Answer:
Compost is a mixture of organic residues (manure, animal carcasses, straw, etc.) that have been piled, mixed and moistened to undergo thermophilic (high heat 113 to 160 degrees Fahrenheit) decomposition (SSSA, 1997).
Explanation:
Thermal energy is the energy associated with
O electric fields.
O being stored in chemical bonds.
O the pull of gravity.
O temperature.
Answer:
I think temperature. sorry if the answer is wrong
Thermal energy is the energy associated with temperature. Therefore, the correct option is option D.
What is thermal energy?
By virtue of its temperature, a system in a condition of thermodynamic equilibrium has thermal energy, or internal energy. Unlike the energy of systems which are not in a state of thermodynamic equilibrium, thermal energy cannot be transformed into meaningful work as quickly.
For instance, the energy contained in a flowing fluid or perhaps a moving solid can be used to create mechanical work in a windmill or even a waterwheel, yet a single fluid or solid with the same energy in a thermal equilibrium state cannot produce mechanical work unless it's combined with some other substance at such a different temperature. Thermal energy is the energy associated with temperature.
Therefore, the correct option is option D.
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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
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 =
1.29LHelp, 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)
a.
Zn (s) + HCl (aq)
→ ZnCl2 (aq)
+ H2(g)
b. 2H20 (1)→ H2(g) + O2(g)
c. ALC3 (s) + H20 (1) → CH4 (g) + Al(OH)3 (s)
d. CH4 (g) + 2O2(g) → CO2 (g) + 2H20 (3)
Which chemical equation supports the law of conservation of mass
Answer:
CH₄ + 20₂ → CO₂ + 2H₂O
Explanation:
The reaction equation that supports the law of conservation of mass is the one in which the number of atoms on both sides of the expression are found to be the same.
The law of conservation of mass states that "in a chemical reaction, matter is neither created nor destroyed".
The reaction expressions are given as:
Zn + HCl → ZnCl₂ + H₂
2H₂O → H₂ + O₂
AlCl₃ + H₂O → CH₄ + Al(OH)₃
CH₄ + 20₂ → CO₂ + 2H₂O
In the highlighted reaction above:
Number of atoms
Reactants Products
C 1 1
H 4 4
O 4 4
12.
Carboxylic acids react with alkalis to produce salt and water.
+
+
CH, COOH
NaOH
Ethanoic acid Sodium hydroxide
NaCH COO
Sodium ethanoate
но
Water
a. What mass of water would be produced if 1.5 g of ethanoic acid was reacted completely
with sodium hydroxide?
Show your working clearly.
3
Mass of water : 0.45 g
Further explanationGiven
1.5 g ethanoic acid
Required
Mass of water
Solution
Reaction
CH₃COOH + NaOH ⇒H₂O + CH₃COONa
mol CH₃COOH(MW=60 g/mol) :
= mass : MW
= 1.5 : 60
= 0.025
mol H₂O from the equation :
= 0.025(mol ratio CH₃COOH : H₂O= 1 : 1)
Mass of water :
= mol x MW water
= 0.025 x 18 g/mol
= 0.45 g
Help!! This is due today and I have no clue what these are ://
(will give brainliest to the most helpful answer :D )
Number of atoms in 125 g of C2H22011
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!
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 :-)
As a child (with a mass of 35.0 kg) you take your 5.0-kg sled to Orchard Downs. If you are sliding down the hill on your sled, with a kinetic energy of 260 J, how fast are you moving?
Velocity = 3.61 m/s
Further explanationGiven
mass of child = 35 kg
mass of sled = 5 kg
Kinetic energy = 260 J
Required
velocity
Solution
Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:
KE = 1/2.mv²
mass of object :
= mass child + mass sled
= 35 kg + 5 kg
= 40 kg
Input the value :
v²=KE : 1/2.m
v²= 260 : 1/2.40 kg
v²=13
v=3.61 m/s
Why should batteries be stored in the fridge when not being used?
Answer:
it helps them retain their charge longer
Explanation:
:)
When a nitrogen atom becomes an ion, the atom becomes a... A. Negative ion with a radius smaller than the radius of the atom B. Negative ion with a radius larger than the radius of the atom C. Positive ion with a radius smaller than the radius of the atom D. Positive ion with a radius larger than the radius of the atom
Answer:
B. Negative ion with a radius larger than the radius of the atom
Explanation:
When a negative ion is formed, electrons are added to the atom. As electrons are added to the atom, the size of the electron cloud increases accordingly.
As a result of this, a negative ion is always larger than its corresponding atom. Hence, nitrogen ion must be larger than the nitrogen atom based on the facts stated above.
Can someone please try and help me with this? I'll give brainliest if I can
Answer:
boom Corvette Corvette pop in the popular vet like that like that why you walk like that why you talk like that like I said boom boom boom I'm in the cold Mira, she needs to be back I remember seeing everyone Nee u i
What mass of fluorine is needed to completely react with 3.6 grams of water?
= 18.02 g/mol) im sure its that
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
The sun provides heat
Using stoichiometry a student determines that 33.3 grams of PbCrO4 will be produced during a reaction. After performing the experiment, 27.2 grams of PbCrO4 are collected. What is the percent yield of the reaction?
Answer:
81.7% is percent yield of the reaction
Explanation:
Percent yield of a reaction is defined as 100 times the ratio between actual yield and theoretical yield of the reaction. The theoretical yield is obtained using stoichiometry.
