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
vladimir1956 [14]
3 years ago
7

Select all the correct location on the image.

Chemistry
1 answer:
svetoff [14.1K]3 years ago
7 0

Answer:

the singler dots know as neutrons so the 4 singler dots

Explanation:

You might be interested in
 what is 19.8-17.1
Ostrovityanka [42]

Answer: it should be 2.8

Explanation:

7 0
3 years ago
Read 2 more answers
What is the empirical formula of a compound that is 24.42 % calcium, 17.07 % nitrogen, and 58.5% oxygen?
REY [17]

Answer:

CaN_{2} O_{6}

Explanation:

When calculating an empirical formula from percentages, assume you have a 100g sample. This allows you to convert the percentages directly to grams, because X % of 100g is X grams.

So:

24.42 % = 24.42 g Ca, 17.07% = 17.07g N, 58.5% = 58.5g O

The next step is to divide each mass by their molar mass to convert your grams to moles.

24.42/40.08 = 0.6092 mol

17.07/14.01 = 1.218 mol

58.85/15.99 = 3.680 mol

Then you will divide all of your mol values by the SMALLEST number of moles. This gives you whole numbers that are the mole ratio (subcripts) of the empircal formula.

0.6092 mol/0.6092 mol = 1

1.218 mol/0.6092 mol = 2

3.680 mol/0.6092 mol = 6

So the empirical formula is CaN_{2} O_{6}

5 0
3 years ago
A certain first order reaction has a half-life of 54. 3 s. How long will it take (in s) for the reactant concentration to decrea
Maksim231197 [3]

Answer:

82.4 s

Explanation:

Find the NUMBEr of half lives...then multiply by 54.3

2.27 = 6.5 (1/2)^n

log (2.27/6.5) / log (1/2) = n = 1.52 half lives

1.52 * 54.3 = 82.4 s

8 0
1 year ago
The freezing point of pure chloroform is -63.5°C, and its freezing point depression constant is 4.07°C•kg/mol. If the freezing p
Nady [450]

Answer:

-20.22

Explanation:

4 0
3 years ago
How many moles of CO2 are produced when 3.3 moles of C2H2 react
xxTIMURxx [149]
<span>To solve this exercise you need to know that to create CO₂ with C₂H₂ is necessary to have oxygen. So, the following balanced equation represents the reaction:
2C₂H₂(g) + 5O₂(g) → 4CO₂(g) + 2H₂O(g)

Notice that 2 moles of C₂H₂ form 4 moles of </span><span>CO₂, so if </span>3.3 moles of C₂H₂ react, how many moles of CO2 would be produced?
2 moles <span>of C₂H₂ -------</span>4 moles of <span>CO₂
3.3 </span><span>moles <span>of C₂H₂--------x moles of CO₂
x=6.6  </span></span><span>moles of CO₂ produced.</span>
5 0
3 years ago
Other questions:
  • A roast beef weighs 5.65 kilograms. how many grams does it weigh?
    13·2 answers
  • Which is larger, 51.5 decigrams or 51,500 decigrams
    5·1 answer
  • As a chemical reaction occurs, the thermometer in the container records an increase in temperature. What is true of the reaction
    9·2 answers
  • Match each section of the atomic structure
    10·2 answers
  • Construct a three-step synthesis of 1,2-epoxycyclopentane from cyclopentanol by dragging the appropriate formulas into the bins.
    8·1 answer
  • How many ml of 0.500 m naoh would be required to exactly neutralize 220.0 ml of 0.150 m hcl?
    14·1 answer
  • Calculate the molarity of a 10.0% (by mass) aqueous solution of hydrochloric acid.
    9·1 answer
  • Consider 55 mL of water (H2O) in a beaker and 55 mL of acetone [(CH3)2CO] in an identical beaker under identical conditions. Com
    12·1 answer
  • HELP PLEASE
    7·1 answer
  • does anyone know the three answers Question 1 which element is in group 5 period 2?, question 3 which element is in group 6 peri
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!