Options:
It can be separated into carbon and oxygen using physical methods.
Carbon and oxygen retain their original identity in it.
Carbon and oxygen are chemically bonded in it.
Explanation:
Sorry the guy asking forgot to put in the options so comment below the correct answer and brainy STOP DISABLING COMMENTS YOUR CAUSING SO MANY INCORRECT THINGS
Can anyone help me with the final answers plzzzzz
plssss help asapp
will give brainliest!!!
Answer:
Mass of MgO = 36.27 g
Mg produced less number of moles of MgO it will act as limiting reactant while oxygen is present is in excess.
Explanation:
Given data:
Number of moles of Mg = 0.9 mol
Number of moles of O₂ = 1.1 mol
Number of moles of MgO = ?
Which reactant is in excess = ?
Which one is limiting reactant = ?
Solution:
Chemical equation:
2Mg + O₂ → 2MgO
now we will compare the moles of MgO with oxygen and magnesium.
Mg : MgO
2 : 2
0.9 : 0.9
O₂ : MgO
1 : 2
1.1 : 2/1×1.1 = 2.2
Mg produced less number of moles of MgO it will act as limiting reactant while oxygen is present is in excess.
Mass of MgO:
Mass = number of moles × molar mass
Mass = 0.9 mol × 40.3 g/mol
Mass = 36.27 g
what type of bond( ionic or covalent) does silver and nobelium form?
What volume of hydrogen gas, when combined with nitrogen gas,
is necessary to produce 16.0 L of ammonia gas (NH3)?
The volume of Hydrogen gas : 24 L
Further explanationGiven
16 L Ammonia(NH₃)
Required
The volume of Hydrogen gas
Solution
Reaction
N₂ + 3H₂ ⇒ 2NH₃
Avogadro's hypothesis:
In the same T,P and V, the gas contains the same number of molecules
So the ratio of gas volume will be equal to the ratio of gas moles
V₁/n₁=V₂/n₂
From the equation, mol ratio of H₂ : NH₃ = 3 : 2, so volume of H₂ :
= 3/2 x volume of NH₃
= 3/2 x 16 L
= 24 L
Your answer
Why is sulfur often removed from fuels before they are burnt? *
1 poi
So the fuel produces less soot when it burns.
To reduce the cost of the fuel.
To reduce acid rain.
Which of these is not produced when a fuel undergoes completo
Answer:
To reduce acid rain.
Explanation:
Sulfur often removed from fuels before they are burnt because when sulfur is burned it get converted into sulfur dioxide and when sulfur dioxide mix with atmosphere, it can cause acid rain which is very harmful.
So, in order to reduce acid rain, sulfur often removed from fuels before they are burnt.
Hence, the correct answer is "To reduce acid rain."
Help! I need to turn this in ASAP.
Answer: Potassium, Carbon and Oxygen, third option.
Explanation: K= Potassium, C= Carbon, O=Oxygen
What is the name ?
Organic Chemsitry
Answer:
The term organic chemistry originally meant the chemistry of compounds obtainable from plants and animals
DESPERATE WILL GIVE BRAINLIST AND THANKS
Which phase of cell division is shown?
prophase
metaphase
anaphase
telophase
anaphase
or if not
telophase
What is a reaction rate?
Answer:
Reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume)
Explanation:
Answer:
A measure of how fast products are made in a reaction.
Explanation:
i just took the test and it gave me this cuz the other person was wrong
Air pressure is caused by: gas particles striking the walls of a container or an object. b. gas particles are taking a test gas particles reaching 0 degrees Kelvin d. Air pressure has nothing to do with gas.
Answer:
D
Explanation:
Which is NOT a form of electromagnetic radiation?
radio waves
sound waves
x-rays
gamma waves
Sound waves is not the form of electromagnetic radiation.
The information regarding electromagnetic radiation is as follows:
It is the type of radiation that involved the radio waves, gamma rays, X-rays, visible light where the fields of electric and magnetic should be changed on the instant basis.Therefore we can conclude that sound waves is not the form of electromagnetic radiation.
Learn more: brainly.com/question/21995826
What are columns on the periodic table called? What is the significance of the columns on the periodic table?
Answer:
The vertical columns of the periodic table are called groups, or families. The significance is elements with similar properties are placed in the same vertical columns. The horizontal rows of the periodic table are called periods. The significance is that properties vary from left to right along the rows.
Explanation:
We just did this in science
Answer:
columns in the periodic table are reffered to as "periods". periods represent elements with the same number of shells i.e all elements in period 1 have 1 shell (k shell) and vice versa.