In the problem, theoretical yield was 33.3g of PbCrO₄ and the yield obtained was of 27.2g of PbCrO₄. That means percent yield is:
27.2g / 33.3g * 100
= 81.7% is percent yield of the reaction
What happens in nuclear fission reactions?
Answer:
in nuclear fission, an unstable atom splits into 2 or more smaller pieces that are more stable and releases energy in the process. the fission process also releases extra neutrons which can split additional atoms, resulting in a chain reaction that releases a lot of energy
Answer:
A nucleus is divided into more than one nucleus
Explanation:
how do the electrons not fall into the nucleus? simple explanation please :)
Answer:
because they have fixed orbit according to its power QM probhits electron to fall into nucleus
What is the formula for compound formed by Iron ( II ) ions and chromate ions?
Answer:
The formula of the compound formed by Iron (ii) ions and chromate ions is FeCrO₄
Explanation:
Iron (ii) ions, Fe²⁺ have a positive charge of +2. Chromate ions, CrO₄²⁻, on the other hand have a positive charge of -2. When iron (ii) ions and chromate ions combine two form a compound, each ion will contribute a mole of ion towards the formation of the compound. This is in line with the idea that a compound carries no charge. The positive charge (+2) of the iron (ii) ions are balanced by the negative charge of the chromate ions as shown mathematically as follows;
+2 + (-2) = 0; i.e. Fe²⁺ + CrO₄²⁻ = FeCrO₄
Therefore, the formula of the compound formed by Iron (ii) ions and chromate ions is FeCrO₄
The formula formed by the compound by Iron ii ions and chromate ions will be FeCrO₄
What will be the formula for the compound of Iron ii and chromate ions?Iron (ii) ions [tex]\rm Fe^{2+}[/tex] have a positive charge of +2. Chromate ions, [tex]\rm CrO_3^{2-}[/tex] on the other hand, have a positive charge of -2.
When iron (ii) ions and chromate ions combine to form a compound, each ion will contribute a mole of ion towards the formation of the compound.
This is in line with the idea that a compound carries no charge. The positive charge of the iron (ii) ions 2+ are balanced by the negative charge of the chromate ions -2 as shown mathematically as follows;
[tex]\rm +2+(-2)=0[/tex]
[tex]\rm Fe^{2+} +CcrO_4^{2-}=FeCrO_4[/tex]
Thus the formula of the compound formed by Iron (ii) ions and chromate ions is FeCrO₄
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What’s in the gaps...
Answer:
Faster
number
reactants
increases
Explanation:
The rate of reaction refers to how fast or slow a reaction occurs. The rate of reaction is dependent on factors such as surface area, concentration, temperature, nature of reactants, catalyst etc.
The concentration refers to the amount of reactants present. When the acid is made more concentrated, its amount is increased. This increases the number of collisions between the acid particles and the marble chips ultimately leading to increase in the rate of reaction according to Arrhenius theory.
Fluorine gas reacts with zinc (II) chloride →
Answer:
Zinc Chloride + Difluorine -----> Zinc Fluoride + Dichlorine
Explanation:
ZnCl2 + F2 → ZnF2 + Cl2
How does the electrolysis of water produce hydrogen gas?
o
A. Hydrogen cations give electrons to the anode through reduction reactions.
B. Hydrogen cations give electrons to the anode through oxidation reactions.
C. Electrons from the cathode combine with hydrogen cations through reduction reactions.
о o
D. Electrons from the cathode combine with hydrogen cations through oxidation reactions.
г
Answer: C. Electrons from the cathode combine with hydrogen cations through reduction reactions.
Explanation: 100% on edg 2021 quiz
7. Which of the following is most likely to produce an ionic bond? *
Al and F
P and H
C and N
Si and Br
Answer:
AL and F
Explanation:
ionic bonds occur through a metal and a non metal
Give the ideas that you have at this time about how energy relates to differences between solids, liquids and gases.
Answer:
The energy content of substances is related to the physical state in which the substance exists. Molecules of gases are always in motion as they possess very high kinetic energy, hence, they exist as gases. Liquid molecules are less energetic than gas molecules, hence they have less flow than gases. Solid molecules on the other are fixed at a place because they possess very low kinetic energy and can only vibrate about their fixed positions.
Explanation:
The three states in which matter exist are solid, liquid and gas.
Solids are made of molecules that are closely packed together and held together by strong intermolecular forces. The particles in a solid possess very low kinetic energy and are not free to move about but can only vibrate and rotate about their fixed positions.
Liquids particles are able to move about as they possess enough kinetic energy to limit or reduce the strength of the intermolecular forces binding them together. Thus, liquids can flow.
The particles in a gas are relatively far apart and possess kinetic energy more than the particles of a liquid or solid. The intermolecular forces binding particles of gas together are weak due to the very high kinetic energy of yhe gas particlest
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!!
1.what is the mass of an atom.
2.what is the difference between an ion and atom.
Answer: Atoms are single neutral particles, and an ion is a positively or negatively charged particle.
Explanation:
1.
Which description accurately compares mass and weight?
A Mass indicates the density of an object, while weight indicates its volume.
B. O Mass indicates the volume of an object, while weight indicates the pull of gravity on an object.
Mass indicates how much matter an object has, while weight indicates the pull of gravity on a
Mass indicates the pull of gravity on an object, while weight indicates the amount of matter ar
D
Answer:
B
Explanation:
