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
Tema [17]
3 years ago
12

5) 3Na2SO4

Chemistry
1 answer:
Elodia [21]3 years ago
8 0

Answer:

im lost

Explanation:

You might be interested in
How many water molecules are need to break down an oligosaccharide that contains 10 glucose units?
mestny [16]
Answer is 10 units of water molecules.
3 0
3 years ago
If 45.0 mL of ethanol (density =0.789g/mol) initially at 6.0°C mix with 45.0 mL of water (density =1.0 g/mol) initially at 28.0°
Likurg_2 [28]

The final temperature of the mixture : 21.1° C  

<h3>Further explanation  </h3>

The law of conservation of energy can be applied to heat changes, i.e. the heat received / absorbed is the same as the heat released  

Q in(gained) = Q out(lost)  

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

Q ethanol=Q water

mass ethanol=

\tt mass=\rho\times V\\\\mass=0.789\times 45=35.505~g

mass water =

\tt mass=1~g/ml\times 45~ml=45~g

then the heat transfer :

\tt 35.505\times 2.42~J/g^oC\times (t-6)=45\times 4.18~J/g^oC\times (28-t)\\\\85.922t-515.533=5266.8-188.1t\\\\274.022t=5782.33\rightarrow t=21.1^oC

5 0
3 years ago
Can aromatic compounds belong to other classes of compounds?
Elena L [17]
They certainly can. However, they have other groups that are used to classify a compound.
8 0
3 years ago
Place each statement in the column of the particle that it best describes.<br> Refer To Photo
MrRa [10]

The options are labelled as:

1     2

3    4

5    6

7    8

Protons: 1, 5, 7

Neutrons: 2, 8

Electron: 3, 4, 6

5 0
3 years ago
How many hydrogen atoms are in 89.5 g of<br> C6H6 ?<br> Answer in units of atoms.
Elodia [21]

Solution :

Molar mass of C_6H_6 is :

M = 6×12 + 6×1 g

M = 78 g

78 gram of C_6H_6 contains 6.022 \times 10^{23} molecules.

So, 89.5 gram of C_6H_6 contains :

n = 6.022 \times 10^{23} \times \dfrac{89.5}{78}\\\\n = 6.91 \times 10^{23}

Now, from the formula we can see that one molecule of C_6H_6 contains 2 hydrogen atom . So, number of hydrogen atom are :

h = 2\times 6.91 \times 10^{23}\\\\h = 1.38 \times 10^{22}\ atoms

Hence, this is the required solution.

8 0
3 years ago
Other questions:
  • How many aluminum atoms are in 2.58 grams of aluminum
    6·1 answer
  • Explain the difference between plant and animals cells in 4 sentences.<br><br> 15 points!
    7·1 answer
  • What state of matter is the pumpkin
    5·2 answers
  • Which of the following is true about the products formed during photosynthesis?
    11·2 answers
  • Sodium carbonate + hydrochloric acidsodium chloride + carbon dioxide + water
    10·1 answer
  • A reaction has a rate constant of 0.000122s-1 at27oC and 0.228s-1 at 77oC. a)Determine the activation energy of the reaction. b)
    11·1 answer
  • Which properties of glass are a problem in transporting food<br>and drink?​
    11·1 answer
  • A chemical reaction is carried out in a closed container. the energy absorbed by the chemical reaction is 100 kj. What is the en
    13·1 answer
  • How could the student obtain zinc chloride solution from the reaction mixture when all the hydrochloric acid has reacted?
    5·1 answer
  • A solution is made using 245.9 mL of phenol (density 1.070 g/mL) and 400.0 mL of water (density 1.000 g/mL). What is the molalit
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!