Answers
Related Questions
What is the purpose of a catalyst?
Answers
Answer:
option c
Explanation:
as catalyst increases the reaction while activation energy is inversely proportional to rate of reaction, so option c is correct
The purpose of a catalyst to lower the activation energy of a reaction.
What is catalyst?A type of chemical that, without becoming consumed by the process, speeding a chemical reaction or reduce the temperature as well as the pressure required to initiate one. The addition of a catalyst to speed up a reaction is known as catalysis.
What is activation energy?The bare minimum additional energy needed by a reactive molecule to transform into a product is considered as activation energy.
The purpose of a catalyst is to lower the activation energy of a reaction.
Therefore, the correct answer will be an option (C).
To know more about catalyst and activation energy.
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True or false most oils tend to dissolve best in nonpolar solvent
Answers
Answer:
true
Explanation:
water is polar, and oil and water do not mix. nonpolar solvents do not like or mix with water, so they do not dissolve in water. so it's true.
According to the Heisenberg uncertainty principle, it is impossible to know both the __ and __ of an electron simultaneously.
a. mass and charge
b. position and velocity
c. mass and position
d. velocity and charge
Answers
Answer:
C
Explanation:
It's simple because there were so many quantitative analysis of error and they didn't had the kind of observations as we have now
What do all of the inventors discussed in this lesson have in common?
1. All of the inventors can be characterized as problem-solvers.
2. All of the inventors used engineering principles to create new things.
3. All of the inventors created new things as children.
4. All of the inventors needed mathematics principles to formulate solutions.
PLEASE I NEED helppp
Answers
what volume of 0.20 M NaCl contains 10.0 g
Answers
Answer : 0.862 liters
pls help 6th grade science
Answers
Newton's first law is demonstrated in what station?
Answers
Answer:
hope this helps!
Explanation:
This law states that a still object will stay still unless a force pushes or pulls it. A moving object will stay moving unless a force pushes or pulls it. Gravity and friction are forces that constantly push and pull the "stuff" on earth. So, when we roll a ball, it slowly comes to a stop.
Give an example of gravitational potential
Answers
A raised weight.
Water that is behind a dam.
Have a nice day!
Answer:
When something has a high position, its gravitational potential energy is high. For example, a book on a high bookshelf has higher potential energy than a book on the bottom shelf because it has farther to fall. ... A book on a table before it falls. A child at the top of a slide.
Explanation:
U=m g h
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How many moles are in 78 grams of Chlorine
gas (CI)?
Answers
Answer:
Grams of chlorine gas to moles
The SI base unit for amount of substance is the mole. 1 grams Chlorine is equal to 0.028206357713029 mole.
Explanation:
If one mole of an unknown substance is 200.59 g/mole, what is the mass of 0.33 moles of that substance?
Answers
Answer: 66.83g
Explanation: (200.59 g/mole = Hg)
0.33 moles = 66.83g
What is the oxidation number for Ba?
A. +1
B. -2
C. +2
D. -1
Answers
Answer:
+2
Explanation:
Ba is present in group 2 and group 2 show + oxidation state
An 240. mL sample of oxygen at 90.00C and was cooled at constant pressure
until it has a volume of 450.0 mL. What was the final Celsius temperature of this
gas? *
Answers
The final temperature : T₂ = 680.625 K
Further explanationGiven
V₁=240 ml
T₁ = 90 + 273 = 363 K
V₂ = 450 ml
Required
The final temperature
Solution
Charles's Law
When the gas pressure is kept constant, the gas volume is proportional to the temperature
[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
Input the value :
T₂ = V₂T₁/V₁
T₂ = 450 x 363 / 240
T₂ = 680.625 K
The diagram illustrates the water cycle.
Parts of the water cycle labeled U through Z. U: Water moving from a lake into the clouds. V: Clouds. W: Water falling from clouds as rain and snow. X: Water moving from ground to the clouds. Y: Water flowing down the mountainside into a lake. Z: Underground water going into lake.
Which process occurs at location W?
precipitation
evaporation
condensation
transpiration
Answers
Answer:
The Answer is Precipitation
Explanation:
Look it up on and then also got it right on the Unit Test and the Quiz.
The diagram illustrates the water cycle, the process that occurs at location W is precipitation. The correct option is a.
What is precipitation?Precipitation is any product of the condensation of atmospheric water vapour that falls under gravitational pull from clouds. The main forms of precipitation include drizzle, rain, sleet, snow, ice pellets, graupel and hail.
Precipitation occurs when a portion of the atmosphere becomes saturated with water vapour so that the water condenses and precipitates or falls. Thus, fog and mist are not precipitation but colloids, because the water vapour does not condense sufficiently to precipitate. Two processes, possibly acting together, can lead to air becoming saturated: cooling the air or adding water vapour to the air. Precipitation forms as smaller droplets coalesce via collision with other raindrops or ice crystals within a cloud. Short, intense periods of rain in scattered locations are called showers.
Precipitation is a major component of the water cycle and is responsible for depositing the fresh water on the planet.
Learn more about precipitation, here:
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How many grams of water are produced when oxygen reacts with an excessive amount of propane (C3H8)?
Answers
Answer:
From the equation you will see that 1 mol of propane generates 4 mols of water.
Since the molar mass of water
M ( H2O)=2×1+16=18g/mol
2 mol propane will generate
2 ×4×18=144g of water
Explanation:
Since the molar mass of water
M ( H2O)=2×1+16=18g/mol
2 mol propane will generate
2 ×4×18=144g of water
Question 9(Multiple Choice Worth 1 points)
(05.03 LC)
Which of the following stars usually shine with the dimmest of light?
