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
Rashid [163]
3 years ago
5

Please help!!!!!!!!!!

Chemistry
1 answer:
scZoUnD [109]3 years ago
4 0

Answer:

<h2>true</h2>

yes, friend it is positive

You might be interested in
In the preparation of a certain alkyl halide, 10 g of sodium bromide (NaBr), 10 mL distilled water (H20), and 9 mL 3-methyl-1-bu
Novosadov [1.4K]

Percentage yield shows the amount of reactants converted into products. The percentage yield of the reaction is 51.7%.

The equation of the reaction is sown in the image attached. The reaction is 1:1 as we can see.

Number of moles of NaBr = 10 g/103 g/mol = 0.097 moles

We can obtain the mass of 3-methyl-1-butanol from its density.

Mass = density × volume

Density of 3-methyl-1-butanol =  0.810 g/mL

Volume of  3-methyl-1-butanol = 9 mL

Mass of 3-methyl-1-butanol = 0.810 g/mL × 9 mL

Mass of 3-methyl-1-butanol = 7.29 g

Number of moles of 3-methyl-1-butanol =  mass/molar mass =  7.29 g/88 g/mol = 0.083 moles

Since the reaction is 1:1 then the limiting reagent is 3-methyl-1-butanol

Mass of product 1-bromo-3-methylbutane = number of moles × molar mass

Molar mass of 1-bromo-3-methylbutane = 151 g/mol

Mass of product 1-bromo-3-methylbutane = 0.083 moles × 151 g/mol

= 12.53 g

Recall that % yield = actual yield/theoretical yield × 100

Actual yield of product = 6.48 g

Theoretical yield = 12.53 g

% yield = 6.48 g/12.53 g × 100

% yield = 51.7%

Learn more: brainly.com/question/5325004

7 0
3 years ago
1,4-Pentadiene has a AHhydro = -254 kJ/mol while trans-1,3-pentadiene has a AHhydra = -226 kJ/mol. Explain this difference in he
julsineya [31]

Answer:

trans-1,3-pentadiene is more stable than 1,4-pentadiene due to presence of a conjugated double bond.

Explanation:

Here, \Delta H_{hydro}=H(hydrogenated pdt.)-H(diene)

H(hydrogenated pdt.) is same for both 1,4-pentadiene and 1,3-pentadiene as they both produce pentane after hydrogenation

H(diene) depends on stability of diene.

More stable a diene, lesser will be it's H(diene) value (more neagtive).

trans-1,3-pentadiene is more stable than 1,4-pentadiene due to presence of a conjugated double bond.

Hence, \Delta H_{hydro} is higher (less negative) for trans-1,3-pentadiene

5 0
4 years ago
When sodium atoms (Na) and chlorine atoms (CT) join to make sodium chloride, or table salt, they form an ionic bond, Using this
jasenka [17]

Answer:

D I'm pretty sure.

Explanation:

I'm taking the quiz right now and D makes the most sense.

3 0
3 years ago
Read 2 more answers
The development of Avagadro's number was based on 12 grams of Hydrogen. Question 3 options: True False
Lemur [1.5K]
I believe the answer is false
6 0
3 years ago
A 38.6 kg marble slab is shown above what is its density? give grants to to the nearest tenth
Varvara68 [4.7K]

Answer:

Explanation:

to find the density you need the formula density = mass / volum e

you have the  mass but what is the volume

5 0
3 years ago
Other questions:
  • Which of the following does not describe a measurement standard? Group of answer choices Measurement standards avoid ambiguity.
    7·1 answer
  • List the following carboxylic acid derivatives in decreasing order of reactivity in nucleophilic acyl substitution reactions: ac
    6·1 answer
  • Out of 500 silicon atoms: 460 are si-28, which has a mass of 27.98 amu 25 are si-29, which has a mass of 28.98 amu and 15 are si
    5·2 answers
  • How many moles are in 109 grams of kf
    7·1 answer
  • Which is not true regarding the specific heat of water? the specific heat of water explains capillary action. the specific heat
    14·2 answers
  • What is it called when pollen fertilizes the egg​
    13·2 answers
  • In this unbalanced reaction, which atom is reduced? h2o + cl2 + so2 → hcl + h2so4
    8·2 answers
  • Which statement describes an interaction between the biosphere and the hydrosphere
    11·2 answers
  • Why is it important to prepare for disaster? what are the things you need to prepare?​
    10·1 answer
  • Are new atoms made during a chemical reaction?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!