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
harkovskaia [24]
2 years ago
11

Answer with explanation and you’ll get brain list

Chemistry
1 answer:
Gwar [14]2 years ago
5 0

Answer:

Option D.

Explanation:

  • 6H₂ + P₄ → 4PH₃

First we convert the given reactant masses into moles, using their respective molar masses:

  • 4.00 g H₂ ÷ 2 g/mol = 2 mol H₂
  • 6.20 g P₄ ÷ 124 g/mol = 0.05 mol P₄

0.05 moles of P₄ would react completely with (6*0.05) 0.3 moles of H₂. There are more H₂ moles than required, meaning H₂ is in excess and P₄ is the limiting reactant.

Now we<u> calculate how many PH₃ moles could be formed</u>, using the <em>number of moles of the limiting reactant</em>:

  • 0.05 mol P₄ * \frac{4molPH_3}{1molP_4} = 0.2 mol PH₃

Finally we <u>convert 0.2 mol PH₃ into grams</u>, using its <em>molar mass</em>:

  • 0.2 mol PH₃ * 34 g/mol = 6.8 g

So the correct answer is option D.

You might be interested in
Please write a balanced equation for this reaction!! WILL GIVE BRAINLIEST!! 50 points!!
Alex73 [517]

Answer:

Cu+2AgNO3--->2Ag+Cu(NO3)2

Explanation:

8 0
3 years ago
____________ limits or stops the growth of bacteria.
Kaylis [27]

Answer:

Vaccines

Explanation:

3 0
3 years ago
Read 2 more answers
Scientist can use the of minerals to tell them apart A.sound B.length C.size D.color
ipn [44]

Answer:

color

Explanation:

Scientists can use the color of minerals to tell them apart.

7 0
3 years ago
Which weather condition can be described as clouds at ground level?
PtichkaEL [24]
A cloud that forms on the ground is called fog. Some clouds you see in the sky might be from airplanes. These are called contrails. High level cirrus clouds may travel at speeds up to 100 mph.
6 0
3 years ago
Read 2 more answers
Wich has a larger percent by mass of sulfur - H2SO or H2S7O8?
Pie

Answer:

Explanation:

H2SO4 let S be x

2(1) + x + 4(-2) = 0

2 + x - 8 = 0

x - 6 = 0

x = 6

For H2S7O8 let S be x

2(1) + 7(x) + 8(-2) = 0

2 + 7x - 16 = 0

7x - 14 = 0

7x = 14

x = 14/7

x = 2

:- H2SO4 as the larger percentage

5 0
3 years ago
Other questions:
  • 20 Which term is defined as a measure of the disorder of a system?
    14·2 answers
  • Who was the 33rd president of the United States?
    8·1 answer
  • Soluble or Insoluble in water: Dirt
    12·1 answer
  • Consider the following equilibrium:H2CO3(aq) + H2O(l) H3O+(aq) + HCO3-1(aq).What is the correct equilibrium expression?
    14·1 answer
  • The density of a sample of gasoline is 0.70 g/cm3. What is the mass of 1 liter of this gasoline?
    11·1 answer
  • NaOH + HCl -&gt;<br> Fe + HCl -&gt;
    9·1 answer
  • HELP PLEASE !!!<br> Name the Salt formed When Nitric acid + Magnesium hydroxide
    7·1 answer
  • Look at your drawing how does the surface area affect the flow of heat from the foil into the ice
    5·1 answer
  • 50.0 g of nitrogen gas (N2 ) are kept under pressure in a 3.00 L container. If the pressure is kept constant, how many moles of
    12·1 answer
  • Describe at least four properties of electrons that
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!