O Dwarfs
O Giants
O Main sequence stars
O Supergiants
Answers
HELP ASAP DUE IN 5 MINUTES
Answers
the second one i think, hope this helps
Answer:
a
Explanation:
HELPPP
i’ll give brainly :)))
Answers
Answer:
12. 2.9 g= 0.0029 13. 14.7 L = 14700 ml
14. The chemical formula of magnesium hydroxide is Mg(OH)2, and its molar mass is 58.32 g/mol.
Explanation:
The air we breathe contains different individual gases (mostly nitrogen and oxygen). Which of the following correctly describes the air we breathe?
a
element
b
compound
c
mixture
d
none of these
Answers
Let me know if you have any questions
ILL GIVE U BRAINLYSIT
Answers
Answer:what?
Explanation:what? Huh
WILL MARK BRAINLIEST!!!
*please answer correctly*
Answers
Answer:
Your answer is 344,758.168519
Explanation:
Plz help me on this
A student has a 6 gram sample of sodium chloride (NaCl) solid. How many moles of sodium chloride are contained in this sample?
Answers
The number of moles of NaCl = 0.103
Further explanationGiven
6 gram sample of NaCl
Required
moles
Solution
The mole is the number of particles contained in a substance
1 mol = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
mole = mass : molar mass
Molar mass of NaCl = 58.5 g/mol
Input the value :
mole = 6 g : 58.5 g/mol
mole = 0.103
HELP! URGENTLY NEEDED! I NEED THIS ANSWER IN 5 MINUTES AND PERSON WHO HELPS GET THE ANSWER RIGHT GETS 25 POINTS!!! PLEASE I AM FAILING THIS CLASS AND NEED SO MUCH HELP!!!!
The coefficient/s will balance the chemical equation CH4 +O2 -------» CO2 + H2O is
a
1, 2, 1, 2
b
2, 1, 1, 2
c
2, 2, 1, 1
d
1, 1, 1, 2
Answers
Answer:
hey miss
Explanation:
The coefficients : a. 1,2,1,2
Further explanationGiven
Reaction(unbalanced)
CH4 +O2 -------» CO2 + H2O
Required
The blanced equation
Solution
Give a coefficient
CH4 +aO2 -------» bCO2 + cH2O
Make an equation
C, left=1, right=b⇒b=1
H, left=4, right = 2c⇒2c=4⇒c=2
O, left=2a, right=2b+c⇒2a=2b+c⇒2a=2.1+2⇒a=2
The equation becomes :
CH4 +2O2 -------» CO2 + 2H2O
Something that is made out of natural resources for human use is called? Synthetic Resource Natural Resource Materials Living Organisims
Answers
Answer:
Natural Resource
Explanation:
A natrual resource is something that was created when Earth was first made. They were intended to fulfill human needs when they needed them. An example of a natural resource can be water, because we will need water to survive.
Which of the following would happen if Earth's moon were half the size that it is now? O The oceans' tidal variations would be smaller because the Moon would exert less gravitational pull on Earth's oceans. O The oceans' tidal variations would be greater because the Moon would exert less gravitational pull on Earth's oceans. O The oceans' tidal variations would be greater because the Moon would exert more gravitational pull on Earth's oceans. The oceans' tidal variations would be smaller because the Moon would exert more gravitational pull on Earth's oceans. & Previous
Answers
Answer: A. The oceans‘ tidal would be smaller because the moon would exert less gravitational pull on earths oceans.
Explanation:
i got it right :)
DESPERATE WILL GIVE BRAINLIST AND THANKS (PLEASE HURRY )
Look at the Punnett square below which shows the cross between two frogs. Green is the dominant skin color while brown is the recessive skin color. What are the phenotype probabilities?
Question 8 options:
50% green, 50% brown
25% green, 25% brown
100% green, 0% brown
75% green, 25% brown
Answers
B.Green is more common than brown so more green genes are passed on. (25%)
C.The gene for green color is dominant over the gene for brown color. (0%)
D.The gene for brown color is dominant over the gene for green color. (100%)
Why is much of the ocean floor so difficult to see?
Answers
Answer:
because ocean currents deposit sediment on the ocean floor.
During a strenuous soccer game, a student is sweating a lot. Which of these would help her maintain her water balance?
A. drinking more water or other fluids
B. wiping off perspiration with a towel
C. increasing breathing and heart rate
D. refraining from drinking any water
Answers
Answer:
A
Explanation:
because your body needs to have an intake in the volume of liquids, and when you sweat it secretes the water from your body
✨✨What’s 2 similarities and 2 differences between the Earths layers and the atmospheric layers? ✨✨
‼️DONT COPY OFF LINE PLEASE ‼️
Answers
Answer:
Differences: Earth's atmosphere has 5 main layers where as atmospheric layers thins out in each higher layer.
Similarities: They both have multiple layers.
Explanation:
Sorry I only have 1 difference and similarity.
Learning Task 2: Fill in the blanks. Write your answers
Answers
How many kilo joules of heat are required to the decompost 1.96 mol Nah I 3(s)
Answers
Heat required = = 126.42 kJ
Further explanationGiven
1.96 mol NaHCO₃(s)
Required
Heat needed
Solution
Reaction( decomposition of Baking soda (NaHCO₃) :
2NaHCO₃ (s) + 129 kJ ⇒ Na₂CO₃ (s) + H₂O (g) + CO₂ (g)
For 2 mol NaHCO₃ , heat needed = 129 kJ
conversion factor :
[tex]\tt \dfrac{129~kJ}{2~mol}[/tex]
So for 1.96 mol :
= 1.96 mol x (129 kJ/2 mol)
= 126.42 kJ