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
nata0808 [166]
3 years ago
13

What’s the correct answer

Chemistry
1 answer:
butalik [34]3 years ago
3 0
He ^ 2+

Helium has two electrons the 2+ means that it has lost its two electrons leaving it with none.
You might be interested in
A sample of nitrogen gas has a volume of 478 cm3 and a pressure of 104.1 kPa. What volume would the gas occupy at 88.2 kPa if th
nadezda [96]

<span>1.    </span>To solve this we assume that the gas is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant temperature and number of moles of the gas the product of PV is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

P1V1 =P2V2

V2 = P1 x V1 / P2

 V2 = 104.1 x 478 / 88.2

<span> V2 =564.17 cm^3</span>

6 0
2 years ago
Read 2 more answers
Can someone help me thank you. I have to look at each picture and determine if the circuits shown are series circuits or paralle
rodikova [14]

Answer:

I believe it may be-

1. Series

2. Parallel

3. Parallel

4. Series

Explanation:

In a series circuit, electricity only has one path to follow while a parallel circuit has more than one path to follow.

7 0
2 years ago
How many molecules in each sample?<br><br> 64.7 g N2<br> 83 g CCl4<br> 19 g C6H12O6
lilavasa [31]

Answer:

  • 1.39x10²⁴ molecules N₂
  • .25x10²³ molecules CCl₄
  • 6.38x10²² molecules C₆H₁₂O₆

Explanation:

First we <u>convert the given masses into moles</u>, using the <em>compounds' respective molar mass</em>:

  • 64.7 g N₂ ÷ 28 g/mol = 2.31 mol N₂
  • 83 g CCl₄ ÷ 153.82 g/mol = 0.540 mol CCl₄
  • 19 g C₆H₁₂O₆ ÷ 180 g/mol = 0.106 mol C₆H₁₂O₆

Then we multiply each amount by <em>Avogadro's number</em>, to <u>calculate the number of molecules</u>:

  • 2.31 mol N₂ * 6.023x10²³ molecules/mol = 1.39x10²⁴ molecules
  • 0.540 mol CCl₄ * 6.023x10²³ molecules/mol = 3.25x10²³ molecules
  • 0.106 mol C₆H₁₂O₆ * 6.023x10²³ molecules/mol = 6.38x10²² molecules
3 0
2 years ago
a. Order the following liquids in order from least dense to most dense: Dish Soap, Rubbing Alcohol, Milk, Corn Syrup.
Anettt [7]

dish Soap,Corn Syrup,Rubbing Alcohol, Milk,

7 0
2 years ago
When 4.50 L of hydrogen gas react with an excess of nitrogen gas at standard temperature and pressure, how many liters of ammoni
VARVARA [1.3K]

Answer:

           3.0 L of NH₃

Solution:

The equation is as follow,

                                    N₂  +  3 H₂     →       2 NH₃

According to equation,

          67.2 L (3 mole) H₂ at STP produces  =  44.8 L (3 mole) of NH₃

So,

                            4.50 L of H₂ will produce  =  X L of NH₃

Solving for X,

                     X  =  (4.50 L × 44.8 L) ÷ 67.2 L

                     X  =  3.0 L of NH₃

5 0
3 years ago
Other questions:
  • Is a Frisbee flying through the air mechanical energy
    15·1 answer
  • The value of the atomic mass of an atom
    10·1 answer
  • What is <br><br> 114.1 kPa to atm
    8·1 answer
  • Number 14 please fast answer
    7·2 answers
  • Classify each of the following as energy primarily transferred as HEAT or energy primarily transferred as WORK.
    7·1 answer
  • WILL GIVE BRAINLEST!!
    13·1 answer
  • Jacket
    15·1 answer
  • Which molecule is pentanoic acid?
    13·1 answer
  • which is stronger H2SO4 (sulfuric acid) or NaOH (sodium hydroxide)? It takes 8 drops of sulfuric acid added to sodium hydroxide
    5·1 answer
  • Geologists have a rule of thumb: when molten rock cools and solidifies, crystals of compounds with the smallest lattice energies
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!