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
kolezko [41]
3 years ago
5

How many moles are equal to 145 g of sodium carbonate?

Chemistry
2 answers:
vladimir1956 [14]3 years ago
5 0
More explain??!!?!???
slavikrds [6]3 years ago
3 0

Answer:

There are

0.0642 mol Na

2

CO

3

in

6.80 g

.

Explanation:

The chemical formula of sodium carbonate is

Na

2

CO

3

. The molar mass of sodium carbonate is

105.988439 g/mol

.

You might be interested in
The teacher shows students a pictorial model of an atom. Which element is
frutty [35]

Answer:

C. Fluorine because the model has 9 protons which is represented by the atomic number

Explanation:

We usually identify an element by the number of protons in them. The number of protons is the atomic number of an atom.

  • Every atom has a specific number of protons in them.
  • This number of protons is the atomic number.
  • According to the periodic law, atoms are arranged on the periodic table based on their atomic number.
  • The given fluorine atom has 9 protons which represents the atomic number of the atom.
  • This way, the given number clearly shows the right model for identifying the chemical specie.
4 0
2 years ago
Help please please please!
LenaWriter [7]

Answer:

I say the second one, im not rlly sure tho

Explanation:

5 0
2 years ago
Please help, I really don’t understand this!!!
kap26 [50]

<u>Analysing the Question:</u>

We are given the balanced equation:

C₆H₁₂O₆ + 6O₂→ 6CO₂ + 6H₂O

from this equation, we can say that: <em>for every 1 mole of Glucose, we need 6 moles of Oxygen</em>

<u>Moles of Glucose used in the reaction:</u>

Molar mass of Glucose = 180 grams / mol

Given mass of Glucose = 1 gram

Mole of Glucose = Given mass / Molar mass

Moles of Glucose = 1 / 180 moles

<u>Mass of Oxygen required:</u>

We know that for every mole of Glucose, we need 6 moles of Oxygen

So, for 1/180 moles of Glucose, we need 6 / 180 = 1 / 30 moles of Oxygen

Mass of 1 / 30 moles of Oxygen:

Mass = Molar mass * number of moles

Mass of Oxygen = 32 * 1/30

Mass of Oxygen  = 32 / 30

Mass of Oxygen = 1.06 grams

5 0
3 years ago
Explain why the process of dissolution can be exothermic or endothermic (heat of solution) with different solutes
RUDIKE [14]

Answer:

The process of dissolving is exothermic when more energy is released when water molecules “bond” to the solute than is used to pull the solute apart. Because more energy is released than is used, the molecules of the solution move faster, making the temperature increase.

Project the image Endothermic Dissolving.

The process of dissolving is endothermic when less energy is released when water molecules “bond” to the solute than is used to pull the solute apart. Because less energy is released than is used, the molecules of the solution move more slowly, making the temperature decrease.

4 0
3 years ago
Why do different molecules require different masses to make 1 mol
Wewaii [24]

Answer:

Different substances have different molecular masses. Thus, equal masses have different numbers of atoms, molecules, or moles. On the other hand, equal numbers of moles of different substances have different masses.

3 0
3 years ago
Other questions:
  • What defines endothermic reactions and exothermic reactions? Select all that apply.
    5·2 answers
  • The unique odors and flavors of many fruits are primarily due to small quantities of a certain class of organic compounds. The e
    14·1 answer
  • At constant temperature and pressure, 5.0 L of SO2 is
    12·1 answer
  • Which statement best describes the formula equation cl1(g) + 2kbr(aq) —&gt; 2kcl(aq)+br2(i)
    9·1 answer
  • How many seconds are there in one light-year?
    6·1 answer
  • he specific heat capacity of a pure substance can be found by dividing the heat needed to change the temperature of a sample of
    12·1 answer
  • Why is electrical conductivity a resourceful property of metals like copper, silver, and aluminum?
    8·1 answer
  • Which term found in the electromagnetic spectrum is determined by its wavelength?
    6·2 answers
  • For species that reproduce asexually, all their offspring are
    11·1 answer
  • What is the specific heat of a substance if 1500 J are required to raise the temperature of a 300.0 g sample from 25°C to 40°C?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!