Answer:
Los sólidos tienen una forma y un volumen definidos. Los líquidos tienen ... Para describir las fases sólida, líquida y gaseosa. El agua puede tomar muchas formas. ... Un líquido familiar es el mercurio metálico.
The raw materials used in making nylon?
[Please answer this]
Answer:
petroleum,natural gas,lime stone, coal,water,acetylene etc.
Answer:
petroleum,natural gas,lime stone,coal
water,acetylene
which of the following would not form a covalent bond
Hydrogen and oxygen
Gallium and Iodine
Nitrogen and Oxygen
Carbon and Chlorine
Answer:
Gallium
Iodine
Chlorine
what are the possible values of ml for l=2
Answer:
-2, -1, 0, 1, 2
Explanation:
There are four types of quantum numbers;
1) Principal quantum number (n)
2) Azimuthal quantum number (l)
3) magnetic quantum number (ml)
4) Spin quantum number (s)
The azimuthal quantum number (l) describes the orbital angular momentum and shape of an orbital while the magnetic quantum number shows the projections of the orbital angular momentum along a specified axis. This implies that the magnetic quantum number shows the orientation of various orbitals along the Cartesian axes. The values of the magnetic quantum number ranges from -l to + l
For l= 2, the possible values of the magnetic quantum number are; -2, -1, 0, 1, 2
you can test carbon dioxide gas with
Answer:
you can test carbon dioxide gas with calcium hydroxide
hope this is what you're looking for
stay safe and have a nice day
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A trophic level is a number that tells you the position an organism occupies in a food chain or food pyramid.
True
False
Answer:
true
Explanation:
How much of a 0.74mg sample of uranium-235 will remain after 2.8x10^9
An oxide of nitrogen contain its own volume of nitrogen
its vapour dentity is 22. Find the molecular formula
Of nitrogen Oxide
Answer:
NO2 is the molecular formula of nitrogen Oxide
Explanation:
Correct question
An oxide of nitrogen contain its own volume of nitrogen
its vapour dentity is 23. Find the molecular formula
Of nitrogen Oxide
Solution
As we know
Molecular Weight is equal to two times the vapour density
Hence, the molecular weight of Oxide of nitrogen is 2 * 22 = 44
Molecular weight of Oxide of nitrogen is the sum of atomic weight of nitrogen and oxygen
Molecular weight of Oxide of nitrogen = 14 + 16 *Y
14 + 16 *Y = 46
Y = 2
Hence, the formula is NO2
What is SnO2 compound name
8.
(a) Tick (™) the box next to the correct statement about the mixture.
mixture of four elements
mixture of four compounds
mixture of two elements and two compounds
mixture of one element and three compounds
Answer:
mixture of four compounds
mixture of two elements and two compounds
Explanation:
it can be one of thosecan u tell me if its correct pls I'm studying this tooGiven: 2 AgNO3 + Cu -> Cu(NO3)2 + 2 Ag How many grams of AG can be produced if 200.0g of AgNO3 used?
Answer:
127 g of Ag are made in the reaction.
Explanation:
Reaction is: 2 AgNO₃ + Cu → Cu(NO₃)₂ + 2 Ag
If we only have data from nitrate, we assume the Cu is in excess.
We determine the moles of silver nitrate:
Mass / Molar mass → 200 g / 169.87 g/mol = 1.18 moles
Ratio is 2:2. If 2 moles of silver nitrate produce 2 moles of Ag, then
1.18 moles of salt, will produce 1.18 moles of silver
We convert mass to moles:
1.18 mol . 107.87 g/mol = 127 g
Which element is classified as a
metalloid?
a.
Boron
b. Potassium
C.
Sulfur
d. Xenon
Answer: Boron
Explanation:
Balance this equation
Fe2O2 + C -> Fe + CO2
2 FeO + 1 C ===》2 Fe + 1 CO2
Explanation:
Fe2O2+C-----> 2Fe+CO2
balanced equation..
hope it helps.
stay safe healthy and happy.......You are given a clear-water solution containing potassium nitrate. How could you determine whether the solution is unsaturated, saturated, or supersaturated?
Answer:
If it is unsaturated, we can dissolve some more amounts of potassium nitrate into it Explanation:
Given the balanced equation and the equilibrium concentrations shown:
N2 + 3H2=>2NH3
Equilibrium Concentrations:
N2: 9.76 M
H2: 6.52 M
NH3: 8.62 M
What is the value of K?
