Calculate the ΔHrxn for the following
Fe2O3(s)+3CO→Fe(s)+3CO2(g)
Given:
4Fe(s)+3O2(g)→2Fe2O3(s)
ΔH = -1645.36
2CO2(g)→2CO(g)+O2(g)
ΔH = 567.66
Answer: alright now listen fe203(s)=567.66666
Explanation:
Give an example of an object that holds its electrons loosely because it is a conductor different from what is listed on the PowerPoint
Answer:
Points
Explanation:
Now
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Gerald is fishing. He uses a bobber that floats on the surface to show him if the line is being moved, and a lure that sits below the surface to attract fish. Which statement accurately describes the densities of these two items?
1)The bobber and lure are more dense than the water.
2)The bobber and lure are less dense than the water.
3) The bobber is more dense than the water, and the lure is less dense than the water.
4)The bobber is less dense than the water, and the lure is more dense than the water.
Answer:
4
Explanation:
in order for the bobber to float,it must be less dense, and for the line to sink, it must be more dense.
Answer:
number 4
Explanation:
sorry if wrong
Which example describes an inherited trait that cannot be determined by observing an individual?
how is the preodictable arranged by atomic mass, coloms , and rows
answer:an arrangement of elements in columns, based on a set of properties that repeat from row to row
Explanation:
hope this helps love <3
Answer:
I dont get it
Explanation:
ATOMS WE LOVE ATOMS, answer this and get points , also thx for your help :)
Answer:C because they have to I have the same mass before and after the equation.
Explanation:
HOPE THIS HELPED!! :) ;) <3<3
An occluded front moves over farmland that has been experiencing drought conditions.
Which change in weather will this front likely bring?
violent, short-lived thunderstorms
an extended period of rain
more dry air and sunny skies
gray skies, but no rain
Compare and contrast the applications and benefits of circle graphs and bar charts
Answer:
benefits of circle graph- an easier visual representation
benefits of bar charts- shows better accuracy
why does gold sink and wood float when they have similar volumes? Include what is happening with the mass size and arrangement of atoms
explain density in your own words
gold sinks and wood floats because____
Answer:
Gold has a density higher than water so it sinks. Wood has a density lower than water so it floats.
Explanation:
Wood has less packed particles compared to gold. Gold had more packed molecules.
Answer:
Solids are not the only substances that have density. Water and air have density that changes too. Density plays a key role in determining whether objects will sink or float in fluids and gases. Gold sinks in water because gold is denser than water, and pine floats in water because pine is less dense than water.The particles in wood are not so closely packed. There is more space in between the particles and fibres, which gives wood its low density.
Thank you and please rate me as brainliest as it will help me to level up
What type of wave is represented in the diagram?
Answer:
b
Explanation:
A student lists three temperature measurements: 200°F, 200°C, and 200 K. Of the three measurements, 200 K is the highest temperature. true or false
Answer:
pointa
Explanation:
Answer:
False
Explanation:
Given temperature values;
200°F , 200°C and 200K
To solve this problem, convert all the given values to the same unit.
Let us choose kelvin as our standard here;
°F → °C → K
200°F;
(°F − 32) × [tex]\frac{5}{9}[/tex] = °C
Insert the parameters;
(200 - 32) x [tex]\frac{5}{9}[/tex] = 93.3°C
So;
°K = 273 + °C = 273 + 93.3 = 366.3K
For 200°C;
°K = 273 + °C = 273 + 200 = 473K
The highest temperature is 200°C
When a pot of water is boiling on the stove it has increased....?
1) Potential Energy
2) Elastic Energy
3) Thermal Energy
4) Kinetic Energy
Answer:
The correct answer would be "3) Thermal Energy"
Explanation:
The thermal energy comes from heat and goes back out as condensation.
-Annie
A storm is
a. “dome” of water that sweeps across the coast where a hurricane lands.
_ b. Huge body of air that has similar temperature, humidity, and air pressure at any given height.
c. Boundary where air masses meet and cold air rises above warm air.
d. Violent disturbance in the atmosphere
BRAINLIEST BRAINLIEST BRAINLIEST
Answer:
c. Boundary where air masses meet and cold air rises above warm air.
