how many lbs are in 60 oz
Answer:
3 pounds 13 ounces
Explanation:
Math
Answer:
3.75
Explanation:
how does friction affect how tractors move in mud
What element is on period 5 group/family 11
Answer:
47
Ag
Silver
107.87
Explanation:
Suppose you have a mixture of iron filings, sand, and sugar and you want to separate the three. Fill in the materials you expect to see at each step as you perform the actions shown to separate them. The materials you may expect to see are: iron filings, sand, sugar, and sugar water.
Answer:
Explanation:
mixture of iron filings, sand, and sugar
First Step - Iron Fillings
Use a magnet to separate the iron fillings from the mixture. Due to magnetic properties of the iron fillings, the magnets would attract the iron fillings and separate it from the mixture.
Second step - Sand
Place the sand and sugar mixture in water. The sugar would dissolve in water and the sand easily separated by filtration.
Third step - Sugar and Sugar water
Boil the sugar water to remove the water and place in the refrigerator for crystallization of the sugar.
element A it's valance number is 3 and element B it's valance number is 6 make it compound
Answer:
A2B
Explanation:
A = 3
B = 6
exchange valencies
A6B3
A2B
What is a reactant?
A- Solid particles that have been separated from a solution
B- A substance that has the ability to be dissolved by a solvent
C- A mixture in which a solid and a liquid or two liquids are mixed occurs
D- The substance present before a chemical reaction occurs
Answer:
it is D
Explanation:
because it is a substance that participants in a chemical reaction.
What volume (in L) of water vapor will be
produced from the reaction of 4.95 L of ethane
(C2He)?
2C2H6(g) + 702(9) — 4CO2(g) + 6H2O(g)
Answer:
14.85L of water are produced
Explanation:
Based on Avigadro's law, the volume is directly proportional to the moles of a gas.
Based on the equation:
2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(g)
2 moles of ethane produce 6 moles of H₂O.
Using Avogadro's law: 2L of ethane produce 6L of H₂O.
The addition of 4.95L of ethane are:
4.95L ethane * (6L H₂O / 2L C₂H₆) =
14.85L of water are producedHow many moles of H2 gas are in 15 liters?
Which electromagnetic wave has the shortest
wavelength? Describe the energy level and
frequency of this wave.
Answer:
The electromagnetic spectrum
Explanation:
ranges from gamma (γ) radiation, which has the shortest wavelength, highest frequency, and greatest energy
An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom of chromium?
0
24
28
52
Answer:
24
Explanation:
In an uncharged atom, the number of protons is always equal to the number of electrons. For example, carbon atoms include six protons and six electrons, so carbon's atomic number is 6.
Similarly, since an atom of chromium contains 24 protons, it also contains the same amount of electrons, which is 24.
Answer:
24 is your answer
Explanation:
Summarize how you would go about calculating the grams of product given the grams of reactant you start with.
Does anyone know what the molar mass is
Answer:
the formula is M = m/n
Explanation:
M = m/n is the molar mass equals the mass of the substance divided by the number of moles of a substance
Answer:
100.93 g/mol
Explantion:
1.a)concentrated sulphuric acid reacts with ethanol to produce ethene
(i) state the conditions for the reaction
.......................................................................
write the equation of the leads to formation of ethene In (a) (i) above.
.....................................................................................
state the property of sulphuric acid shown in reaction (a)(ii)
...................................................................................
Answer: a) Temperature of [tex]170^0C[/tex]
b) [tex]C_2H_5OH\stackrel{conc H_2SO_4, 170^0C}\rightarrow C_2H_4+H_2O[/tex]
c) dehydrating agent
Explanation:
Ethanol is heated with an excess of concentrated sulfuric acid at a temperature of 170°C to produce ethene.
The balanced chemical reaction is:
[tex]C_2H_5OH\stackrel{conc H_2SO_4, 170^0C}\rightarrow C_2H_4+H_2O[/tex]
Here concentrated sulfuric acid removes a water molecule from ethanol and thus acts as a dehydrating agent.
How many grams is 40.48 moles of cobalt?
Answer:
2385.49 grams of cobalt.
Explanation:
1. Convert 40.48 moles of Co (cobalt) into grams (mass):
The molar mass of cobalt is 58.933195 g/mol.
[tex]40.48 mol Co = \frac{58.93 g/mol}{1 mol Co} = 2385.49 g[/tex]
Please can you help me from 1 to 6
Answer:
um
Explanation:
help you? you mean do it for you? nah man you can just use the calculator ;)
Answer the question using the equation: HCl(aq)+H2O(l)→H+(aq)+Cl-(aq)+H2O(l)→H3O+(aq)+Cl-(aq) Which product is a Lewis base?
Answer:
Cl-
Explanation:
The equation of the reaction is;
H+(aq)+Cl-(aq)+H2O(l)→H3O+(aq)+Cl-(aq)
Lewis base refers to substances that can donate a lone pair of electrons(e.g OH^-, Cl^- etc) or a pair of nonbonding electrons.(eg NH3, H20 etc). A Lewis base is therefore an electron-pair donor. They are easily recognized because they often have lone pairs or are negatively charged species.
