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
grigory [225]
2 years ago
9

Element Molar Mass (g/mol)

Chemistry
2 answers:
Scorpion4ik [409]2 years ago
7 0

The number of moles of ethanol the chemist will use is 0.65 moles.

<h3>What is a mole?</h3>

A mole is the atomic weight of a molecule of chemical in grams

To calculate the number of moles of ethanol the chemist will use, we apply the formula below.

Formula:

  • n = R'/M.............. Equation 1

Where:

  • n = number of moles of ethanol
  • m = mass of ethanol
  • M = molar mass of ethanol

From the question,

Given:

  • R' = 30 g
  • M = [(12.01)+(1.01×3)+(12.01)+(1.01×2)+(16.0)+(1.01)] = 46.08 g/mol

Substitute these values into equation 1

  • n = 30/46.08
  • n = 0.65 moles.

Hence, The number of moles of ethanol the chemist will use is 0.65 moles.

Learn more about moles here: brainly.com/question/15356425

artcher [175]2 years ago
6 0

The number of moles of ethanol the chemist will use in the experiment involving 30g of ethanol is 0.65moles.

<h3>How to calculate number of moles?</h3>

The number of moles of a substance can be calculated by dividing the mass of the substance by its molar mass. That is;

no. of moles = mass ÷ molar mass

According to this question, a chemist will use a sample of 30 g of ethanol (CH3CH2OH) in an experiment. The number of moles can be calculated as follows:

Molar mass of ethanol = 12(2) + 1(5) + 17 = 46g/mol

no of moles = 30g ÷ 46g/mol

no. of moles = 0.65moles

Therefore, the number of moles of ethanol the chemist will use in the experiment involving 30g of ethanol is 0.65moles.

Learn more about moles at: brainly.com/question/1458253

You might be interested in
Does the pH increase or decrease, and does it do so to a large or small extent, with each of the following additions?(c) 5 drops
Umnica [9.8K]

The pH decreases to a large or small extent with each of the given additions.

<h3>What is common name of NaOH?</h3>

The common name of NaOH is sodium hydroxide. Lye and caustic soda are other names for sodium hydroxide, an inorganic substance having the formula NaOH. It is a white, solid ionic substance made up of the cations sodium (Na+) and the anions hydroxide (OH). Sodium hydroxide is a chemical that manufacturers utilize to make things like soap, rayon, paper, explosives, colors, and petroleum products. Processing cotton fabrics, metal cleaning and processing, oxide coating, electroplating, and electrolytic extraction are further uses for sodium hydroxide. A caustic metallic base is sodium hydroxide (NaOH), sometimes referred to as lye or caustic soda. Caustic soda, an alkali, is commonly employed in a variety of sectors, primarily as a potent chemical base in the production of pulp and paper, textiles, drinking water, and detergents.

To learn more about sodium hydroxide, visit:

brainly.com/question/24010534

#SPJ4

6 0
1 year ago
8. Which of the following compounds is an ionic compound? (metal)
fomenos
The answer is b, because all of the other compounds are covelent
6 0
3 years ago
Read 2 more answers
Silver metal can be prepared by reducing its nitrate, AgNO3 with copper according to the following equation:
Lerok [7]

%yield = 88.5%

<h3>Further explanation</h3>

Given

Reaction

Cu(s) + 2 AgNO₃(aq) → Cu(NO₃)₂(aq) + 2Ag(s)

Required

The percent yield

Solution

mol AgNO₃(MW=169,87 g/mol) :

= mass : MW

= 127 : 169.87

= 0.748

mol Ag from equation :

= 2/2 x mol AgNO₃

= 2/2 x 0.748

= 0.748

Mass Ag (theoretical) :

= mol x Ar Ag

= 0.748 x 108

= 80.784

% yield = (actual/theoretical) x 100%

%yield = 71.5/80.784 x 100%

<em>%yield = 88.5%</em>

7 0
2 years ago
Convert 7.02 mol of NaCl to formula units??
nika2105 [10]

<span>To convert the number of moles a compound to formula units, the conversion factor is Avogadro's number, 6.022 x10^23 formula units/ mol. In this case, we are given with 7.02 moles of sodium chloride. Hence the answer is 4.23 x 10^24 formula units.</span>

8 0
2 years ago
Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: ()zn
Bingel [31]

Based on the chemical equation, to balance the equation we use 2 as a coefficients of HCl on left hand side of reaction.

<h3>What is balanced equation?</h3>

Balanced chemical equations are those equation in which each entities are present in same amount on left side as well as on the right side of the chemical reaction.

Given chemical reaction is:

Zn + HCl → ZnCl₂ + H₂

Above reaction is not balanced equation as number of chlorine and hydrogen atoms are not same, so balanced equation will be:

Zn + 2HCl → ZnCl₂ + H₂

Hence we add 2 as a coefficient of HCl to balance the equation.

To know more about balance equation, visit the below link:
brainly.com/question/26694427

8 0
2 years ago
Other questions:
  • In the density of a liquid activity, the graph had an intercept. If you were to make a similar graph using metal blocks, would t
    15·1 answer
  • An atom of which element has the largest atomic radius?
    13·1 answer
  • How many molecules (not moles) of nh3 are produced from 6.89×10−4 g of h2?
    5·1 answer
  • Water could be made to boil lower than its normal boiling point of 100 degrees Celsius at 92 degrees Celsius by?
    11·1 answer
  • Use the standard reduction potentials located in the 'Tables' linked above to calculate the equilibrium constant for the reactio
    14·1 answer
  • Which of the following chemical substances has a triple
    11·1 answer
  • 4. When cerium sufate, Ce(SO4)3, is dissolved in water, energy is:?
    7·1 answer
  • What is molarity? .​
    13·1 answer
  • Look at the figure below. Which of the following statement could be a step in proof that Vertical angles are congruent
    12·1 answer
  • a solid form of precipitation that forms when water droplets in a cloud get very cold and collide with other super cold water dr
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!