Answer:
K= 0.0275
Explanation:
The K of a reaction is defined as the ratio between the concentration of products over concentration of reactants powered to its coefficient. In the reaction of the problem, K is:
K = [NH3]² / [N2] [H2]³
Replacing the concentrations in K:
K = [8.62M]² / [9.76M] [6.52M]³
K= 0.0275Answer:
The value of K is 0.027.
Explanation:
Chemical equilibrium is a state of a reversible chemical system in which no changes are observed as time passes, despite the fact that the substances present continue to react with each other. That is, the chemical equilibrium is established when there are two opposite reactions that take place simultaneously at the same speed.
The Law of Mass Action says that the product of the equilibrium concentrations of the products raised to their respective stoichiometric coefficients, divided by the product of the concentrations of the reactants in the equilibrium raised to their respective stoichiometric coefficients, is a constant for each temperature, called the equilibrium constant Kc. So, being:
aA + bB ⇄ cC + dD
Then: [tex]Kc=\frac{[C]^{c} *[D]^{d} }{[A]^{a} *[B]^{b} }[/tex]
In this case, the reaction is:
N₂ + 3 H₂ ⇒ 2 NH₃
So, the equilibrium constant is:
[tex]Kc=\frac{[NH_{3} ]^{2} }{[N_{2} ]*[H_{2} ]^{3} }[/tex]
Being:
[N₂] = 9.76 [H₂] = 6.52 [NH₃]= 8.62Replacing:
[tex]Kc=\frac{8.62^{2} }{9.76*6.52^{3} }[/tex]
Solving
Kc= 0.027
The value of K is 0.027.
Pick the input(s) into the system. (select all that apply)
A battery powered robot with glowing eyes walking across the floor and making noise.
Radiant/Light Kinetic Energy
Nuclear Potential Energy
Chemical Potential Energy
None of these are inputs
Motion Kinetic Energy
Electrical Kinetic Energy
Answer:
So none of the option is correct.
Explanation:
The energy is the capacity of to work.
It is a scalar quantity.
According to the law of conservation of energy, the energy can neither be created and nor be destroyed, it can transform from one form to another.
For example, in case of a light bulb, the electric energy is converted into the light and heat energy.
When a battery operated robot with glowing eyes moving on the floor, the chemical energy of the battery is converted into the light energy and the kinetic energy so the law of conservation of energy holds good.
PLEASE PLEASE HELP CHEMISTRY
Sulfur (2.56 grams) was burned in a calorimeter with excess 02(g) . The temperature increased from 21.25C to 26.72C. The bomb had a heat capacity of 923 J/C, and the calorimeter contained 815 grams of water
Calculate the heat evolved as the sulfur burned:
Calculate the heat per mole of SO2 formed in the course of the reaction
S(s) + O2 (g) SO2 (g)
What is the pH of a solution with an [H+] of 9.34 x 10-6
Answer:
5.03Explanation:
The pH of a solution can be found by using the formula
[tex]pH = - log [ {H}^{+} ][/tex]
From the question we have
[tex]ph = - log(9.34 \times {10}^{ - 6} ) \\ = 5.0296...[/tex]
We have the final answer as
5.03Hope this helps you
is there a way u could see if the element is acid,base or salt in the periodic table?
Answer:
OK i see
Explanation:
The solubility of a gas is 2.0 g/L at 50.0 kPa of pres-
sure. How much gas will dissolve in 1 L at a pressure
of 10.0 kPa?
our of
Answer:
That means, under 10.0kPa of pressure, 0.4g of gas can be dissolved in 1L
Explanation:
Based on Henry's law, the solubility of the gas is directly proportional to the pressure. The equation is:
P1S2 = P2S1
Where P is pressure and S solubility of 1, initial state and 2, final state of the gas.
Replacing:
P1 = 50.0kPa
S1 = 2.0g/L
P2 = 10.0kPa
S2 = ??
50.0kPa*S2 = 10.0kPa*2.0g/L
S2 = 0.4g/L
That means, under 10.0kPa of pressure, 0.4g of gas can be dissolved in 1L
Answer: 0.4 g/L
Explanation:
S2 = S1 x P2 / P1
S2= 2 g/L x 10 kPa / 50 kPa
CROSS OUT
S2= 2g/L x 10 / 50
S2= 20 g/L/50
S2= .4 g/L
Mole ratios used for conversions come from?
Help needed ASAP, I will mark your answer as brainliest.
Answer:
b
Explanation:
b
Can I please get help with chemistry.
I got these three questions wrong and I’m wondering which answers would be right for the questions.
Answer: The 3rd one
Explanation: Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.
I might be wrong
The 500 cubic centimeter of 0.250 M Na2SO4 solution,
added to an aqueous solution of 15.00 grams of barium
chloride, resulted in the formation of a white precipitate of
barium sulfate. How many moles and how many grams of
barium sulfate are formed, respectively?
