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
Norma-Jean [14]
2 years ago
9

PLEASE HELP!!! I'll give brainliest answer

Chemistry
2 answers:
borishaifa [10]2 years ago
7 0

Answer:

Largest to Smallest: Na, K, Mg, N, O, F

Explanation:

ELEN [110]2 years ago
3 0

Answer:

1. MG

2. N

3. F

4. NA

5. O

6. K

You might be interested in
A student is adding DI water to a volumetric flask to make a 50% solution. Unfortunately, he was not paying attention and filled
dalvyx [7]

Answer:

His results will be skewed because there was more water than stock solution. Which would cause the percentage solution to be less than 50% therefore the density would be less than the actual value.

Explanation:

The solution will have percentage less than that of 50%. Therefore the density would be less than the actual value.

Suppose there should be 50 mL of the solution, and he added 60 mL. So 10 mL of the solution is added more.

Suppose the mass of the solute is m.

Originally, the density is = $\frac{m}{50}$     \left(\frac{\text{mass}}{\text{volume}}\right)

Now after adding extra 10 mL , the density becomes $\frac{m}{60}$.

Therefore, $\frac{m}{50}>\frac{m}{60}$

So the density decreases when we add more solution.

4 0
3 years ago
The temperature of a 100.0 g sample of water is raised from 30degrees celsius to 100.0 degrees celsius. How much energy is requi
worty [1.4K]

Answer:

29260J

Explanation:

Given parameters:

Mass of water sample  = 100g

Initial temperature = 30°C

Final temperature  = 100°C

Unknown:

Energy required for the temperature change = ?

Solution:

The amount of heat required for this temperature change can be derived from the expression below;

     H  = m c (ΔT)

H is the amount of heat energy

m is the mass

c is the specific heat capacity of water  = 4.18J/g°C

ΔT is the change in temperature

Now insert the parameters and solve;

          H  = 100 x 4.18 x (100 - 30)

          H  = 100 x 4.18 x 70 = 29260J

6 0
2 years ago
What mass of ammonia, NH3, is necessary to react with 2.1 x 10^24 molecules of oxygen in the following reaction? 4NH3(g) + 7O2(g
liubo4ka [24]
33.94 
multiply 17.031*1.993
4 0
3 years ago
Which factor decreases the rate of solution?
Rom4ik [11]
I am just answering so u can mark the other guy brainliest
4 0
2 years ago
Read 2 more answers
At 330 K the vapor pressure of pure n-pentane is 1.92 atm and the vapor pressure of pure n-octane is 0.07 atm. If 330K is the no
AleksAgata [21]

Answer: mole fractions are

For n-pentane = 0.965

For n-octane = 0.035

Explanation: pressure exerted by each gas is,

n-pentane = 1.92atm

n-octane = 0.07atm

Total pressure exerted = 1.92 + 0.07

= 1.99atm.

Recall that the partial pressure exerted by each gas is the product of its mole fraction and the total pressure, that is,

Pres. n-pentane = n x pressure(total)

1.92 = n x 1.99

n = 1.92/1.99 = 0.965 for n-pentane

For n-octane,

n = 1 - 0.965 = 0.035 for n-octane.

7 0
3 years ago
Other questions:
  • For a given chemical reaction, the addition of a catalyst provides a different pathway that(1) decreases the reaction rate and h
    13·2 answers
  • Name two air pollutants that bioaccumulate
    8·1 answer
  • Predict the products of the following reaction based upon solubility rules. (Separate substances in a list with a comma. Include
    13·1 answer
  • If the thorium-232 isotope emits an alpha particle, what would be the atomic number of the resulting atom?
    6·1 answer
  • 1. Which type of intermolecular attractive force operates between all molecules?
    12·2 answers
  • Fe + H2SO4 = Fe2(SO4)3 + H2
    12·1 answer
  • Changing a solid to a liquid to a gas is changing the<br> matter.<br> *<br> Your answer
    13·2 answers
  • Convert 12 kcal to joules
    12·2 answers
  • How many moles are in 5.22 x 10^24 atoms<br> of H2O?
    6·1 answer
  • Define the acid rain for class 10 .???
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!