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
Gemiola [76]
3 years ago
15

How do you detemine the charge of an element based on jts valence electrons

Chemistry
1 answer:
mafiozo [28]3 years ago
8 0
Look at the protons and electrons and rememeber metals want to get rid of electrons to be perfect. Nonmetals are wanting to take in. Metals are negatives in electrons. Opposite for nonmetals. 
You might be interested in
Someone pls help with this
Anettt [7]
Question 3 is uniformitarianism
Question 4 is sedimentary rock
5 0
3 years ago
What is the Ka of a 0.0796 M solution of nitrous acid (HNO2) with a pH of 2.95?
Vadim26 [7]

Answer:

Coefficient = 1.58

Exponent = - 5

Explanation:

pH = 2.95

Molar concentration = 0.0796M

Ka = [H+]^2 / [HA]

Ka = [H+]^2 / 0.0796

Therefore ;

[H+] = 10^-2.95

[H+] = 0.0011220 = 1.122 × 10^-3

Ka = [H+] / molar concentration

Ka = [1.122 × 10^-3]^2 / 0.0796

Ka = (1.258884 × 10^-6) / 0.0796

Ka = 15.815 × 10^-6

Ka = 1.58 × 10^-5

Coefficient = 1.58

Exponent = - 5

4 0
3 years ago
125 ml of nitrogen gas is collected at 70.0 degrees Celsius. The pressure
dybincka [34]

Answer: Volume of the gas at STP is 22.53 L.

Explanation:

Given : Volume = 125 mL   (as 1 mL = 0.001 L) = 0.125 L

Temperature = 70^{o}C = (70 + 273) K = 343 K

Pressure = 125 kPa = 125 kPa \times \frac{0.01 atm}{1 kPa} = 1.25 atm

According to the ideal gas equation, the volume of given nitrogen gas is calculated as follows.

PV = nRT

where,

P = pressure

V = volume

n = number of moles

R = gas constant = 0.0821 L atm/mol K

T = temperature

Substitute the values into above formula as follows.

1.25 atm \times V = 1 mol \times 0.0821 L atm/mol K \times 343 K\\V = \frac{1 mol \times 0.0821 L atm/mol K \times 343 K}{1.25 atm}\\= \frac{28.1603}{1.25} L\\= 22.53 L

Hence, volume of the gas at STP is 22.53 L.

5 0
3 years ago
Which of these is the ionic compound?
ale4655 [162]

Answer:

RbF

mgo

nh4cl

because electrons are lost by and element forming a cation and gained by the other element forming an anion and held together by electrostatic forces

5 0
3 years ago
Humans depend on ecosystems for ecosystem services and
Setler [38]

Explanation:

ok, forest ecosystem always recycle its resources;

dead animals are always returned to the ground, providing fertility of trees & other vegetation for the animals that consume its harvest...this ecosystem provides natural remedies for human ailments, rich soil provides farming, and re using of such, as long as it is not over harvested. The Indians that live there have vast knowledge of their surroundings...

4 0
3 years ago
Other questions:
  • The main compound used to release energy for metabolism is ________.
    7·1 answer
  • What is the half-life of a radioisotope if 25.0 grams of an original 200.-gram sample of the isotope remains unchanged after 11.
    7·2 answers
  • Calculate the concentration of a solution that has 6.7 moles in a volume of 0.6 liters.
    13·1 answer
  • When 2.00 g of methane are burned in a bomb calorimeter, the change in temperature is 3.08°C. The heat capacity of the calorimet
    7·1 answer
  • HELP I’ll give Brainliest
    10·1 answer
  • By the way...... what do those symbols for the elements have in common (for number 7-11): Pb, Au, Cu, Hg, Na ? *
    9·2 answers
  • 2.00g of Copper wire was added to 50.0 mL of a 0.050M solution of Silver Nitrate. The reaction
    13·1 answer
  • If x represents the molar solubility of Ca(OH)2 , what is the correct equation for the K sp ?
    5·1 answer
  • Solid iron combines with oxygen gas to form solid iron(III) oxide. Which of the following equations best describes this reaction
    14·1 answer
  • Which option contains a correct statement about the size of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!