The percent yield : 88.4%
Further explanationReaction
Salicylic acid (C₇H₆O₃) reacts with acetic anhydride (C₄H₆O₃) to form acetylsalicylic acid (C₉H₈O₄)
2C₇H₆O₃(aq)+C₄H₆O₃(aq)⇒2C₉H₈O₄(aq) + H₂O(l)
MW C₇H₆O₃ : 138.12 g/mol
mol C₇H₆O₃
[tex]\tt \dfrac{200}{138.12}=1.45[/tex]
MW C₉H₈O₄ : 180.16 g/mol
mol C₇H₆O₃ = mol C₉H₈O₄ (mol ratio from equation 2:2), so mass of C₉H₈O₄
[tex]\tt 1.45\times 180.16=261.232~g[/tex]
percent yield :
[tex]\tt =\dfrac{actual}{theoretical}=\dfrac{231}{261.232}=0.884=88.4\%[/tex]
A bad case of tonsillitis can sometimes affect a person’s breathing.How is this possible ?
Answer:
Tonsillitis is inflammation of tonsils. It is caused by viral infection and very rarely by bacterial infection.
It is a very serious problem in case of children, adults and teenagers. The continuous coughing can lead to swelling in the throat which in case affects the passage of airways.
This hindered air passage can cause breathing problems. The inflammation can also affect the passage of air and affects breathing.
Explanation:
The number of elements in one molecule of H2O is
1) 5 elements
2) 5 atoms
3) 2 elements
4) 0 elements
Answer:
2 elements
Explanation:
There are the two elements that make water
I am a liquid metal with 80 electrons
Answer:
Mercury
Explanation:
Mercury is a liquid element that contains 80 electrons when not charged.
Heeeeeelp will give brainliest
What is the total number of atoms in 36 molecules of glucose C6 (H2O) 6
Answer:
Explanation:
Glucose has a chemical formula of: C6H12O6 That means glucose is made of 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms.
___ V2O5 + ___ CaS ___ CaO + ___ V2S5
Answer:
3
Explanation:
can someone please help me with this question I will be soooo happy!!!
Answer:
The box exerts a resistance greater than 15 N.
Explanation:
If the student pushed on the box with 15 N and the box didn't more then the box gave a resistance greater than 15 N.
Hope This Helps! (and makes sense!)
Compare an object sliding across carpet and that same object sliding across a bare floor. Why is the object quicker to slow down on carpet than on the bare floor?
The same object moves quicker through the bare floor than carpet as there has been no friction force acting on the object on the bare floor.
The friction force has been the force that has been applied against the motion of the object. The friction force has been created with the uneven surfaces that result in the slowing of the motion of the object.
The object has been slid against the carpet and the bare floor. The carpet has been the rough surface, that has been able to apply the friction force against the object.
The bare floor has been the smooth surface that has been able to slide down the object without the application of any friction force that has been able to move the object faster.
Thus, the same object moves quicker through the bare floor than carpet as there has been no friction force acting on the object on the bare floor.
For more information about the speed of the object, refer to the link:
https://brainly.com/question/8156489
I need help I know it isnt A
The ratio of boys to girls at a school
dance is shown in the graph.
0
1
2
3
4
5
6
7
8
9
123456789
Number of Girls
Number of Boys
x
y
Which equation has a greater rate
of change than the rate shown in
the graph?
a. y 5 __
1
5 x
b. y 5 __
1
7 x
c. y 5 __
2
9 x
d. y 5 __
2
3 x
Answer:
Si tú puedes 1-2-3-4-5-6-7-8-9-10 eso debes de ser más bien dicho sacaran Club Ojalá que te ayude Chau
Explanation:
de Ojalá que te ayude No te olvides de sacar todas las preguntas esas lo que tú dijiste y si tú promoción 123 saquen globo que quieras tú
Which of the following is the best insulator?
Group of answer choices
copper
aluminum
gold
wood
Answer:
wood
Explanation:
hope this helps! good luck on ur test :)
Answer:
Wood
Explanation:
2. A chemical reaction occurs when substances interact and their atoms
O A. disappear
B. change their size.
C. become new atoms.
O D. rearrange
Answer:Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.
Explanation:
2. Which of the following represents the tiny parts within a cell? *
Li and S - covalent or ionic bond?
Answer:
It is an ionic bond.
Explanation:
Ionic bonds occur when a metal and a nonmetal combine, while covalent bonds occur between two nonmetals. Lithium is a metal and sulfur is a nonmetal.
How many moles are in 2.99 x 10^24 atoms of Ca? (
answer. Keep 3 sigfigs in your final answer) *
Answer:
4.97 moles
Explanation:
There are 6.022*10^23 calcium atoms in 1 mole of Ca
2.99*10^24/6.022*10^23
=4.97 moles
Answer:
4.97 mol
Explanation:
Given data:
Number of atoms of Ca = 2.99×10²⁴
Number of moles of Ca = ?
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
2.99×10²⁴ atoms × 1 mol / 6.022 × 10²³ atoms
0.497×10¹ mol
4.97 mol
what is the subscript of cl2
Are ionic compounds not carrying a charge?
Answer:
yes they carry charges
. The model shows Earth in several positions relative to the Sun. In which position is it winter in North America?
define atomic number
Answer:
the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
What is the enthaply of dissolution?
Answer:
The enthalpy change of solution refers to the amount of heat that is released or absorbed during the dissolving process (at constant pressure).
Explanation:
Write a Formula
Compound Name: Strontium Sulfate
Answer:
it's SrSO4
Explanation:
What order do they go in plz someone help
What is one example of pre-exising marine life?
dinosaur egg
shrimp burrow
leaf imprint
bird bone
Answer:
Shrimp burrow
Explanation:
Shrimp are types of sea life, whales eat them
I WILL MARK BRAINLIEST!!!!! !!
(picture included with one question ^^^^^^^)
Answer:
type D
balance form .b
Explanation:
Which of the following is true about mixtures and compounds?
OA. A mixture contains different substances that are not chemically combined with one another.
OB. A compound forms when different substances chemically combine to form a new substance.
OC. Mixtures and compounds are both made of two or more different substances.
OD. all of these
Answer:
All of the above
Explanation:
Convert 5 micrometers to meters
Plate movement is thought to be the result of what
Answer: Plate movement is thought to be driven by a combination of the motion of the seafloor away from spreading ridges due to variations in topography and density changes in the crust.
Hope this helps
Can someone pls answer quickly?
answer is atom.Hope it is helpful.
Answer:
Atoms are the smallest particles that made up matter.
Speed of 5km. Pls help
Answer:
It's either A. or B. Im going with B. since the person is walking a constant speed
Explanation:
acceleration is basically when someone or something is increasing in speed
2) Gas in a balloon occupies 3.3 L. What volume will it occupy if the pressure
is changed from 100 kPa to 90 kPa,
Answer:
The answer is 3.7 LExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we are finding the new volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
From the question we have
[tex]V_2 = \frac{3.3 \times 100000}{90000} = \frac{330000}{9000 } \\ = 3.666666...[/tex]
We have the final answer as
3.7 LHope this helps you
3 way to make bases
