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
Paraphin [41]
3 years ago
15

What is the correct formula for calcium fluoride

Chemistry
1 answer:
skad [1K]3 years ago
6 0
The answer would be CaF2
You might be interested in
Hi :) can someone answer this thank u
scoray [572]
Add all the carbon atoms (3) then add hydrogen atoms (8)
C3H8
3 0
3 years ago
One of the hopes for solving the world's energy problem is
lions [1.4K]

Answer:

2.803013439419911 × 10⁻¹² J

Explanation:

Mass defect = mass of reactant - mass of product

(2.0140 + 3.01605) - (4.002603 + 1.008665)

5.03005 - 5.011268 = 0.018782 amu

mass in Kg = mass (amu) × 1.66053892173 × 10⁻²⁷ kg

mass in kg = 0.018782 × 1.66053892173 × 10⁻²⁷ = 3.1188242027932 × 10⁻²⁹kg

E = Δm c² where c is the speed of light = 2.9979 × 10⁸m/s

E = 3.1188242027932 × 10⁻²⁹kg × (2.9979 × 10⁸m/s)² = 2.803013439419911 × 10⁻¹² J

6 0
3 years ago
The reaction of C4H8 and Br2 to yield C4H2Br2 represents​
natima [27]

Answer:

A Synthesis Reaction

Explanation:

A + B --> AB

8 0
3 years ago
Chromium(III) oxide can be prepared by heating chromium(IV) oxide in vacuo at high temperature: 4Cr02 —2Cr2O3 +02 The reaction o
kkurt [141]

<u>Answer:</u> The theoretical yield and percent yield of chromium (III) oxide is 434.72 grams and 92.6 % respectively.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}     .....(1)

Given mass of CrO_2 = 480.1 g

Molar mass of CrO_2 = 84 g/mol

Putting values in equation 1, we get:

\text{Moles of }CrO_2=\frac{480.1g}{84g/mol}=5.72mol

For the given chemical equation:

4CrO_2\rightarrow 2Cr_2O_3+O_2

By Stoichiometry of the reaction:

4 moles of CrO_2 produces 2 moles of chromium (III) oxide

So, 5.72 moles of CrO_2 will produce = \frac{2}{4}\times 5.72=2.86mol of chromium (III) oxide

Now, calculating the mass of chromium (III) oxide from equation 1, we get:

Molar mass of chromium (III) oxide = 152 g/mol

Moles of chromium (III) oxide = 2.86 moles

Putting values in equation 1, we get:

2.86mol=\frac{\text{Mass of chromium (III) oxide}}{152g/mol}\\\\\text{Mass of chromium (III) oxide}=(2.86mol\times 152g/mol)=434.72g

To calculate the percentage yield of chromium (III) oxide, we use the equation:

\%\text{ yield}=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100

Experimental yield of chromium (III) oxide = 402.4 g

Theoretical yield of chromium (III) oxide = 434.72 g

Putting values in above equation, we get:

\%\text{ yield of chromium (III) oxide}=\frac{402.4g}{434.72g}\times 100\\\\\% \text{yield of chromium (III) oxide}=\%

Hence, the theoretical yield and percent yield of chromium (III) oxide is 434.72 grams and 92.6 % respectively.

7 0
3 years ago
Keep your work area neal and
Sindrei [870]
Clean? I’m pretty sure not sure what it means but.
8 0
2 years ago
Other questions:
  • What are the concentrations of hydroxide and hydronium ions in a solution with a pH of 8.3?
    11·1 answer
  • Redox means reduction and oxidation. It can be defined by loss and gain of oxygen or by loss and gain of electrons.
    10·1 answer
  • Question 26(Multiple Choice Worth 1 points) [01.03]Which of the following statements does not support scientific evidence of the
    5·1 answer
  • In the explosion of a hydrogen-filled balloon, 0.40 g of hydrogen reacted with 3.2 g of oxygen. How many grams of water vapor ar
    15·1 answer
  • Consider the reaction
    15·1 answer
  • Methane is a gas that easily catches fire. This statement is describing a _____.
    7·1 answer
  • How is a doorbell an example of an electrical transformation
    15·1 answer
  • A storm that stays longer over coasts is a more dangerous storm. Is this statement true or false?
    8·2 answers
  • Help with this please I’m really bad at this I will mark brainlist
    8·1 answer
  • What is the approximate partial pressure of oxygen at 1500 m?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!