Explanation:
DON'T WORRY, THERE'S MORE
I JUST CAN'T FIT IT ALL INTO ONE QUESTION-
Answer all 5 questions, please
What is the difference between a meteor and a meteorite?
Answer:
meteorites are inside Earth's atmosphere on the ground
meteors are outside Earth's atmosphere
Explanation:
When meteoroids enter Earth's atmosphere (or that of another planet, like Mars) at high speed and burn up, the fireballs or “shooting stars” are called meteors. When a meteoroid survives a trip through the atmosphere and hits the ground, it's called a meteorite.
why does gold sink and wood float when they have similar volumes?
gold is more dense than wood? hope its right!
Answer:gold is more dense than wood wood has like air bubbles in it which makes it float and gold is solid with no bubbles
Explanation:
Describe the direction in which each object will accelerate. If the object won’t accelerate, write “no acceleration.” Explain what might be happening to each object in terms of its overall motion.
Answer:
If the object won't accelerate, write “no acceleration.” Explain what might be happening to each object in terms of its overall motion.
Explanation:
Calculate the ΔHrxn for the following
2NOCl(g)→N2(g)+O2(g)+Cl2(g)
Given:
12N2(g)+12O2(g)→NO(g)
ΔH = 89.32
NO(g)+12Cl2→NOCl(g)
ΔH = -30.39
Answer:
2 NO (g) → N2 (g) + O2 (g)
2 NOCl (g) → 2 NO (g) + Cl2 (g)
____________________________
2NOCl (g) ⟶ N2 (g) + O2 (g) + Cl2 (g)
ΔH = [90.3 kJ x 2 x -1] + [-38.6 kJ x -1 x 2] = -103.4 kJ
The ΔH for the reaction is -103.4 kJ
How might a biologist use a distance-time graph or a speed-time time graph?
Answer:
he line on a distance-time graph shows how an object's position changes during each time interval. From this, you can figure out an object's speed
Explanation:
Can somebody help me with this question if you know the answer but if u don’t then ok
Answer: holaa , no lose solo nesesito puntos
Explanation:
perdon
The enthalpy of reaction is −2202.0 kJ/mol. How much energy (in joules) will be released if 65.98 grams of propane is burned. (Molar mass of propane = 44.11 g/mol). Record your answer in scientific notation using 3 significant figures.
The combustion of propane is given by the following reaction.
C3H8+3O2→3CO2+4H2O
Answer:very old tftp
Explanation:
Yo can someone help me out
Answer: A
Explanation: liquids and basses are less dense than a solid
Answer:
First off welcome to brainly
the answer is C
Explanation:
If you put water in a glass it takes the shape, right? It doesnt just sit on top refusing to go in. Its the same with gas. If you can manage to capture gas it will form to the glass instead of staying in the same state.
Hope I helped, have a good one :)
PLEASE HELPP
Will mark brainliest
Answer:
B
Explanation:
Answer all 5 questions, please
What replaces words in a chemical equation?
When discussing the motion of waves, how is a medium defined?
A. a substance that creates a wave
B. a substance that damages a wave
C. a substance that a wave moves through
D. a substance that blocks a wave’s movement
Answer:
c
Explanation:
Please help! ill give you 90 points!
1) A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density?
2) Mercury metal is poured into a graduated cylinder that holds exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury.
4) A rectangular block of copper metal weighs 1896 g. The dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm. From this data, what is the density of copper?
6) Calculate the density of sulfuric acid if 35.4 mL of the acid weighs 65.14 g.
8) A block of lead has dimensions of 4.50 cm by 5.20 cm by 6.00 cm. The block weighs 1587 g. From this information, calculate the density of lead.
Answer:
1.d = 2.70 g/mL
2.d = 13.6 g/mL
4.d = 1896 g / 212.52 cm3 = 8.9 g/cm3
Explanation:If this helped subscribe to Amiredagoat Yt
Describe the direction in which each object will accelerate. If the object won’t accelerate, write “no acceleration.” Explain what might be happening to each object in terms of its overall motion.
Answer: no acceleration.
Explanation: More resistance then downward force
What is the length of a "Jupiter day" in terms of Earth hours or days?
around 15 Earth hours
around 10 Earth hours
around 10 Earth days
around 15 Earth days
Answer:
Around 10 Earth hours
Explanation:
there is no explanation..