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
nasty-shy [4]
3 years ago
13

A chemist adds 405.0mL of a 0.79M sodium carbonate solution to a reaction flask. Calculate the millimoles of sodium carbonate th

e chemist has added to the flask. Be sure your answer has the correct number of significant digits. Answer must be in mmol
Chemistry
1 answer:
Sophie [7]3 years ago
4 0

Answer:

320 mmol

Explanation:

405.0 mL * 1L/1000 mL = 0.4050 L

0.79 M = 0.79 mol/L

0.79 mol/L * 0.4050 L=0.32 mol

0.32 mol * 10^3 mmol/1 mol = 320 mmol

You might be interested in
Someone help me please
vesna_86 [32]
I am pretty sure its b, Ag atoms and localized electrons in silver
3 0
2 years ago
I need help can someone please do so?
larisa86 [58]

Answer:

0.296 J/g°C

Explanation:

Step 1:

Data obtained from the question.

Mass (M) =35g

Heat Absorbed (Q) = 1606 J

Initial temperature (T1) = 10°C

Final temperature (T2) = 165°C

Change in temperature (ΔT) = T2 – T1 = 165°C – 10°C = 155°C

Specific heat capacity (C) =..?

Step 2:

Determination of the specific heat capacity of iron.

Q = MCΔT

C = Q/MΔT

C = 1606 / (35 x 155)

C = 0.296 J/g°C

Therefore, the specific heat capacity of iron is 0.296 J/g°C

8 0
3 years ago
Explain why the Amazon River does not create deltas?
jeka57 [31]

Answer:

The ocean currents are too strong by the Amazon River to form deltas.

Explanation:

The Atlantic has sufficient wave and tidal energy to carry most of the Amazon's sediments out to sea, thus the Amazon does not form a true delta. The great deltas of the world are all in relatively protected bodies of water, while the Amazon empties directly into the turbulent Atlantic.

4 0
2 years ago
How to answer all these questions?
Fudgin [204]
You have to do it to see the results
8 0
3 years ago
Vegetarian diets can provide high levels of antioxidants and a lipid profile that can help prevent coronary disease. However, th
Arada [10]

Answer:

The correct option is: "Vitamin B12 (cobalamin) is not found in the vegan diet and is very low in the lacto-vegetarian diet"

Explanation:

Homocysteine is a VERY IMPORTANT type of amino acid, a chemical that the body uses to make proteins. Normally, vitamin B12, vitamin B6, and folic acid break down homocysteine and transform it into other substances that the body needs. There should be very little homocysteine left in the bloodstream. If you have high homocysteine levels in your blood, that could be a sign of a vitamin deficiency of the vitamins listed above, a heart condition, or a rare inherited disorder.

8 0
2 years ago
Read 2 more answers
Other questions:
  • What happens as blood passes through the capillaries in the small intestine
    10·2 answers
  • List two physical properties and two chemical properties.
    7·1 answer
  • Water (2110 g ) is heated until it just begins to boil. if the water absorbs 551000. j of heat in the process, what was the init
    12·1 answer
  • Which substance is a gas at 20˚C and one atmosphere of pressure? A. C B. O3 C. Ca D. I2
    13·1 answer
  • which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal p
    11·1 answer
  • When aqueous solutions of ________ are mixed, a precipitate forms.
    10·1 answer
  • What is the average atomic mass listed for nitrogen in the periodic table?
    15·1 answer
  • What is the mass of carbon in carbon dioxide
    12·1 answer
  • Why is water typically used as the heat-absorbing liquid in calorimetry?
    9·1 answer
  • What geologic features might form in convergent boundaries<br>Pls help
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!