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
daser333 [38]
2 years ago
8

. Which of the following statements about noble gases is NOT true?

Chemistry
2 answers:
WARRIOR [948]2 years ago
7 0

Answer:

d, All of them are found in Earth's atmosphere in small amounts

weqwewe [10]2 years ago
7 0
The answer is C, because they have no desire to react according to their complete set of electrons.
You might be interested in
Mn2+(aq) + nabio3(s) → bi3+(aq) + mno4−(aq) + na+(aq) how many water molecules are there in the balanced equation (for the react
stiks02 [169]
<span>
Mn²⁺ + 4H2O -----> MnO4⁻ + 8H⁺ +5e⁻                  /*2
<span>NaBiO3 +6H⁺ +2e⁻ -----> Bi³⁺ + Na⁺ + 3H2O        /*5
</span>2Mn²⁺ + 5 NaBiO3+8H2O+30H⁺ --->  2MnO4⁻ +5Bi³⁺ + 5Na⁺ +16H⁺ +15H2O

</span>2Mn²⁺ + 5 NaBiO3+14H⁺ --->  2MnO4⁻ +5Bi³⁺ + 5Na⁺  +7H2O

There are 7 water molecules in this reaction.
4 0
3 years ago
Read 2 more answers
Can anybody help me with these 2 ohms law
Fynjy0 [20]

Answer:

1

yywhhwhwhwysuiwjwcwcwfwhwuwiwioowow

3 0
3 years ago
Aspirin sun thesis Green Chemistry and Assime the aspirin is prepared by the following reaction and that 10.09. of salicylic aci
klemol [59]

<u>Answer:</u> The percentage yield of aspirin is 38.02 %.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}      .....(1)

  • <u>For salicylic acid:</u>

Given mass of salicylic acid (C_7H_6O_3) = 10.09 g

Molar mass of salicylic acid (C_7H_6O_3) = 138.12 g/mol

Putting values in equation 1, we get:

\text{Moles of salicylic acid}=\frac{10.09g}{138.12g/mol}=0.0730mol

The chemical equation for the formation of aspirin follows:

C_7H_6O_3+C_4H_6O_3\rightarrow C_9H_8O_4+CH_3COOH

As, acetic anhydride is present in excess. So, it is considered as an excess reagent.

Thus, salicylic acid is a limiting reagent because it limits the formation of products.

By Stoichiometry of the reaction:

1 mole of salicylic acid produces 1 mole of aspirin.

So, 0.0730 moles of salicylic acid will produce = \frac{1}{1}\times 0.0730=0.0730mol of aspirin

Now, calculating the mass of aspirin from equation 1, we get:

Molar mass of aspirin = 180.16 g/mol

Moles of aspirin = 0.073 moles

Putting values in equation 1, we get:

0.073mol=\frac{\text{Mass of aspirin}}{180.16g/mol}\\\\\text{Mass of aspirin}=13.15g

To calculate the percentage yield of aspirin, we use the equation:

\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100

Experimental yield of aspirin = 5.0 g

Theoretical yield of aspirin = 13.15 g

Putting values in above equation, we get:

\%\text{ yield of aspirin}=\frac{5.0g}{13.15g}\times 100\\\\\% \text{yield of aspirin}=38.02\%

Hence, the percent yield of aspirin is 38.01 %.

6 0
3 years ago
Calculate ΔGrxn for this equation, rounding your answer to the nearest whole number.
Dovator [93]

Answer:

-958 spontaneuos

Explanation:

7 0
3 years ago
Read 2 more answers
Help I’m stuck on this question :
Dimas [21]

Answer:

The first ionization energy is the energy it takes to remove an electron from a neutral atom.

hope it is helpful :)

8 0
3 years ago
Other questions:
  • How many molecules of SO2 are in 2.45 g of SO2? (molar mass=64.06 g/mol). (Hint: you need to use your entire stoichiometry flow
    6·1 answer
  • A teacher makes the following statement.
    9·2 answers
  • Recall the postulates of kinetic molecular theory read the list and check all the statements that apply to behavior of an ideal
    15·2 answers
  • Atmospheric pollution is the worst when: natural gas is burned coal is burned geothermal heat is used to generate electricity
    15·1 answer
  • What is the final temperature of the metal​
    12·1 answer
  • What energy is required for a reaction to occur?
    11·2 answers
  • What is benzene and alcohol
    15·2 answers
  • Round off 35.65 to three significant figures.<br><br><br> help
    12·1 answer
  • Ima 5% glucose solution, how many grams of glucose would be present per 100mL
    8·1 answer
  • Find the mean of the data.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!