Answer:
naphthalene aka mothball sublimes
How many moles are in 8.0 gram sample of C3H4
Answer:
0.18 mol C₃H₈
Explanation:
to find the mole you have to convert the 8.0grams into moles.
8.0g C₃H₈ 1 mol C₃H₈
1 44.0g C₃H₈
*Pretend that those are a table*
I got 44.0g because Carbon is 12.0g you multiply that 3 times because it has a subscript of 3 and do the same for Hydrogen (1.0 x 8) then add those which would be 44.0g.
1 mol of C₃H₈ = 44.0g C₃H₈
now just mulitply and divide them.
8.0g x 1 = 8.0
1 x 44.0g = 44.0
8.0/44.0 = 0.18 mol C₃H₈
What can the reader conclude about the effects of hurricanes?
They only cause damage near the equator.
They cause most of their damage when they reach land.
The damage is only bad if you are inside the eye of the storm.
People are safe from hurricanes if they stay inside of their homes.
How many grams equal 4.3 x 1024 atoms of oxygen (O2)?
Answer:
https://socratic.org/questions/how-many-grams-are-in-1-25-x-10-22-atoms-of-oxygen#403337
Explanation:
A bowling ball is let go from a height of 30 cm. What is the velocity of the
ball just before it hits the ground?
Select one:
о
0.30 m/s.
О
17 m/s.
O
24 m/s
a
1.3 m/s
Answer:
The answer is 0.30 m/s
Explanation:
i search it on
Se disuelven 10 g de acido carbónico H2CO3 en 150 g de agua. Determina la concentración % m/m de esa disolución?
The question is: 10 g of carbonic acid H2CO3 are dissolved in 150 g of water. Determine the% m / m concentration of that solution?
Answer: The% m / m concentration of that solution is 6.66%.
Explanation:
Given: Mass of solute = 10 g
Mass of solvent = 150 g
Formula used to calculate the %m/m is as follows.
[tex]Percent (m/m) = \frac{mass of solute}{mass of solvent} \times 100[/tex]
Substitute the values into above formula as follows.
[tex]Percent (m/m) = \frac{mass of solute}{mass of solvent} \times 100\\= \frac{10 g}{150 g} \times 100\\= 6.66%[/tex]
Thus, we can conclude that the% m / m concentration of that solution is 6.66%.
PHYSICAL CHANGE OR CHEMICAL CHANGE
1.When making a sauce, a chef boils the alcohol until it changes to a gas and leaves the pan.
2. A scientist adds high pressure to gaseous oxygen until it turns into a gas.
3. Hydrogen sets fire and burns when exposed to oxygen and a spark.
4. A person accidentally drops a mirror so that it shatters.
5. A child falls from a tree and breaks a bone.
6. As soon as you begin eating, your body starts to digest food. The process of digestion is a
7. After dipping a piece of a chicken into batter, a person puts it into a deep fryer. The process of frying chicken is a
8. When a person slices tomatoes before adding them to a salad, what type of change did the tomatoes experience
9. Sugar is dissolved completely into water.
10. A branch rots and decomposes after falling from a tree
Answer:
1.Chemical Change
2.Chemical Change
3.Chemical Change
4.Physical Change
5.Physical Change
6.Chemical Change
7.Chemical Change
8.Physical Change
9 Physical Change
10.Physical Change
Explanation:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula.
A supersaturated solution is said to contain
Explanation:
A solution that contains more than the maximum amount of solute that is capable of being dissolved at a given temperature.
I hope it helps
Answer:
A supersaturated solution is said to contain more solute than it can dissolve at that given temperature.
In what way may drugs be used to affect neurotransmitters?
Which substance is a type of biomolecule that can be used for energy storage and insulation? O A. Nucleic acid O B. Carbon dioxide O C. Lipid D. Protein
Answer:
Protein
Explanation:
Protein is used to make insulation (like fat) and is used to store energy taken form food (please tell me if this works)
Protein which is made up of amino acids is a type of biomolecule that can be used for energy storage and insulation.
What are amino acids?Amino acids are defined as the substances which are considered to be the monomers of proteins.Every amino acid has the same structure consisting of a central carbon which is bonded to an amino group , carboxyl group and a hydrogen.
Each amino acid also has another atom or a group of atoms bonded to the alpha carbon which are also known as the R group or the variable group of the side chain.There are 20 common amino acids present in natural proteins and each amino acid has the same backbone.
The sequence and number of amino acids determines protein's shape,size and also its function. Each amino acid is attached to the other by a covalent bond formed by a dehydration reaction.
Learn more about amino acids,here:
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Why is wind considered a renewable resource?
А
Wind will never stop being produced.
B
Wind energy is not useful.
с
There's a fixed amount of wind.
a
D
We are using wind too quickly.
Answer:
wind will never stop being produced
Explanation:
1. Calculate the mass of 1.000 mole of CaCl2
Show all your work. Answer in scientific notation when applicable.
Answer: 110 g/mol
Explanation:
First we need to find the molar mass of CaCl2 using the periodic table:
Ca: 40
Cl: 35 (Since Cl has a 2 at the end, multiply 35 by 2)
70+40= 110
Then multiply by amount of moles
110g×1.000mol = 110 g/mol
Unit 4 Assessment
Chemical Reactions
Multiple Choice Questions: Choose the best answer for each of the
following questions.
