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
Natalija [7]
3 years ago
13

A laboratory technician needs to prepare 500 milliliters of a 2 M solution of sodium hydroxide (NaOH) in a flask. The flask has

a volume of exactly 500 milliliters. Which quantity does the laboratory technician need to measure before making the solution?
Chemistry
2 answers:
nydimaria [60]3 years ago
8 0

Answer:

i am also struggling

Explanation:

Marat540 [252]3 years ago
4 0

Answer:

40 g NaOH

Step-by-step explanation:x

To make 500 mL of a 2 mol·L⁻¹ solution, the technician must measure the correct mass of NaOH.

Step 1. Calculate the <em>moles of NaOH </em>

c = n/V     Multiply both sides by V

n = Vc

c = 2 mol·L⁻¹

V =0.5 L

n = 0.5 × 2

n = 1 mol NaOH

Step 2. Calculate the <em>mass of NaOH </em>

The molar mass of NaOH is 40.00 g/mol.

m = 1 × 40.00/1

m = <em>40 g NaOH </em>

The technician must measure <em>40 g of NaOH</em>.

You might be interested in
What does this mean???
satela [25.4K]

Answer:

Its known as static electricity

8 0
2 years ago
A piece of asphalt has a volume of 5.0 cm3 and a mass of 7.5 g. What is the density of the asphalt?
strojnjashka [21]
Density = mass / volume
Density = 7.5 g / 5.0 cm3
Density = 1.5 g/cm3
6 0
3 years ago
What is the percent composition of chlorine in the compound Ba(ClO3)2?
tia_tia [17]

You're going to divide the mass of chlorine within the compound by the mass of the compound, and then multiply the result by 100 to get the answer

6 0
2 years ago
The specific heat of wood is 2.03 J/g.°C. How much
Brilliant_brown [7]

Answer:

11419 J/g/ 11.419 KJ/g

Explanation:

H=MCQ

H=225×2.03×(-15-10)

H=225×2.03(25) Note; negative sign is of no use

H=11419J/g

3 0
3 years ago
If a car travels 400 meters in 20 sec how fast is it going
pochemuha

Answer:

400 meters every 20 seconds

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the mass number, symbol, and charge of an atom that contains 19 protons, 20 neutrons and 19 electrons?
    10·1 answer
  • I need help on 5,6,7. I would give you guys a thank you. This is going to be due very soon.
    8·1 answer
  • Cobalt-60 is a strong gamma emitter that has a half- life of 5.26 yr. The co balt-60 in a radiotherapy unit must be replaced whe
    6·1 answer
  • MnO2 + 4HCl reacts to form MnCl2 + CL2 + 2H2O If .86 mol of MnO2 and 48.2 g of HCl react, which reactant is the limiting reagent
    7·1 answer
  • Explain how the words are alike and different
    10·1 answer
  • How do electrons in the same orbital move?
    11·1 answer
  • 3. What is the density of a 100 grams (g) box that displaces 20 mL of water?
    7·1 answer
  • IV. Provide the chemical Name of below acid or base.
    6·1 answer
  • Why are fingertips wet with saliva before counting money?​
    11·1 answer
  • Can someone please help? This is really hard!!
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!