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
denis-greek [22]
3 years ago
15

Which elements have two valence electrons?

Chemistry
1 answer:
lora16 [44]3 years ago
7 0

Answer:

Magnesium

Explanation:

Magnesium is in group 2 of the periodic table. The group in which an element is found in tells us the number of valence eletrons it has.

HOPE THIS HELPED

You might be interested in
Which of the following is a physical change?
Anit [1.1K]
I’m pretty sure cooking an egg could be it
8 0
2 years ago
Which of the following is the most likely impact of clearing natural landscape to construct high-rise buildings?
Salsk061 [2.6K]

Answer:

the abundance of non-native plants. this MAY be right.

Explanation:

i thought it would be an increase in pollution.

7 0
2 years ago
The pressure exerted by 1.5 mol of gas in a 13 L flask at 22 °C is ____ kPa
sukhopar [10]

Answer:

282.7KPa

Explanation:

Step 1:

Data obtained from the question.

Number of mole of (n) = 1.5 mole

Volume (V) = 13L

Temperature (T) = 22°C = 22 + 273°C = 295K

Pressure (P) =..?

Gas constant (R) = 0.082atm.L/Kmol

Step 2:

Determination of the pressure exerted by the gas.

This can be obtained by using the ideal gas equation as follow:

PV = nRT

P = nRT /V

P = 1.5 x 0.082 x 295 / 13

P = 2.79atm.

Step 3:

Conversion of 2.79atm to KPa.

This is illustrated below:

1 atm = 101.325KPa

Therefore, 2.79atm = 2.79 x 101.325 = 282.7KPa

Therefore, the pressure exerted by the gas in KPa is 282.7KPa

8 0
2 years ago
Is a covalent bond the same as an atomic compound? Please explain why and if not, please explain the difference.
dezoksy [38]
In an ionic bond, one atom essentially donate an electron to stabilize the other atom. A molecule bond is made when two or more atoms form a chemical bond, linking them together. The two types of bonds are ionic bonds and covalent bonds.
6 0
3 years ago
Calculate the average reaction rate of Cl2 consumed using the following information. H2 + Cl2 yields 2 HCl A table with three co
klemol [59]
Answer : Option D) 2.50 X 10^{-3} Mol/(L s)

Explanation: While calculating the average reaction rate for the given reaction in terms of Cl;

H_{2} + Cl_{2}  ----\ \textgreater \  2HCl.

using the rate equation which is;

\frac{-1}{1}\frac{delta [Cl]}{delta t} = 

\frac{- 0.0875 - 0.0625}{10s - 0s} = 2.50 X 10^{-3} Mol/(L s)
5 0
3 years ago
Other questions:
  • A certain mass of gàs occupied 5.0dm cube at 2 atm and 10°C .calculate d no of moles present​
    14·1 answer
  • Convert 32.56 km/hr into ft/hr
    12·1 answer
  • An ice cube is placed on a kitchen counter. Which best describes heat flow in this situation
    6·2 answers
  • Which change would increase the pressure exerted by a gas?
    11·1 answer
  • A gas absorbs 10J of heat and is simulataneously comptessed by a constant external pressure of 0.5atm from 4L to2L in volume.Wha
    13·1 answer
  • A standard backpack is approximately 30cm x 30cm x 40cm. Suppose you find a hoard of pure gold (density = 19.3 g/cm3) while trea
    11·1 answer
  • What is the energy content in joules of a 1.28g sample of oatmeal that raises the temperature of 1.50 kg of water in a calorimet
    13·1 answer
  • Standard reduction potentials are based on which element?
    5·1 answer
  • The density of table salt is 2.16 g/cm3. Detail the conversion into units of pounds per liter, and provide the density in lb/L.
    12·1 answer
  • What is the mass of 2.15 moles of calcium hydroxide, Ca(OH)2?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!