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
Tatiana [17]
3 years ago
8

Help science!! *10 points*

Chemistry
1 answer:
avanturin [10]3 years ago
8 0

Answer:

which one do you need help with?

You might be interested in
Please help me understand how to...
KonstantinChe [14]

Answer:

m_{Cr_2O_3}^{actual}=62.4gCr_2O_3

Explanation:

Hello!

In this case, according to the reaction:

4Cr+3O_2\rightarrow 2Cr_2O_3

We can see there is a 4:2 mole ratio between chromium and chromium (III) oxide, this, for the given 56.2 g of chromium, the theoretical yield of the oxide product is computed down below:

m_{Cr_2O_3}^{theoretical}=56.2gCr*\frac{1molCr}{52.0gCr}*\frac{2molCr_2O_3}{4molCr} *\frac{151.99gCr_2O_3}{1molCr_2O_3}  =82.13gCr_2O_3

Now, considering the 76.0-% yield for this reaction, the actual yield turns out:

m_{Cr_2O_3}^{actual}=82.13gCr_2O_3*\frac{76.0gCr_2O_3}{100gCr_2O_3} \\\\m_{Cr_2O_3}^{actual}=62.4gCr_2O_3

Best regards!

3 0
3 years ago
Element X
dedylja [7]
Element x is Silicon
7 0
3 years ago
Given 50.0 grams of Strontium, find grams of Phosphorus required for complete reaction
Sveta_85 [38]

Answer:

                     Mass = 11.78 g of P₄

Explanation:

                     The balance chemical equation is as follow:

                                          6 Sr + P4 → 2 Sr₃P₂

Step 1: Calculate moles of Sr as;

Moles = Mass / M/Mass

Moles = 50.0 g / 87.62 g/mol

Moles = 0.570 moles

Step 2: Find moles of P₄ as;

According to equation,

6 moles of Sr reacted with  =  1 mole of P₄

So,

0.570 moles of Sr will react with  =  X moles of P₄

Solving for X,

X = 1 mol × 0.570 mol / 6 mol

X = 0.0952 mol of P₄

Step 3: Calculate mass of P₄ as,

Mass = Moles × M.Mass

Mass = 0.0952 mol × 123.89 g/mol

Mass = 11.78 g of P₄

8 0
3 years ago
What is the difference between a carnivore and a herbivore?? ​
agasfer [191]

meat-eating carnivores have teeth for tearing and skulls capable of biting with great force, while the plant-eating herbivores have teeth and skulls equipped to grind tough vegetation

6 0
3 years ago
Read 2 more answers
The chemical process in which electrons are gained by an atom or an ion is called
Harman [31]
Reduction is the process by which eletrons are gained by an atom. 
6 0
3 years ago
Other questions:
  • Which of the following statements about minerals is false?
    8·1 answer
  • How does most of the water in the water cycle move from lakes and rivers directly back into the atmosphere?
    14·2 answers
  • In bohr's atomic theory when electron moves from one energy level to another energy level closer to the nucleus:
    13·1 answer
  • How many moles of co are contained in a 5.00 l tank at 155°c and 2.80 atm?
    9·1 answer
  • PLEASE HELP ME DUE TOMORROW IT REALLY HELPS IF YOU HELP ME THANK YOU SO MUCH IS YOU DO HELP ME!!
    14·1 answer
  • How are plan and animal cells different?
    14·2 answers
  • Hof metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the
    7·1 answer
  • IS IT B, C, OR D <br> PLZ HELP AND DONT BE WRONG
    9·2 answers
  • 3. Balance the equation below.
    10·1 answer
  • When organic matter decomposes under oxygen-free (anaerobic) conditions, methane is one of the products. Thus, enormous deposits
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!