NEED HELP ASAP
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Answer:
True, False, True, and False
Explanation:
In a chemical reaction, __________ are the substances present after the reaction.
Answer:
products
Explanation:
Explanation: Substances present BEFORE a reaction occurs are described as reactants. Substances present AFTER a reaction has occurred are described as products.
How much energy is required to completely melt a 250 gram ice cube that is already at 0 degrees Celsius? Show your work & units. Expected Answer = 83,500 J
Answer:
Q = 83500J
Explanation:
[tex]Q = L_{ice} *m[/tex]
[tex]L_{ice} = 3.34*10^{5} \frac{J}{kg}[/tex]
[tex]m = 250g = 0.25kg[/tex]
[tex]Q = (3.34*10^{5} \frac{J}{kg})*(0.25kg)[/tex]
[tex]Q = 83500J[/tex]
ok so the question is Sort the processes based on the type of energy transfer they involve. condensation
freezing
deposition
sublimation
evaporation
melting and the catigoreies are thermal energy add or thermal energy removed.
Maybe evaporation???????????????
Answer:
Maybe evaporation and sublimation??????????????????????
Explanation:
Compare and contrast convection and conduction. Cite at least 1 real-life example to support your answer.
Answer:
Convection is different because it's through the movement of a gas or a liquid. But conduction is through direct contact.
After a car is turned on, the engine becomes hot.
Hope this helps!
The Newton is the SI unit for ____.
temperature
density
weight
mass
Answer:
Mass
Explanation:
The bond between Hydrogen and Chlorine would be ???
Answer:
chlorine and hydrogen atoms form a single covalent bond. in hydrogen chloride gas because the electrons are shared, not transferred from one atom to another.
why is Galileo Galilei impotant?
Answer:
He provided a number of scientific insights that laid the foundation for future scientists. He also improved telescope that helped further the understanding of the world and universe.
Explanation:
Answer:it’s because Galileo Galilei is pretty much the father of today’s modern science
Explanation:
I hope this helps :)
Need help with this.
Answer:D
Explanation:
Answer:
here the answer would be D
Explanation:
if the two substances together have a different weight then the substance split but added together then this suggest that a new substance with a whole new mass was formed.
Need help with this.
Answer:
D
Explanation:
because it is changing to its own compound of chemicals.
Can someone please answer these 2 for me :)) I WILL GIVE BRAINLISTTTTT
gold is the piece of metal which have larger mass.
Explanation:
because it is reactive in nature than copper
A pitcher throws a softball toward home plate. When the ball hits the catcher’s mitt, its horizontal velocity is 32 meters/second. The softball’s velocity goes to 0 meters/second in 0.8 seconds when caught. If the softball has a mass of 0.2 kilograms, what’s the force of the impact? Use F = ma, where .
Answer:
To calculate the force of impact F, first lets calculate the acceleration a of the ball:
a=v/t where v is the velocity of the ball and t is time
a=32/0.8=40 m/s²
To get the force F we need the Newtons second law:
F=m*a where m is the mass of the ball and a is the acceleration.
F=m*a= 0.2*40 = 8 N
So the impact force is F= 8 N.
Explanation:
Help me out please? Thank you!
Answer: Continental climates are classified by whether that fluctuates a lot. Hot summer, Cold winters and Little rainfall are all characteristics of Continental Climates
Explanation:
If all three metals were exposed to extremely high temperatures, which would be the last to melt?
(gold, mercury,copper)
I WILL GIVE BRAINLIST!!!
Answer:
copper
Explanation:
because copper melts at 1,083
gold at 1 064
mercury at - 38
The diagram shows a food web in a grassland.
What best describes the role of the grasshopper in the food web?
Group of answer choices
A primary consumer that is food for the lizard and hawk
A secondary consumer that is food for the lizard and hawk
A primary consumer that is food for a single predator, the lizard
A secondary consumer that is food for a single predator, the lizard
Answer:
I think it is a sorry if i'm wrong
Explanation:
help please!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
HCl , Chocolate Milk , NaCl + H2O, Sand + H2O , Tea + Sugar
Explanation:
here the answer Deku
Cindy pours cool milk into a hot bowl of oatmeal and then stirs it with a room-temnperature spoon. Which substance will
have heat flow from it to the other substances?
