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
Lerok [7]
3 years ago
11

How many atoms of beryllium are equal to 0.39 moles of beryllium?

Chemistry
1 answer:
FinnZ [79.3K]3 years ago
3 0

Answer:

2.35 x 10²³atoms

Explanation:

Given parameters:

Number of moles of Be  = 0.39moles

Unknown:

Number of atoms  = ?

Solution:

To solve this problem:

                1 mole of a substance contains 6.02 x 10²³ atoms

               0.39 mole of Be will contain 0.39 x 6.02 x 10²³ = 2.35 x 10²³atoms

You might be interested in
How do you determine the percent yield of a chemical reaction?
valentinak56 [21]

Answer:

percentage yield =[ experimental yield / theoretical yield] x 100

Explanation:

7 0
2 years ago
What is it I need help​
dybincka [34]
Hi, i think the correct answer would be D .
3 0
3 years ago
Pls help
Simora [160]

Heat required to raise the temperature = 159.505 J

<h3>Further explanation</h3>

Given

c = specific heat of Beryllium = 1.825 J/g C

m = mass = 2.3 g

Δt = Temperature difference : 60 - 22 = 38 °C

Required

Heat required

Solution

Heat can be formulated

Q = m.c.Δt

Input the value :

Q = 2.3 x 1.825 x 38

Q = 159.505 J

8 0
2 years ago
How many grams of ammonium chloride (gram formula mass= 53.5 g) are contained in .500 L of a 2.00 M solution?
Elza [17]

Answer:

53.5g of NH4Cl

Explanation:

First, we need to obtain the number of mole of NH4Cl. This is illustrated below:

Volume = 0.5L

Molarity = 2M

Mole =?

Molarity = mole /Volume

Mole = Molarity x Volume

Mole = 2 x 0.5

Mole = 1mole

Now, let us convert 1mole of NH4Cl to gram. This is illustrated below:

Molar Mass of NH4Cl = 53.5g/mol

Number of mole = 1

Mass =?

Number of mole = Mass /Molar Mass

Mass = number of mole x molar Mass

Mass = 1 x 53.5

Mass = 53.5g

Therefore, 53.5g of NH4Cl is contained in the solution.

8 0
3 years ago
Help please I need help with these two questions answer truthfully get brainliest?!!​
irina1246 [14]

Answer:

1. 3x-3=18

Value of x=7

2. 4x-5=23

value of x=7

5 0
2 years ago
Read 2 more answers
Other questions:
  • What is true about a carbonated soft drink in relation to acids, bases, solutes, and solvents?
    15·1 answer
  • rain, freezing rain, sleet, snow, and hail are all examples of a. infiltration. b. precipitation. c. evaporation. d. condensatio
    11·2 answers
  • write both he full balanced ionic equation for the following reaction and the balanced net ionic equation. What are the specter
    10·1 answer
  • Calcium nitrate reacts with sodium phosphate to form sodium nitrate and calcium phosphate. Given 96.1 grams of calcium nitrate w
    10·1 answer
  • At 8:00, the temperature was 6 degrees Celsius (°C). Three hours later, the temperature was -13°C.
    13·2 answers
  • What is the reducing agent in the reaction below? <br><br> CrO3 + 2Al Cr + Al2O3
    10·2 answers
  • What is the natural process that converts radiant energy into chemical energy called?
    11·1 answer
  • I need help ......................................
    14·2 answers
  • Jamal draws the circuit diagram shown.
    8·1 answer
  • In an experiment trying to dissolve sugar in water, a person boils water in a pot on the stove and then puts the water and the s
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!