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
dsp73
2 years ago
5

which of the following enthalpy diagrams represent exothermic reactions? Endothermic reactions? please state which one each diag

ram is.​

Chemistry
1 answer:
Wittaler [7]2 years ago
5 0

Answer:

a,c and d are exothermic

b is the endothermic

Explanation:

exothermic because energy required to form products is less than the energy required to break bonds in reactants.

endothermic because energy required to form products is larger than the energy required to break bonds in reactants.

You might be interested in
Why is copper used to make hot water tanks not steel.
Makovka662 [10]
Copper does not react with hot water or steam
7 0
3 years ago
What is the wavelength (in nm) of
LenKa [72]

Answer:

λ = 0.45×10⁻⁶ m

Explanation:

Given data:

Wavelength of blue light = ?

Frequency of blue light = 6.69×10¹⁴ s⁻¹

Solution:

Formula;

Speed of wave = wavelength × frequency

Speed of wave = 3.00×10⁸ m/s

by putting vales,

3.00×10⁸ m/s = λ × 6.69×10¹⁴ s⁻¹

λ = 3.00×10⁸ m/s / 6.69×10¹⁴ s⁻¹

λ = 0.45×10⁻⁶ m

6 0
3 years ago
You find a compound composed only of element X and chlorine and you know that the compound is 13.10% X by mass. Each molecule of
8_murik_8 [283]

Answer:

Explanation:

So, the formula for the compound should be:

XCl_{6}

Now we assume that we have 1 mol of substance, so we can make calculations to know the molar mass of element X, as follows:

M_{Cl}=35.45g/mol\\

So we have that 6 moles weight 212.7g, and we can make a rule of three to know the weight of compound X:

212.7g\rightarrow 86.9\%\\x\rightarrow 13.1\%\\\\x=\frac{212.7g*13.1}{86.9} =32.06g

As we used 1 mol, we know that the molar mass is 32.06g/mol

So the element has a molar mass of 32.06 g/mol and an oxidation state of +6, with this information, we can assure that the element X is sulfur, so the compound is SCl_{6}

8 0
3 years ago
Which of the following is NOT a produce of the neutralization reaction between hydrochloric acid and sodium carbonate?
Tanya [424]
Hope this helps, have a nice day ahead!

4 0
4 years ago
Read 2 more answers
Do all forms of radioactive decay change the identity of the original element?
hoa [83]

Explanation:

<h3>yes, Radioactive decay involves the emission of a particle and/or energy as one atom changes into another. In most instances, the atom changes its identity to become a new element.</h3>

5 0
2 years ago
Other questions:
  • Assuming you start with 10.0 g of zinc and 10.0 g hydrochloric acid, identify the limiting reagent and determine what mass of th
    5·1 answer
  • A solution of NaCl has a concentration of 1.50 M. The density of the solution is 1.06 g/mL. What is the concentration solution b
    15·2 answers
  • What is the balanced equation for: Ammonium Carbonate and Magnesium Sulfate react to yield Ammonium Sulfate plus Magnesium Carbo
    5·1 answer
  • How to determine is an alcohol has strong or weak intermolecular forces?
    9·1 answer
  • Can single atoms be seen with a powerful light microscpe
    14·1 answer
  • 1. A sample of argon at a pressure of 785 mm Hg is transferred from a 125 ml dask to a 15 ml
    11·1 answer
  • Both the volcano and the seamount chain are thought to be the result of
    12·1 answer
  • Please answer this question about chemistry ASAP I NEED HELP
    13·1 answer
  • CH4 + 202 → CO2 + 2H2O<br> How many grams of O2 produced from 2 moles of H20?
    7·2 answers
  • Why is zinc not extracted from ZnO through reduction using CO?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!