Oceans cover over 70% of Earth's surface, and precipitation constantly adds freshwater to the oceans. Yet, ocean levels remain relatively constant. Which of the following is the best explanation for why ocean levels remain constant?
A.Ocean water is continually changing from a liquid state into a vapor.
B.
Ocean water is continually seeping underground into the ocean floor.
C.
Humans alter the level of the oceans due to our need for drinking water.
D.
It is difficult to change the ocean levels due to the large size of the oceans.
Answer:
D.
Explanation:
I had looked it up on the quiz site
Answer:
A
Explanation:
i thought b but majorities of water companies dont use ocean water and use waters from rivers,and lakes yk
What numbers balance Pb + H3PO4 —>Н2 + Pb3(Ро4)2
Answer:
3Pb + 2H3PO4 —> 3H2 + Pb3(РO4)2
Explanation:
Pb + H3PO4 —>Н2 + Pb3(РO4)2
In order to balance the equation you must look at the number of elements already in the equation.
We see, on the left side, that:
Pb = 1, H = 3, P = 1, and O = 4
We see, on the right side, that:
Pb = 3, H = 2, P = 2, and O = 8
Our goal is to balance these numbers so that they are equal. This is because of the law of conservation of matter states that "the amount of matter stays the same, even when matter changes form".
We cannot change the subscripts, so we add coefficients.
3Pb + 2H3PO4 —> 3H2 + 1Pb3(РO4)2
Now, on the left side:
Pb = 3, H = 6, P = 2, and O = 8
And, on the right side:
Pb = 3, H = 6, P = 2, and O = 8
So, the balanced equation is: 3Pb + 2H3PO4 —> 3H2 + Pb3(РO4)2
*I hope that this helped you. Have a great day & good luck!
Help, does anyone know this answer?
Answer:
1.53
Explanation:
The acceleration of gravity is 9.8 i believe. To get force divide 15kg by 9.8 and you should get 1.53( rounded to hundredth)
When blood moves around the body, it
A. Circulation
B. Pumping
C. System
D. Circulates
Answer:d
Explanation:
Help please she need evidence!!!!!!???
Answer:
nah
Explanation:
dont wast my points
stars have a larger gravitational force then planets
how many atoms are in 5.5 moles of carbon dioxide
Answer: I think the answer is, 3.312177825e+24 atoms
Explanation: I had a problem similar to this, Hope this helps!
Answer:
So if you have 5 mole, you have: 5 x (6.022 x 10^23) = 3.011 x 10^24 atoms.
Explanation:
Basically the answer is 44.0095 :)) have a great day!!
YOU MUST SHOW ALL STEPS OF THE G.U.E.S.S. METHOD CORRECTLY. NO UNITS=WRONG ANSWER
Q: wave is traveling with a frequency of 2424 Hz and has a wavelength of 0.5 meters. What speed is this wave going?
Answer:
The equation for wave speed can be used to calculate the speed of a wave when both wavelength and wave frequency are known. Consider an ocean wave with a wavelength of 3 meters and a frequency of 1 hertz. The speed of the wave is: Speed = 3 m x 1 wave/s = 3 m/s.
SO... take your meters and hezert and do tha same
Explanation:
Plz mark me as brainlyist
A white solid was left out after a class had tidied up their
experiment. During the experiment, one of the pupils had
removed the label on the white solid. The teacher knew the
solid was a Group 1 metal halide, so they performed a
flame test followed by a silver nitrate test. The flame test
gave a red flame, and the silver nitrate test gave a cream
precipitate. What is the white solid?
Answer:
LiBr
Explanation:
Group 1 metals give a characteristic colour when subjected to flame test. The colour can tell us exactly what the identity of metal being studied.
Now, Lithium metal gives a red flame. Hence the group 1 metal ion is Li^+. Similarly, bromides give a creamy precipitate when reacted with silver nitrate.
This means that the solid substance under study is LiBr.
9) A cactus plant, a snake, and a hawk can be members of the same
A- community
B- kingdom
C- population
D- species
13) gene are part of a
a-cell wall
b-chromsome
c-hormone
D-vitamin
A plane flies from NY to LA at a constant speed of 800 km/hr. How long will it take the plane to fly the 4200 km? 5
As the plane plane flies at a constant speed of 800 km/hr the plane will take 5 hours 25 minutes to fly distance of 4200 km.
What is speed?Speed is defined as the rate of change of distance with time. It has the dimension of distance by time. Thus, the SI unit of speed is given as the combination of the basic unit of distance and the basic unit of Time. Thus, the SI unit of speed is metre per second. In everyday life, kilometre per hour or in countries like US and UK miles per hour are used as the unit of speed.
