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
beks73 [17]
3 years ago
5

Given the problem below, what would the first step be in solving it?

Chemistry
1 answer:
Hoochie [10]3 years ago
4 0

Answer:

First step would be convert to moles

Final Answer: 37.8 g of NaCl

Explanation:

The reaction is:

2Na + Cl₂ → 2NaCI

We convert the mass of each reactant to moles:

18 g . 1mol /23g = 0.783 moles of Na

23g . 1mol / 70.9g = 0.324 moles of chlorine

We use the mole ratio to determine the limiting reactant:

Ratio is 2:1. 2 moles of Na react to 1 mol of chlorine

Then, 0.783 moles of Na, may react to (0.783 . 1)/2 = 0.391 moles.

Excellent!. We need 0.391 moles of Cl₂ and we only have 0.324 moles available. That's why the Cl₂ is our limiting reactant.

We use the mole ratio again, with the product side. (1:2)

1 mol of Cl₂ can produce 2 moles of NaCl

Then, our 0.324 moles of gas, may produce (0.324 . 2)/1 = 0.648 moles

Finally, we convert the moles to grams:

0.648 mol . 58.45g/mol =

You might be interested in
Students are investigating the relationship between pressure and temperature in gases. They have blown up a balloon with carbon
Ierofanga [76]

Answer:

b

Explanation:

8 0
3 years ago
Read 2 more answers
Which subatomic particle determines the identity of an atom
Gelneren [198K]

The Protons determine the identity.

6 0
3 years ago
Identify the functional groups present in each molecule.
Colt1911 [192]

Answer:

Carbon 3 is double bonded to an oxygen and attached to carbon 2 and carbon 4. :

Answer: Carbonyl group ( Ketone or aldehyde)

Carbon 17 is attached to an oxygen, which is attached to a hydrogen. :

Answer: Carboxyl group (Carboxylic acid)

A central carbon is attached to an amine, two hydrogens, and a carbon that is double bonded to an oxygen and single bonded to an oxygen attached to a hydrogen. :

Answer: Amide group

An amide group contains both amine and carboxyl

.

5 0
2 years ago
Which Two of the following are pure substances*
Snowcat [4.5K]

Answer:

I think A and B

Explanation:

5 0
3 years ago
Read 2 more answers
A sample of nitrogen is initially at a pressure of 1.7 kPa, a temperature of -10 C and a volume of 7.5 m3. Then the volume is de
zhannawk [14.2K]

Answer:

\boxed{\text{2.6 kPa}}

Explanation:

To solve this problem, we can use the Combined Gas Laws:

\dfrac{p_{1}V_{1} }{T_{1}} = \dfrac{p_{2}V_{2} }{T_{2}}

Data:

p₁ = 1.7 kPa; V₁ = 7.5 m³;  T₁ =   -10 °C

p₂ = ?;          V₂ = 3.8 m³; T₂ = 200  K

Calculations:

(a) Convert temperature to kelvins

T₁ = (-10   + 273.15) K = 263.15 K

(b) Calculate the pressure

\begin{array}{rcl}\dfrac{1.7 \times 7.5 }{263.15} & = & \dfrac{p_{2} \times 3.8}{200}\\\\0.0485 & = & 0.0190p_{2}\\p_{2} & = & \textbf{2.6 kPa}\\\end{array}\\\text{The new pressure of the gas is \boxed{\textbf{2.6 kPa}}}

7 0
2 years ago
Other questions:
  • A compound is known to have an empirical formula of CH and a molecular mass of 78.11 g/ mom what is he molecular formula
    15·1 answer
  • Select all that apply. A scientific law: A- is generally accepted as true B- has never been found to be in error C- has no known
    6·2 answers
  • Can someone please help me with this question? I don't understand it
    9·2 answers
  • A compound contains 25.93% N and the rest is oxygen. What is the empirical formula for the compound?
    12·1 answer
  • The Sun keeps all of the planets orbiting it because _____.
    14·2 answers
  • Which of the following statement best describes wavelength?
    11·2 answers
  • In the future, biotechnology could be used to select traits in unborn babies.
    11·1 answer
  • A substance that flows is called a
    11·2 answers
  • The molar mass of water (H2O) is 18. 0 g/mol. A sample of water has a mass of 18. 0 g. How many moles of water are contained in
    8·1 answer
  • If it requires 45.8 cal to melt 8.4 g of a substance, what is the heat of
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!