Answer:
Sorry pal! Didn't understand your language.
:(
Explanation:
NO LINKS PLS!!!
AND I WILL MARK THE BRAINEST ANSWER
Answer:
(H2O)n
raduim hydroxide
hBr
carbonic acid
Explanation:
HELP PLEASE I HAVE A TEST TODAY AND I DON'T UNDERSTAND ANY OF THIS...
265 kilojoules of energy are added to 150g of ice at 0 degrees C how many grams of water would boil away
Answer:
About 67 grams or 67.39 grams
Explanation:
First you would have to remember a few things:
enthalpy to melt ice is called enthalpy of fusion. this value is 6.02kJ/mol
of ice
it takes 4.18 joules to raise 1 gram of liquid water 1 degree C
water boils at 100 degrees C and water melts above 0 degrees C
1 kilojoules is 1000 joules
water's enthalpy of vaporization (steam) is 40.68 kJ/mol
a mole of water is 18.02 grams
we also have to assume the ice is at 0 degrees C
Step 1
Now start with your ice. The enthalpy of fusion for ice is calculated with this formula:
q = n x ΔH q= energy, n = moles of water, ΔH=enthalpy of fusion
Calculate how many moles of ice you have:
150g x (1 mol / 18.02 g) = 8.32 moles
Put that into the equation:
q = 8.32 mol x 6.02 = 50.09 kJ of energy to melt 150g of ice
Step 2
To raise 1 gram of water to the boiling point, it would take 4.18 joules times 100 (degrees C) or 418 joules.
So if it takes 418 joules for just 1 gram of water, it would take 150 times that amount to raise 150g to 100 degrees C. 418 x 150 = 62,700 joules or 62.7 kilojoules.
So far you have already used 50.09 kJ to melt the ice and another 62.7 kJ to bring the water to boiling. That's a total of 112.79 kJ.
Step 3
The final step is to see how much energy is left to vaporize the water.
Subtract the energy you used so far from what you were told you have.
265 kJ - 112.79 kJ = 152.21 kJ
Again q = mol x ΔH (vaporization)
You know you only have 152.21 kJ left so find out how many moles that will vaporize.
152.21 kJ = mol x 40.68 or mol = 152.21 / 40.68 = 3.74 moles
This tells you that you have vaporized 3.74 moles with the energy you have left.
Convert that back to grams.
3.74 mol x ( 18.02 g / 1 mol ) = 67.39 grams
Viết các phương trình phản ứng dưới dạng phân tửvà ion thu gọn trong các trường hợp sau đây:a)CaCl2+ K2CO3b)Zn(OH)2+ KOH
how many atoms of neon are present in 1.30 moles of neon?
Answer:
7.83 x 10^23 atoms
Explanation:
If you weigh 60 pounds on Earth, your weight is _______on the moon (the moon has 1/6 the gravity of Earth).
Answer:
10 pounds
Explanation:
If the moon has 1/6 the gravity of earth, divide your weight on earth by 6 to find your weight on the moon
60 / 6 = 10 pounds
Please I will mark brainliest !!! I need both answered
bp’s efforts to close the blowout preventer and install a containment dome following an explosion on the deepwater horizon drilling rig is an example of ________ change.
The British Petroleum (bp's) effort to close the blowout preventer and install a containment dome following an explosion on the deepwater horizon drilling rig is an example of regulatory policy change.
The deepwater horizon drilling rig is a semi-submersible, transportable, floating, flexibly oriented drilling rig that could work in sea depths of up to 10,000 feet which is approximately 3,000 meters.
During the explosion that occurred in April 2010, British Petroleum made several efforts to contain the damages made and to prevent further outbreaks of disasters.
Part of the changes was shifting from a blowout preventer that has a specialized valve to seal, manage, and monitor oil and gas wells in order to prevent blowouts to a containment dome (a crucial component of a system meant to control an oil well's underwater blowout).
Therefore, we can conclude that the British Petroleum (bp's) effort to close the blowout preventer and install a containment dome following an explosion on the deepwater horizon drilling rig is an example of regulatory policy change.
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A student wants to calculate the heat gained of 100 grams of water in order to
calculate the specific heat of a metal in the following problem. The water is
heated from 25C to 50C when the metal is added. The specific heat of water is
4.18 J/gºC. Use Q=m xCxT*
The quantity of heat gained to raise the temperature from 25.0°C to 50.0°C is 10,450 Joules.
