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
Marrrta [24]
3 years ago
5

Which element has 19 electrons surrounding the nuclei of its atoms?

Chemistry
1 answer:
QveST [7]3 years ago
5 0
I think its potassium
You might be interested in
Zn +
saul85 [17]

Answer:

1. Theoretical yield = 2.03g

2. Actual yield 1.89g

Explanation:

Let us write a balanced equation. This is illustrated below:

Zn + 2HCI —> ZnCl2 + H2

Molar Mass of HCl = 1 +35.5 = 36.5g/mol

Mass of HCl from the balanced equation = 2 x 36.5 = 73g

Molar Mass of H2 = 2x1 = 2g/mol

1. From the equation,

73g of HCl produced 2g of H2.

Therefore, 74g of HCl will produce = (74 x 2)/73 = 2.03g

Therefore, theoretical yield = 2.03g

2. %yield = 93%

Theoretical yield = 2.03g

Actual yield =?

%yield = Actual yield /Theoretical yield x100

Actual yield = %yield x theoretical yield

Actual yield = 93% x 2.03 = (93/100)x2.03 = 1.89g

Actual yield =1.89g

4 0
3 years ago
What must take place for copper metal to be oxidized?
Oxana [17]
 <span>The copper would go under oxidation since it will be losing two electrons. Copper starts out with an oxidation number of zero, but in order to balance the compound of CuO with the Oxygen having an oxidation number of -2, a positive 2 is required</span>
6 0
2 years ago
At room temperature, one of the molecules is a gas and one is a liquid. Identify which structure is a gas and which is a liquid.
scoundrel [369]
It starts at the bottom and then it goes up into the air as evaporation and that’s when the air gets cooler so gas is cooler and the liquid would be hotter
4 0
3 years ago
Pls help it’s due at 12
likoan [24]

Answer:

it's

D. 2K + 2H2O

Explanation:

it just is

5 0
3 years ago
Write a balenced chemical equation for the reaction: include abbreviation for the physical states-
Nuetrik [128]

Answer:

2Na(s) + 2H2O(l) ------> 2NaOH(aq) + H2(g)

Explanation:

5 0
2 years ago
Other questions:
  • Which list consists of types of chemical formulas?
    15·1 answer
  • How does the Law of Conservation of Mass relate to changes in physical state? How does it relate to chemical changes?
    15·1 answer
  • Process of genetic engineering
    12·1 answer
  • Epsom salts is a hydrated ionic compound with the following formula: MgSO4⋅x H2O. A 4.93-g sample of Epsom salts is heated to dr
    8·1 answer
  • Two elements are more likely to be ionically bonded when ....
    5·1 answer
  • 8 DO
    8·1 answer
  • Atom A and Atom B have the same number of protons and neutrons, but they do not have the same number of electrons. ASAP
    6·1 answer
  • Calculate the amount of mole of iron produced from the reaction of 15.9 grams of iron oxide.
    12·1 answer
  • What is the name of Br6F10 ?
    10·1 answer
  • Which of the graphs below shows a person walking at a constant rate with no change in speed or velocity?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!