Work is said to be done when force moves a distance and the direction of motion is in the direction of applied force.
What is work done?Work done is defined as the product of applied force and the distance which the applied force moves.
According to Newton's second law of motion the acceleration of a body is inversely to its mass ut directly proportional to the force and takes place in the direction of the applied force.
Therefore, work is done when force moves a distance and the direction of motion is in the direction of applied force.
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Which of the following helps explain why experiments involving speed and velocity are important? (1 point)
Experiments involving speed and velocity are important because they have not been investigated much and scientists still do not fully understand how speed and velocity are related
Experiments involving speed and velocity are not important because they have already been thoroughly investigated by scientists and there is nothing more to learn.
Repeated experiments with airplanes and how their velocity changes as a result of environmental conditions like wind can help scientists develop a model for flight paths and launch times to
minimize fuel usage
O Repeated experiments that change motivational foods for tortoises on tracks can help scientists determine preferred eating habits
The statement that explain the important of experiment with speed and time is
Repeated experiments with airplanes and how their velocity changes as a result of environmental conditions like wind can help scientists develop a model for flight paths and launch times to minimize fuel usage.
What is an experiment?An experiment is a scientific procedure or technique carried out in a place to discover or test the validity of something.
Velocity refer to the rate of change of body's position and direction in respect to time.
Speed is the distance travel by an object in respect to time.
Therefore, The statement that explain the important of experiment with speed and time is
Repeated experiments with airplanes and how their velocity changes as a result of environmental conditions like wind can help scientists develop a model for flight paths and launch times to minimize fuel usage.
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Denzel has a flask containing a mixture of rocks, soil, iron filings and salt. He needs to separate the four components of the mixture. Create a method to successfully separate each of the components of the mixture. HINT: use their physical and/or chemical properties.
Answer:
Sift the mixture to separate the rock from the iron filings, soil and salt.
You can then use a magnet to separate the iron filings from the salt and soil.
Afterwards, you can pour water into the remaining salt- soil mixture. Salt will dissolve but the soil will remain at the bottom of the water.
If you want to separate the salt from the water, you can boil it till all the water evaporates. The only thing that'd be left in the pan is salt.
How many moles of water (H20) are produced when 2 moles of KMnO, react with plenty of HCI? Show work if can will give most points :) !!
I hope this helps, you can ask any questions for clarification
Is god real I don’t really no but say yes
Answer:
Yes
Explanation:
We have been created by him therefore we would not have been created if there was no God.
sodium oxide can react with water to produce sodium hydroxide. in the reaction, how many moles of sodium hydroxide will be produced.
Answer: 2 mol of NaOH
Explanation:
The balanced chemical equation for the reaction is:
Na2O + H2O --> 2NaOH
Looking at this, we can see that 1 mol of Na2O will react with 1 mol of H2O to produce 2 mol of NaOH
PLEASE HELPPPPP I WILL GIVE BRAINLIEST!!!!!
How many grams of ammonium sulfate can be produced if 2500.0 g of H2SO4 react with excess NH3 according to the equation 2NH3(aq) + H2SO4(aq) → (NH4)2SO4(aq)? Calculate the percent yield if 3100 g (NH4)2SO4 were actually produced.
-Calculate the theoretical yield of ammonium sulfate.
-Calculate the percent yield for the associated question
-Write the unit for the theoretical yield (see related question)
If 2500 grams of H2SO4 react with excess NH3 according to the illustration, the amount of ammonium sulfate that can be produced would be 3,370.92 grams. If only 3100 grams of ammonium sulfate were produced, the percentage yield would be 91.96%.
Stoichiometric calculationsFrom the equation of the reaction:
2NH3(aq) + H2SO4(aq) → (NH4)2SO4(aq)
The mole ratio of H2SO4 and (NH4)2SO4 is 1:1
Mole of 2500 grams H2SO4 = 2500/98 = 25.51 moles
Equivalent mole of (NH4)2SO4 = 25.51 moles
Mass of 25.51 moles (NH4)2SO4 = 25.51 x 132.14 = 3,370.92 grams
If 3100 g of (NH4)2SO4 were actually produced, the percentage yield would be:
Percent yield = 3100/3370.92 x 100 = 91.96%
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Which list of phases of H2O is arranged in order of increasing entropy
Answer: Solid, liquid, and gas are the three phases of H2O that are listed in order of increasing entropy.
The haphazard motion of water molecules in molecular water gives it the maximum flexibility.
Using the notation just described, represent a cell based on the following reaction:
ClO3−(aq)+3Cu(s)+6H+(aq)→Cl−(aq)+3Cu2+(aq)+3H2O(l)
Pt is used as an inert electrode in contact with the ClO3− and Cl− .
Drag the appropriate labels to their respective targets. For neutral species, leave the pink target blank.
The cell notation of the redox reaction between Cu and ClO₃⁻ is:
Cu/Cu²⁺//ClO₃⁻//Cl⁻/PtWhat is a voltaic cell?A voltaic cell or electrochemical cell is a device which produces electricity from chemical reactions occuring within the cell.
The reactions occuring in a voltaic cell are redox reactions.
Oxidation occurs at the anode while reduction occurs at the cathode.
In the given reaction between Cu and ClO₃⁻ as shown below:
ClO₃⁻ (aq) + 3 Cu (s) + 6H⁺ (aq) → Cl⁻ (aq) + 3 Cu²⁺ (aq) + 3 H₂O (l)Cu is oxidized as follows: 3 Cu (s) → 3 Cu²⁺
ClO₃⁻ is reduced as follows: ClO₃⁻ (aq) → Cl⁻ (aq)
The voltaic cell notation is as follows where Pt is used as an inert electrode in contact with the ClO₃⁻ and Cl⁻:
Cu/Cu²⁺//ClO₃⁻//Cl⁻/PtTherefore, the cell notation of the redox reaction between Cu and ClO₃⁻ shows that Cu is oxidized while ClO₃⁻ is reduced.
