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
Alla [95]
3 years ago
15

Circle the atom with the largest atomic radius in each group

Chemistry
1 answer:
Dominik [7]3 years ago
4 0

Answer:

The atomic radius increases down the group because more shell are added

Explanation:

Al >B

Na>Al

S>O

O>F

Br>Cl

Mg>Ca

You might be interested in
An excess of oxygen reacts with 451.4 g of lead, forming 374.7 g of lead(II) oxide. Calculate the percent yield of the reaction.
Stels [109]

Answer: The percent yield of the reaction is 77.0 %

Explanation:

2Pb+O_2\rightarrow 2PbO

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

\text{Number of moles of lead}=\frac{451.4g}{207.2g/mol}=2.18moles

\text{Number of moles of lead oxide}=\frac{374.7g}{223.2g/mol}=1.68moles

According to stoichiometry:

2 moles of Pb produces = 2 moles of PbO_2

2.18 moles of Pb is produced by=\frac{2}{2}\times 2.18=2.18moles of PbO_2

Mass of PbO_2 =moles\times {\text {Molar mass}}=2.18\times 223.2g/mol=486.6

percent yield =\frac{374.7g}{486.6g}\times 100=77.0\%

3 0
2 years ago
How many moles is 90.93 grams of aluminum?
Rashid [163]

Answer:

C) 3.37 moles .

Explanation:

Hello,

In this case, considering that the atomic mass of aluminum is 27.0 g/mol, the moles in 90.93 g of aluminum are computed via the following dimensional analysis:

n=90.93 gAl*\frac{1molAl}{27.0gAl} \\\\n=3.37molAl

Thus, answer is C) 3.37 moles .

Best regards.

6 0
3 years ago
PLEASE HELP ASAP Nuclear power plants real ease energy by
sweet [91]
Nuclear power plants real ease energy by FISSION

(this is the process when a heavy, unstable atomic nucleus splits into 2 or more lighter elements. This process releases lots of energy.)

I hope this helped you out! :)
3 0
2 years ago
When placed in a freezer, liquid water turns into solid ice. Why is this considered a physical change?
HACTEHA [7]
Just the movement and game plan of the particles changes, not the personality of the substance.

3 0
3 years ago
The isotope of an atom containing 40 protons and 51 nuetrons suddenly has two nuetrons added to it. What isotope is created?
Burka [1]

The isotope of an atom containing 40 protons and 51 nuetrons suddenly has two nuetrons added to it. What isotope is created?

6 0
2 years ago
Read 2 more answers
Other questions:
  • What is the hydronium ion concentration in an aqueous hydrobromic acid solution with a pH of 4.530?
    10·1 answer
  • The same heat transfer into identical masses of different substances produces different temperature changes. Calculate the final
    14·1 answer
  • While 1 gram of fat provides 9 calories, 1 gram of glucose provides 4 calories. Why is that?
    8·1 answer
  • At a higher temperature, K = 1.8 × 105. Placing the equilibrium mixture in an ice bath (thus lowering the temperature) will
    9·1 answer
  • Helium gas in a cylinder is under 1.12atm pressure at 25.0C. What will be the pressure if the temperature increases to 37.0C?
    7·1 answer
  • 2CO (g) + O2 (g) → CO2 (g)<br><br> How many grams of O2 are needed to react with 6.64 L of CO2?
    9·1 answer
  • 2 points
    5·1 answer
  • if it takes 54 ml of 0.100 M naoh to neutralize 125ml of an hcl solution, what is the concentration of the hcl
    15·1 answer
  • What kind of radioactive element is useful for dating an object?
    10·1 answer
  • A children's liquid medicine contains 100 mg of the active ingredient in 5 mL. If a child should receive 150 mg of the active in
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!