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
sergey [27]
3 years ago
8

32 POINTS!!!!

Chemistry
2 answers:
krok68 [10]3 years ago
8 0
1. statement
2. b
3. a
makkiz [27]3 years ago
3 0
I think your answer are A B A
You might be interested in
Which of the following is not a step in the conversion 1.3 Dam cubed to liters
lisabon 2012 [21]
A is the answer, and put the choices

7 0
3 years ago
Convert 0.859 mg to cg.<br> Help me plz :(
andrey2020 [161]

Answer:

0.0859

Explanation:

7 0
3 years ago
2. The empirical formula of a molecule is CH2O. In an experiment, the molar mass of the molecule was determined to be 360.3 g/mo
Vanyuwa [196]

Answer:

The answer to your question is:

2.- C₁₂ H₂₄ O₁₂

Explanation:

2.-

Data

CH2O

molar mass = 360.3 g/mol

Molar mass of CH2O = 12 + 2 + 16 = 30g

Divide molar mass given by molar mass obtain

                   

                           x = 360.3/30

                          x = 12

Finally

                      C₁₂ H₂₄ O₁₂

Molar mass = (12 x 12) + (24 x 1) + (16 x 12) = 144 + 24 + 192 = 360 g

3.- First we need to write the complete equation of the reaction and balanced it.

Then, we need to convert the mass given to moles of each compound.

After that, we need used rule of three calculate the amount of products based on the moles of reactants given.

Finally, convert the moles to grams.

4.-

a.- It is a relation between the mass of product obtain in an experiment and the mass of a product obtain theoretically times 100.

b.-

35 g of Mg reacted with excess O2

percent yield = 90%

Actual yield = ?

Formula

Percent yield = (actual yield/theoretical yield) x 100

Equation  

                       2Mg  + O2 ⇒ 2MgO

                      48.62 g of Mg ----------------- 80.62 g of MgO

                      35g                  ------------------  x

                     x = 58 g of MgO     (Theoretical yield)

Theoretical yield = 58 g of MgO

Actual yield = percent yield x theoretical yield / 100

                    = 90 x 58 / 100

                   = 52. 23 g

5 0
3 years ago
3. Sand mixed with water​
Alekssandra [29.7K]

Answer:

<h3>Sand cannot mixed on water not float on water .</h3>

<h3>When we mix sand and water , No reaction take place . The sand simply settles down at the bottom of the water container . This is why sand is heavier than water and therefore cannot float in water .</h3>

<h2>Hope this helps you ✌️</h2>
7 0
2 years ago
Why does nobody fking answer my questions.
raketka [301]

Answer:

by wearing of rocks

Explanation:

earths gravity your welcome

6 0
3 years ago
Read 2 more answers
Other questions:
  • Name the 1 isomer of c7h16 that contains an ethyl branch on the parent chain.
    5·1 answer
  • Which of the following is an example of a mixture?
    10·2 answers
  • A scientist wants to determine how temperature affects photosynthesis? He sets up a controlled experiment in which he places sma
    12·1 answer
  • antimony(III) sulfide is reacted with excess iron. if 175.6 grams of pure antimony is produced what mass of antimony sulfide was
    9·1 answer
  • Which compound contains a triple bond?
    12·2 answers
  • Consider the reaction below.
    6·1 answer
  • What is a colander used for?
    13·2 answers
  • Write out and balance the chemical equation:
    12·2 answers
  • If a suspension of standing water where is zero gravity would it separate​
    14·1 answer
  • What does an increase in temperature do to the reaction rate?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!