O the milk
O the spoon
O the oatmeal
O the surrounding air
Which type of graph would best represent data from this experiment: Measuring the growth of a plant over 2 weeks? Question 1 options:
A. Line graph
B. Bar graph
C. Circle graph
Specific heat and thermal Energy question. Will give brailiest. 30 points please answer!! ASAP
A 200 g sample of water at 60.0 degrees Celsius is heated to water vapor at 140.0 degrees Celsius. Expected Answer = 501,440 J Before trying to solve this problem, explain:
what is happening to the water from 60.0 degrees Celsius to 100.0 degrees Celsius?
what happens at 100.0 degrees Celsius?
what happens from 100.0 degrees Celsius to 140.0 degrees Celsius?
Then solve the full problem, showing work & units.
Please help 20 points!
QUICK ANSWER THIS
Aerobic Respiration is the release of energy from food ________ the use of oxygen
A.With
B.Without
Answer:
A. with.
Explanation:
helpppp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
A.
Explanation:
thnx for the brinliest
anybody wanna help?????
Answer:
straight line down then left and right that should be it
Explanation:
Compare the chemical reaction that causes the Statue of Liberty to look green with the chemical reaction that causes a bike to rust.
Both the situations are examples of corrosion. The green colour seen in statue of Liberty is due to the copper oxide formation whereas the resulting in bike parts is due to the formation of iron oxide in the surface.
What is corrosion?Corrosion is a chemical process by which the metals are destroying and change in colour. Metal surface when open to air or water will react with the oxygen forms corresponding oxides.
Corrosion is an electrochemical process where the oxygen acts as the anode and the metal surface cathode where the oxide deposits and the colour changes. Materials containing iron will react with oxygen forms a red iron oxide called rust which then completely corrode the metal.
Similarly, the statues are made of metal alloys containing copper. Copper also reacts with air or water forms the copper oxide which is green in colour that is why the statues are turning to a gree patchy colour over time.
To find more about corrosion, refer the link below:
https://brainly.com/question/489228
#SPJ2
what is one-way water moves through the nonliving parts of an ecosystem during the water system?
Answer:
Water moves through the help of living organisms in an ecosystem. ... Plants absorbs water through their root system and loss by transpiration. Water also moves through the living organisms in an ecosystem. Other nonliving processes such as evaporation, precipitation, water returns back into the atmosphere.
Explanation: welcome
Answer:
evaporation
Explanation:
Lucia is given a picture of several cells. Her task is to identify the cells as plant or animal
cells. How can she pinpoint the cells that are plant cells?
A. She should look for a cell membrane surrounding the cell.
B. She should look for cytoplasm that is filled with organelles.
C. She should look for a large nucleus in the center of the cells.
D. She should look for ovals full of green dots called chloroplasts
Answer:
D She should look for ovals full of green dots called chloroplasts
Explanation:
Plant cells are the only cells that will have chloroplast as it helps the plant go through photosynthesis.
ILL GIVE 30 POINTS TO THE BRAINIEST
How does a balanced chemical equation prove the Law of Conservation of matter?
Answer:
Every chemical equation follows to the law of conservation of mass, which states that matter cannot be created or destroyed. When you have an equal number of atoms of an element is present on both sides of a chemical equation, the equation is balanced therefore it is following the law of conservation of mass.
Explanation:
Answer:
A balanced chemical proves the Law of Conservation of Matter because the law stats that matter cannot be created nor destroyed. so, in every chemical reaction the amount of matter will stay the same in the product as it did in the reactant.
In other words, balanced chem equations show that mass in conserved in chemical reactions
hope this helped:)
Explanation:
How much energy is required to completely vaporize 250 grams of liquid water that is already at 100 degrees Celsius? Show your work & units. Expected Answer = 565,000 J
Answer:
564100J (~ 565000J) of heat energy is required.
Explanation:
The enthalpy of vaporization of water is 2256.4J/g, meaning that 2256.4J of heat is required to convert 1 gram of water at 100 degrees Celcius to steam at 100 degrees Celcius.
In your case, we have 250g of water at 100C and we want to vaporize it to steam (also at 100C).
This requires ΔH = 2256.4(250) = 564100J of heat energy.
Which statement best describes the message of the poem? *
It about icruas flight pls help and it is the poem not the myth
A Icarus flew too far for no good reason.
B Icarus learned something by flying too far.
C Icarus had a habit of flying too far.
D Icarus was excited by flying too far.