Given the following data:
Mass of water = 100 gramsInitial temperature = 25.0°CFinal temperature of water = 50.0°CSpecific heat capacity of water = 4.18 J/g°CTo find the quantity of heat gained:
Mathematically, heat capacity or quantity of heat is given by the formula;
[tex]Q = mc\theta[/tex]
Where:
Q represents the heat capacity or quantity of heat.m represents the mass of an object.c represents the specific heat capacity.∅ represents the change in temperature.Substituting the values into the formula, we have:
[tex]Q = 100(4.18)(50 - 25)\\\\Q = 418(25)[/tex]
Quantity of heat = 10,450 Joules.
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if you answer this question right you get 100 points. What is my favorite color it is a 4 letter word and it ends with e
° °
∵ω∵
Answer:
Blue!!
I think it is blue!
is it blue cuz i think its blue
What are the factors affecting chemical reaction??? 4 points.
Answer:
Surface areaTemperature Concentration Amount of catalyst usedPleaseee helppp!! Pleaseee
Answer:
10CO²+4H²O
Explanation:
that Brainliest me pls
Balance equations practice
Answer:
1 - B) 2 - B) 3 - A)
Explanation:
1. C3H8 + 5O2 → 3CO2 + xH2O.. Find 'X'.
A) 3
B) 4
C) 5
D) 6
2. 4Al + 3O2 → xAl2O3. Find 'X'
A) 3
B) 2
C) 4
D) 5
3. FeCl3 + 3NaOH → Fe(OH)3 + xNACl. Find 'x'
A)3
B) 4
C)5
D)6
More in Next Question...
Which layer or layers of Earth provide the heat and energy that fuels convection?
The layer of Earth which provide transfer from the white core to the lithosphere that fuels convection is the mantle.
What is the Mantle layer?A mantle can be described as a layer inside a planetary body bounded above a crust and below a core. Mantles are composed of rock or ice and are usually the largest massive layer of the planetary body.
The mantle layer of the earth is a layer of silicate rock between the crust and the outer core. The mass of the mantle of 4.01 × 10²⁴ kg which is 67% of the mass of the Earth. It's a thickness of 2,900 kilometers making up about 84% of Earth's volume.
The mantle layer is predominantly solid, but it behaves as a viscous fluid. At mid-ocean ridges, partial melting of the mantle produces oceanic crust, and at subduction zones, partial melting of the mantle produces continental crust.
The temperatures range of the mantle from 200 °C at the upper boundary with the crust to 4,000 °C at the core-mantle boundary. The convection of the mantle is a chaotic process, the mantle transfers heat that fuels convection.
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Deduce the total rate change of momentum of a cylinderical shaped object
Rotational versus translational kinetic energy; Total kinetic energy; Acceleration of a rolling object. Example scenarios. Rolling cylinders.
Which of the following statements is correct regarding the speed and velocity of an object? A. An object’s speed is determined by the distance the object traveled and how long it took the object to travel that distance. B. An object’s velocity is determined by the distance the object traveled, how long it took the object to travel that distance and what acceleration the object traveled. C. An object’s velocity is determined by the distance the object traveled and how long it took the object to travel that distance. D. An object’s speed is determined by the distance the object traveled, how long it took the object to travel that distance and what direction the object traveled.
Answer:
Explanation:
D
An object’s speed is determined by the distance the object traveled, how long it took the object to travel that distance, and what direction the object traveled. This statement is correct regarding the speed and velocity of an object.
What is velocity ?The directional speed of an item in motion, as measured by a specific unit of time and viewed from a certain point of reference, is what is referred to as velocity.
Velocity is the pace and direction of an item's movement, whereas speed is the time rate at which an object is travelling along a route.
Constant acceleration and constant velocity are both forms of motion, as you have already read. Because acceleration is the rate at which velocity changes, constant velocity and constant acceleration go hand in hand.
Thus, option D is correct.
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how many protons would the element with the atomic number 10 contain
Answer:
10
Explanation:
Atomic number = No. of protons
Therefore, the number of protons of an element with an atomic number of 10, is also 10.
yall help, i missed like a week
some of them are wrong, I need all of 1 and 2
Answer:
a. Azane
b. sulphur hexachloride
c.carbon tetrachloride
d. Carbon disulfide
e.Umbelliferone
f.Disilicon hexabromide
g. Dinitrogen trifluoride
h.
