a 2.5M copper sulphate solution is diluted to 750 ml?
    10·1 answer
  • PLS HELP ME, use the periodic table to write the electron configuration of selenium
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!