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state 3 commercial uses of oxygen
Answer:
Brainliest Please !!!!!
A 6.39L balloon filled with gas is warmed from 239.3K to 305.9K. What is the volume of the gas after it is heated?
Answer:
69.271837183727718371
What are 3 types of insects that belong to Phylum ?
Answer:
3 examples are beetles, a fly, and bees. Others include ants lady bugs and butterflies
Explanation:
a
Scientists have observed that the average surface temperature of the Earth has been increasing. This increase has
affected the oceans. Glaciers and ice sheets melt, and water from this melting process becomes part of the oceans.
The increasing temperature of the Earth's surface also warms ocean waters. As a result, the volume of the oceans
expands. These two events affect sea level.
What would happen to sea level if the average surface temperature trend that was observed since the 1960s
continues?
A) Sea level will rise, then will suddenly fall.
B) Sea level will remain the same.
C) Sea level will continue to fall.
D) Sea level will continue to rise.
Please select the best answer from the choices provided
O A
OB
Save and Exit
Next
Submit
Mark this and return
Answer:
D) Sea level will continue to rise
Pots A and B both have plain soil, bean seeds, and the same amount of light. Pot B receives more water (see table). After 50 days the plants are measured. Based on the data, which of the following conclusions can NOT be drawn from the data table?
A plant that receives more water will have more mass
The amount of water a plant receives affects its growth
The taller a plant is, the more mass it has
A plant that receives more water will grow t
A. water per day: 20 m/ height: 24cm/ mass: 3.1g B. Water per day: 60 ml/ height: 24cm/ mass: 9.6g
I think that the answer to this question is the third option. These two plants are of the same height but plant B has more mass. So therefore the statement is not true.
If this is a multiple-choice, then I would also select the fourth option along with the third. Plant B received more water, but it is the same height as plant A.
I hope my answer is satisfactory, and that I was of help to you.
-Toremi
What is the equilibrium constant for the reaction at 644 K ?
Based on the Law of Conservation of Mass, what's the minimum amount of Magnesium that will react with 32g of Oxygen to produce 80.6g of Magnesium Oxide?
mass before reaction = mass after reaction
Mg + O = MgO
Mg + 32 = 80.6
Mg = 80.6 - 32 = 48.6 (a)
What is the name of an isotope with 23 protons and 25 neutrons?
Select one:
Cadmium
Vanadium
Chromium
Manganese
Answer: Vanadium
Explanation:
What’s the answer for this?
Answer:
it will fall then rise and return to ×
which of the following changes different colours in alkalis,acids,and neutral substances?
A red litmus paper
B Blue litmus paper
C universal indicator
D all of the above
1. In sheep, a gene with two alleles decides wool color. The allele for white wool is
dominant to the allele for black wool. If two heterozygous sheep mate, what
percentage of the sheep will have white wool? Record your answer as a
percent.
White wool
Black wool
HINT: Create a Punnett square on scratch paper to determine the answer.
This is defined as a variant form of a gene. We were told that allele for white wool is dominant to the allele for black wool and two heterozygous sheep mated.
When we cross Ww and Ww we get WW, Ww, Ww, ww. Since white is dominant then the percentage is 3/4 = 75 percent.
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what are the products for the following equation?
ZnBr2 + F2 ->
Answer:
The products to ZnBr2 + F2 -> Znf + Br2
When we balance this equation we get the following:
2ZnBr2 + F2 -> 2Znf + 2Br2
Hope this helps !!!
A sample of an ideal gas has a volume of 2.22 L at 284 K and 1.11 atm. Calculate the pressure when the volume is 1.95 L and the temperature is 305 K.
Answer: 1.36 atm
Explanation:
How many moles of lead chloride pbCl2, will be produced if 10.0 moles of Orion chloride FeCl33 reacted
Answer:
0.72 moles of hydrochloric acid are needed to completely react with 0.36 mol of lead.
Explanation:
I hope this helps you! :)
In 1-2 sentences, describe what happens to atoms of a compound when a chemical reaction occurs
In a chemical reaction, bonds between atoms in the reactants are broken and the atoms rearrange and form new bonds to make the products.
The atoms get rearranged into new substances.
Question 6 of 10
What does it mean when a reaction is spontaneous?
O
A. The reaction requires added energy.
B. The reaction goes to completion.
C. The reaction occurs rapidly.
O O
D. The reaction happens by itself.
SUBMIT
Answer:
D
Explanation:
Does not require energy ...may be slow or fast....
Anyone know this? Cuz I don’t this one is
Answer:
its legislative.
please help I'm stuck on this!
What effect does sunlight have on CO2 molecules?
Answer:
Carbon Dioxide is not affected by sunlight. But the radiation changes direction when it hits a carbon dioxide molecule
Explanation:
Which two organisms are most likely to be competitors?
chipmunk, cow
snake, hawk
snake, badger
chipmunk, badger
complete and balance the following equation b. Br2 + Nacl
Please, I need this now.
Drag each label to the correct location on the image.
Match each situation to the circuit diagram that represents it.
Answer: if anyone needs it <3
Explanation:
4. What is the movement of blood through your blood vessels called?
circulation
digestion
nervous
Answer:
circulation
Explanation:
The movement of the blood through the heart and around the body through the narrow vessels is called circulation which makes up the cardiovascular system.
Answer:
Circulation
Explanation
digestion is the process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body and its the only one that makes sence