Three fundamental laws of chemical combination
Answer:
the law of multiple proportions, law of definite proportions, and law of conservation of mass.
Explanation:
(Hope this helps can I pls have brainlist (crown)☺️)
If a laser operating at a wavelength of 488 nm and a power of 123.0 mW is turned on for 18.73 minutes, how many photons has it emitted?
Answer:
3.39e+20
Explanation:
Which grouping shows a decrease in Intermolecular
Forces of Attraction?
A) gas, liquid, solid B) liquid, solid, gas
C) solid, liquid, gas D) solid, gas, liquid
Answer:
C) solid, liquid, gas
Explanation:
Which grouping shows a decrease in Intermolecular
Forces of Attraction?
A) gas, liquid, solid B) liquid, solid, gas
C) solid, liquid, gas D) solid, gas, liquid
the further the particles are from each other, the less the intermolecular attraction they are farthest in a gas, then a liquid, and closest in a solid
Between Si, P, Ge, and Se which element has the largest covalent radius?
Phản ứng tương tác của ancol tạo thành este được gọi là
when did democritus contribute to the atomic theory
Answer:
Around 400 B.C.E., the Greek philosopher Democritus introduced the idea of the atom as the basic building block matter.
Explanation:
Hope this helps.
Someone help me with this I will make you brain
Each of these Ionic Compounds are named INCORRECTLY. 1. Find and describe the mistake 2. Correctly name the compound. CaCl2 - Calcium Chlorine CuS - Copper Sulfide Li3P - Trilithium Phosphide CuBr - Copper(II) Bromide NaOH - Sodium Hydrogen Oxide
Explanation:
The nomenclature of ionic compounds is given by:
1. Positive is written first. And if the metal atom has various oxidation states then its oxidation state is to be mentioned in brackets with help of roman numbers
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
1.) : Calcium chloride (Correct)
In the given compound, calcium has oxidation state of +2 and chlorine has oxidation state of -1.The name is correct.
2.) : Copper (II) oxide (Incorrect)
In the given compound,copper has the oxidation state of +1 and oxygen has oxidation state of -2.So ,the correct name will be Copper (I) oxide.
3.) : Lead (II) sulfide (Incorrect)
In the given compound, lead has the oxidation state of +4 and sulfur has oxidation state of -2. So ,the correct name will be Lead (IV) sulfide.
why does a higher concentration make a reaction faster?
Answer:
Explanation: because more is always better
Faster Rate: Higher temperature, Lower Rate: Higher temperature
Question 9 (2 points)
(02.04 MC)
John has three cups of sugar particles. Cup 1 has large sugar particles, Cup 2 has medium-sized particles, and Cup 3 has small sugar particles. If
John pours each cup in water, which cup of sugar particles will dissolve the fastest? (2 points)
оа
Cup 1 will dissolve the fastest.
Ob
Cup 2 will dissolve the fastest.
Oc
Cup 3 will dissolve the fastest.
Od
They will dissolve at the same rate.
Question 10 (2 points)
(02.04 MC)
Gina predicts that one really large cube of sugar will dissolve faster than the same amount of sugar in several medium-sized cubes. She thinks
rube. It has more surface area and will dissolve faster than the several medium-sized cubes. What is the
Answer:
cup c will dissolve the fastest
Explanation:
Because the particle size is smaller, the water can dissolve them quicker as the smaller the particle, the more surface are for the water to dissolve.
why the core is metallic and the lower mantle is not.
Answer:
due to the overlaying layers of strata (layers of earth) an high pressure is created at the core. due to this it behaves like an solid rether than being a liquid... the lower mantle is not solid because in this case the overlaying strata doesn't produce that much pressure on it..
Explanation:
brainliest plz
The reaction of C2H4 +Cl2 is what type of reaction.
Answer:
C2H4(g) + Cl2(g)→C2H4Cl2(g)
This is an example of synthesis reaction, when compounds are joined together.
sodium atom cannot exist freely In nature but argon atom can.give reason
Answer:
argan can exist freely in nature because it has stable configuration whereas sodium atom cannot exist freely nature because do not have stable configuration.
Explanation:
brainiest!!!!!
Because that's the correct answer