The SI unit of speed can be derived from the formula of velocity. Basically, velocity is the vector equivalent of speed. Mathematically, velocity is given as the ratio of displacement to the time taken.So, 800 km is traveled in 1 hour so 4200 km will be traveled 4200/800=5.25 which is 5 hours and 25 minutes.
Thus, the plane will take 5 hours 25 minutes to fly distance of 4200 km.
Learn more about speed,here:
https://brainly.com/question/7359669
#SPJ5
Members in band noticed that drums seemed to vibrate and play themselves during practice. Why? A. The music was played at an natural frequency of the drums B .The music was so loud it caused the drums to vibrate Help pls!
Answer:
The music was played at an natural frequency of the drums
Explanation:
The natural frequency of a body is the frequency when we notice that the system oscillates without any driving or damping force. This is also referred to as the normal mode of vibration because all parts of the system move sinusoidally at the same frequency.
So, when music is played at the natural frequency of the drums, the drums tends to vibrate without any driving force. We can now say that the drums are 'playing themselves'.
water is a substance made up of elements hydrogen and oxegyn....How many types of atoms make up a particle of water?
ОА. 4
ОВ. 1
С. 2
D.3
Answer:
C
Explanation:
Just took the test
Plants use energy to survive. They use the Sun's energy to make the food that they need to grow and develop. Which energy sequences BEST describe the transformation that takes place in
plants?
1.Solar>chemical>heat
2.Solar>heat>chemical
3.Heat>nuclear>chemical
4.Heat>light>chemical
Answer:
second one... maybe
hope it helps :-)
Which of the following substances would have the highest dispersion forces? Why?
Ne, FCI, N2H4 SO2, SO3, C20H42, MgO, Si, CsI, Sn, H2O, CCl4
Answer:
Si
Explanation:
Dispersion force or London force is the force of attraction between two atoms or molecules in a substance in solid , liquid and gas . In gas , this force is minimum and in solid this force is maximum . In solid this force is maximum in metals in which this force forms metallic bond .
Among the given substances , Si , Sn , MgO , C₂₀H₄₂ are solid , so dispersion force will be high in them .
Among all as mentioned above , Si will have highest dispersion force . It is due to four covalent bond that bind two atoms of Si in solid silicon . Its three dimensional crystal structure consist of silicon atoms , all bound by four covalent bonds .
How do chemists use systems and order in their work?
Answer:
5 point) Chemists used systems and order because they study the basic unit of all forms of matter, which is the atom . However, there are several different kinds of atoms, called elements . Chemists organize these elements using the periodic table .
Explanation:
Calculate the heat, in joules, needed to warm 225 grams of water from 88.0ºC to its boiling point, 100.0ºC.
Answer:
The heat needed to warm 225 grams of water from 88.0ºC to its boiling point, 100.0ºC, is 11,296.8 J
Explanation:
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
In this way, between heat and temperature there is a direct proportional relationship (Two quantities are directly proportional when there is a constant, so that when one of the quantities increases, the other also increases; and the same happens when either of the two decreases.) . The constant of proportionality dependent on the substance that constitutes the body and its mass, and is the product of the specific heat and the mass of the body. So, the equation that allows to calculate the calorie exchanges:
Q = c * m * ΔT
Where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature
In this case:
c= 4.184 [tex]\frac{J}{g*C}[/tex] m= 225 gΔT= Tfinal - Tinitial= 100 C- 88 C= 12 CReplacing:
Q= 4.184 [tex]\frac{J}{g*C}[/tex] *225 g* 12 C
Solving:
Q= 11,296.8 J
The heat needed to warm 225 grams of water from 88.0ºC to its boiling point, 100.0ºC, is 11,296.8 J
A sample of gas occupies a volume of 22.3 mL . As it expands, it does 131.5 J of work on its surroundings at a constant pressure of 777 Torr . What is the final volume of the gas?
Answer:
1.29L
Explanation:
The equation that represents the change in energy for the expansion of a gas under constant pressure is:
W = PΔV
Where W is work in atmL, P is pressure in atm and ΔV is change in volume in liters
Work in atmL:
131.5J * (1atmL / 101.325J) = 1.298atmL
P in atm:
777 torr * (1atm / 760torr) = 1.022atm
ΔV is:
W / P = 1.298atmL / 1.022atm = 1.27L
As initial volume of the gas is 22.3L = 0.0223L
Final volume = 1.27L + 0.0223L =
1.29L