If we look at the products, Cl- is a Lewis base because it is a lone pair donor. We see this more clearly because the specie is negatively charged.
Answer:
Cl
Explanation:
What happens when the pressure of a gas is decreased?
A. The number of molecules increases.
B. The diffusion rate increases.
C. The temperature increases.
D. The volume increases.
Answer:
The combined gas law states that the pressure of a gas is inversely related to the volume and directly related to the temperature. If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase.
Explanation:
Answer:
D. The volume increases.
Explanation:
100%
An increase in the volume of a substance because of an increase in temperature is called
Answer:
Its called contraction.
Explanation:
I gave brainlest:: answer this .....
"Show a general equation for polymerisation"
Answer:
Polymerisation is the chemical process of monomers joining together to form polymers, often it takes many thousands of monomers to make a single polymer.
Explanation:
Select the correct answer.
Which substance is a source of hydrocarbons?
A.
natural gas
B.
protein
C.
silk
D.
starch
E.
water
Answer:
A. Natural Gas is a substance that is a source of hydrocarbons.
Explanation:
Answer:
option A . hope it helps , thanks
why is productivity greatest near the ocean's surface?
Answer:
Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there. ... Upwelling brings nutrients to the surface.
Energy used for metabolism comes primarily from which biomolecules a) Polysaccharides only b) Lipid only c) Lipid and Carbohydrates D) amino acids
Answer:
C) Lipids and Carbohydrates
Explanation:
Lipids, or fats, are stored long-term for energy when an organism cannot find carbohydrates (specifically glucose), which are used as short-term energy.
Construct an ICE table to calculate the equilibrium concentration of S2− in a solution containing 0.04 mol of Fe(NO3)2. The Ksp of FeS is 8.0 x 10−19. Complete the table by typing in the correct answer, represented by the orange letters in the ICE table. (When typing a number that is between 0 and 1, insert a 0 before the decimal, and type values to two decimal places.)
Answer: a: 0.04
b: 0
c: x
d: x
e: x
f: 0.04
Explanation:
A surplus (having “extra”) or deficit (having “fewer”) of electrons?
Answer:
Charge
Explanation:
A surplus (having "extra") or deficit (having "fewer") of electrons possessed by an object. A charge can cause attractive or repulsive forces which can be observed in some cases (e.g. pith balls, bits of plastic).
What would be the theoretical yield in grams of carbon dioxide in the reaction shown below if 30 g of C6H12O6 were reacted with an excess of oxygen? C6H12O6 + O2 -> CO2 + H2O
Answer: Thus 44 g of [tex]CO_2[/tex] will be produced if 30 g of [tex]C_6H_{12}O_6[/tex] were reacted with an excess of oxygen
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} C_6H_{12}O_6 =\frac{30g}{180g/mol}=0.17moles[/tex]
The balanced chemical equation is:
[tex]C_6H_{12}O_6 +6O_2(g)\rightarrow 6CO_2+6H_2O(g)[/tex]
As [tex]C_6H_{12}O_6[/tex] is the limiting reagent as it limits the formation of product and [tex]O_2[/tex] is the excess reagent.
According to stoichiometry :
1 mole of [tex]C_6H_{12}O_6[/tex] produce = 6 moles of [tex]CO_2[/tex]
Thus 0.17 moles of [tex]C_6H_{12}O_6[/tex] will produce=[tex]\frac{6}{1}\times 0.17=1.0mole[/tex] of [tex]CO_2[/tex]
Mass of [tex]CO_2=moles\times {\text {Molar mass}}=1.0moles\times 44g/mol=44g[/tex]
Thus 44 g of [tex]CO_2[/tex] will be produced if 30 g of [tex]C_6H_{12}O_6[/tex] were reacted with an excess of oxygen.
Advertisements for tobacco and alcohol products work because they "tell the truth."
True
False
How does an increase in temperature affect the equilibrium concentration of the underlined substance and K for each of the following reactions?
(c) SO2(g) S(s) + O2(g) DH° = 297 kJ
Explanation:
Due to the positive value of the change in temperature, this is an endothermic reaction.
Since the forward reaction is endothermic, increasing the temperature increases the equilibrium constant (k).
In an equilibrium system, the position of the equilibrium will move in a way to annul the change made to the system. An increase in temperature for an endothermic reaction would favour the reaction, leading to increase in amount of products and decrease in amount of reactants.
Atomic Radius________across (left to right) a period and______down a group.
Answer: Decreases across the period and increases down the group
2) Which liberates the most energy?
A) F(g) + e ➡️ F-(g)
B) N(g) +e- ➡️ N-(g)
C) O(g) +e ➡️ O-(g)
D) C(g) +e ➡️ C-(g)
Answer: [tex]F(g)+e^-\rightarrow F^-(g)[/tex]
Explanation:
Electron gain enthalpy is defined as energy released on addition of electron to an isolated gaseous atom.
The amount of energy released will be maximum when the tendency to attract electrons is maximum. As flourine has atomic number of 9 and has electronic configuration of 2,7. It can readily gain 1 electron to attain stable noble gas configuration and hence liberates maximum energy.
[tex]F(g)+e^-\rightarrow F^-(g)[/tex]