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
attashe74 [19]
3 years ago
13

What is the net ion charge of beryllium? +2 -2 +1 -1

Chemistry
2 answers:
miss Akunina [59]3 years ago
8 0
+2, because Beryllium is in the Group II of the periodic table.

Hope this helps!
Naddika [18.5K]3 years ago
5 0

Answer:

+2

Explanation:

You might be interested in
Calculate number of moles in 10.6g of sodium carbonate
natulia [17]
<em>m Na₂CO₃: 23g×2 + 12g + 16g×3 = 106 g/mol</em>
------------------------------
1 mol ------- 106g 
X ------------ 10,6g
X = 10,6/106
<u>X = 0,1 mol Na₂CO₃</u>
7 0
3 years ago
Which corresponds to a pressure of 1.23 atm??
Vadim26 [7]

Atmospheric pressure<span>, sometimes also called barometric pressure, is the pressure exerted by the weight of air in the </span>atmosphere of Earth<span> (or that of another planet)</span>

1 atm is equivalent to = 101325 Pa

= 760 mmHg

= 760 torr

= 1.01325 bar

So 1.23 atm is equal to

= 124629.8 Pa

= 934.8 mmHg

= 934.8 torr

<span>= 1.2462 bar</span>

6 0
3 years ago
If a substance melts at 20oC, what is its freezing point?
shutvik [7]

Answer:

It is difficult, if not impossible, to heat a solid above its melting point because the heat that ... in a solid are packed in a regular structure that is characteristic of that particular substance.

<h3>#carryONlearning </h3>

4 0
3 years ago
A gas mixture contains HBr, NO2, and C2H6 at STP.If a tiny hole is made in the container, which gas will effuse fastest?Which ga
MakcuM [25]

Explanation:

Molar mass of HBr = 81 g/mol

Molar mass of nitrogen dioxide gas = 46 g/mol

Molar mass of ethane = 30 g/mol

Graham's Law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

So, the gas with least molar mass will effuse out fastest from the container and that is ethane gas.

The formula for average kinetic energy is:

K.E=\frac{3}{2}kT

where,

k = Boltzmann’s constant = 1.38\times 10^{-23}J/K

T = temperature = 273.15 K ( at STP)

As we can see from the formula that kinetic energy depends upon only temperature of the gas molecule.

So, from this we can say that all the gas molecules have the same average kinetic energy at this temperature.

5 0
3 years ago
1. The elements on the Periodic Table are arranged in order of increasing
s344n2d4d5 [400]

Answer:

Atomic number

Explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • What is an example of a chemical change that takes a long time to occur?
    14·2 answers
  • How many grams of chromium are required to react with 125ml of 0.75m cuso4?
    8·1 answer
  • Is marble a compound or element?​
    7·2 answers
  • Which of these shows a volume of 1.25 liters expressed in milliliters
    8·2 answers
  • A 80.0 g piece of metal at 88.0°C is placed in 125 g of water at 20.0°C contained in a calorimeter. The metal and water come to
    11·1 answer
  • Using the table on the right, complete each calculation by typing in the correct answer.
    12·1 answer
  • What is the pH of water?
    8·1 answer
  • An organism’s genotype is
    13·1 answer
  • Potassium + Chlorine --&gt; Potassium Chloride
    11·2 answers
  • 2C2H2 + 502 = 4CO2 + 2H20<br>when 20000g of 2C2H2 + 5O2 = how much 4CO2?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!