1. 2 H2O2 () 4 Mno." (aq) + 3 CIO2- (aq) 4 MnO2 (s) + 3 CIO, - (aq) + 4 OH
- (aq)
According to the balanced equation above, how many moles of CIO, - (aq)
are needed
to react completely with 20. mL of 0.20 M KMnO, solution?
(A) 0.0030 mol
(B) 0.0053 mol
(C) 0.0075 mol
(D) 0.0040 mol
2.
2 KCIO, (s) 2 KCI (s) + 3 02 (g)
According to the equation above, how many moles of potassium chlorate,
KCIO, must be decomposed to generate 1.0 L of Oz gas at standard
temperature and pressure.
Types of meaning and give me examples in arabic and english about
How many moles of aluminum nitrate can be produced with 0.68 moles of lead nitrate?
i have no idea can somebody help me too
What are 3 kinds of moles
A certain sample of gas wieghing 22.8g contains 6.22g of carbon and an unweighed quantity of oxygen. What is the percentage composition of this gas
Answer:
16.58
Explanation:
22.80
-
6.22
_____
16.58
law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed. Therefore, the quantity of mass is conserved over time.
I hope that helps
he diagram shows a device that uses radio waves.
Two radio towers. The towers are equal distance apart with an arrow between them. The left tower is labeled X. The right tower is labeled Y. The arrow is pointing from Tower X to Tower Y.
What is the role of the part in the diagram labeled Y?
modulate, amplify, and send out waves
capture, amplify, and demodulate waves
change the amplitude and frequency of waves
change the pulse and phase of waves
Answer:
b
Explanation:
What force works against friction?
inertia
kinetic
potential
Answer:
kinetic is the correct answer. can I get brainliest please
Will give brainliest please help!!!
Answer:
0
Explanation:
im pretty sure its 0 pls mark me as brainliest
Si 4 L de un gas están a 0,79 atm de presión, ¿Cuál será su nuevo volumen, si aumentamos la presión hasta 1,05 atm?
Respuesta:
3 L
Explicación:
Paso 1: Información provista
Volumen inicial del gas (V₁): 4 LPresión inicial del gas (P₁): 0,79 atmVolumen final del gas (V₂): ?Presión final del gas (P₂): 1,05 atmPaso 2: Calcular el volumen final del gas
Si suponemos que el gas se comporta como un gas ideal y que la temperatura permanece constante, podemos calcular el volumen final del gas usando la ley de Boyle.
P₁ × V₁ = P₂ × V₂
V₂ = P₁ × V₁ / P₂
V₂ = 0,79 atm × 4 L / 1,05 atm = 3 L
Which biome has 4 distinct seasons?
A. Desert
B. Rainforest
C. Deciduous Forest
D. Tundra
C. Deciduous Forest
has 4 distinct seasons...
Answer: C. Deciduous Forest
Explanation:
I just searched it up.. and it's mostly where I live which has 4 distinct seasons.
If 24 grams of sodium chloride reacts with an excess amount of magnesium how many grams of sodium oxide will be produced
In a chemical reaction, mass is conserved. This means that...
O A. The mass of the reactants stays the same during a chemical reaction
OB. The mass of the products stays the same during a chemical reaction
OC. The tpye and number of atoms in the reactants equals the type and number of atoms in the products
OD. The mass of the products is always twice the mass of the reactants
Answer: D
Explanation:
does anyone know if these are correct? if not can anyone tell me what the answers are?
Answer:
16. correct
17. correct
18. correct
19. correct
HELP QUICK Which of the following planets spins/rotates faster than earth?
A) Saturn
B) Jupiter
C) Venus
D) Mars
Answer:
B
Explanation:
Jupiter is the fastest spinning planet.
Why do you think earthquakes and volcanoes occur in patterns?
Answer: ANSWER BELOW
Explanation:
Because that is the way it works.
HELP
The potential energy diagram for a reaction starts at 180 kJ and ends at 300 kJ. What type of reaction does the diagram best represent? (5 points)
Exothermic reaction
Endothermic reaction
Reaction between two solids
Reaction between two liquids
Answer:
Exothermic reaction
Explanation:
An exothermic process releases heat, causing the temperature of the immediate surroundings to rise
Answer:
Endothermic
Explanation:
How does the [H+] concentration change in a sample as the pH scale decreases 2 units? (make sure to say whether it goes up or down and by how much)
How many grams are in 11.9 moles of potassium sulfide, K2S?
What is the Hso for NaCl → Na+ + C1-? The lattice energy is –788 kJ/mol, the enthalpy of hydration for Na+ is -410
kJ/mol, and the enthalpy of hydration for cr- is -313 kJ/mol. Use AH sor=-Har + Hhydr.
A. -1,511 kJ/mol
B. -855 kJ/mol
C. 65 kJ/mol
D. 1,511 kJ/mol
Answer:
c
Explanation:
Which functional group is shown below?
Answer:
b
Explanation:
a p e x :)
The an ester functional group is given in the picture.
What is an ester?When carboxylic acid and alcohol react together in the presence of acid or alkaline then it form ester.An organic compound (ester)react with water to form carboxylic acid and alcohol.The ester group contain [tex]-COOR[/tex] .Example: [tex]RCOOR[/tex]Where R = Alkyl group.
What is functional group?A substituent ( group of atoms ) in a molecule that responsible for characteristic chemical reaction of the molecules.learn about ester here.
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