Answer:
0.072 moles, 16.776g.
Explanation:
The reaction of Na2SO4 and BaCl2 occurs as follows:
Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq)
To solve this question we must find the moles of each reactant. As the reaction is 1:1, the reactant with the low number of moles is limiting reactant. The moles of limiting reactant = Moles BaSO4. The mass can be obtained with the molar mass of BaSO4 -233.38g/mol-
Moles Na2SO4:
500cm³ = 0.500L * (0.250mol / L) = 0.125 moles
Moles BaCl2 -Molar mass: 208.23g/mol-
15.00g * (1mol / 208.23g) = 0.072 moles
The moles of BaSO4 are 0.072 moles and its mass is:
0.072 moles * (233.38g / mol) = 16.8g ≈ 16.776g
Find the mass of carbon present in 0.92 g of Ethanol, [tex]C_2 H_5 OH[/tex]
0.92 × 1/46 × 2/1 × 12/1 =
0.02 × 2 × 12 =
0.04 × 12 =
0.48 gr carbon
The mass of carbon in one mole of ethanol (46.03 g) is 12.0 g. Thus, mass of carbon in 0.92 g of ethanol is 0.48 g.
What is ethanol?Ethanol is an alcohol with the formula C2H5OH. This organic compound having a molecular weight of 46.03 g/mol.
Atomic mass of carbon = 12.01 g/mol
oxygen = 16 g/mol
hydrogen = 1.01 g/mol
Thus total mass of one mole of ethanol = (12.01×2) +(16) +(6×1.01) = 46.03 g/mol
46.03 g of ethanol contains 2402 g of carbon. Thus mass of carbon in 0.92 g of ethanol is calculated as follows;
(24.02 × 0.92) / 46.03 = 0.48 g
Hence, the mass of carbon in 0.92 g of ethanol is 0.48 g.
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What is the Molarity of a solution made by taking 2.5 moles and dissolving it into enough water to make 5.0 Liters of solution?
Answer:
.5 M
Explanation:
molarity = moles / liters
2.5/5 = .5 M
What is the molarity of a solution containing 9.0 moles of solute in 462 mL of solution
Answer:
[tex]\boxed {\boxed {\sf 19 \ M}}[/tex]
Explanation:
Molarity is a measure of concentration in moles per liter, so the formula is:
[tex]molarity= \frac{moles \ of \ solute}{liters \ of \ solution}}[/tex]
This solution has 9.0 moles of solute and 462 milliliters of solution. We must convert milliliters to liters. Remember that 1 liter contains 1000 milliliters.
Create a ratio.
[tex]\frac{ 1 \ L}{ 1000 \ mL}[/tex]Multiply by the value we are converting: 462 milliliters
[tex]462 \ mL *\frac{ 1 \ L}{ 1000 \ mL}[/tex][tex]462 *\frac{ 1 \ L}{ 1000}[/tex][tex]0.462 \ L[/tex]
Now we know both values and we can solve for the molarity.
moles of solute= 9.0 moles liters of solution = 0.462 L[tex]molarity= \frac{9.0 \ mol}{ 0.462 \ L}[/tex]
Divide.
[tex]molarity= 19.4805195 \ mol/L[/tex]
The original measurements of moles and milliliters have 2 and 3 significant figures respectively. We have to round our answer to the least number of sig figs, which is 2 in this case.
For the number we found, that is the ones place. The 4 in the tenths place (19.4805195) tells us to leave the 9 in the ones place.
[tex]molarity= 19 \ mol/L[/tex]
1 mole per liter is equal to 1 molar or M, so our answer is equal to 19 M.
[tex]molarity \approx 19 \ M[/tex]
The molarity of the solution is approximately 19 M.
what is chemical bonding?and types of chemical bonding there are?
Answer:
There are three primary types of bonding: ionic, covalent, and metallic. Ionic bonding. Definition: An ionic bond is formed when valence electrons are transferred from one atom to the other to complete the outer electron shell. Example: A typical ionically bonded material is NaCl (Salt).Explanation:
Hope it helps
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WILL GIVE BRAINLIEST
During an endothermic reaction, H for the reactants was −600 kJ/mol. Which of the following statements is correct about the H for the products the comparison of the energy in bonds? (5 points)
It is less than −600 kJ/mol, and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.
It is less than −600 kJ/mol, and the amount of energy required to break bonds is less than the amount of energy released in forming bonds.
It is greater than −600 kJ/mol, and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.
It is greater than −600 kJ/mol, and the amount of energy required to break bonds is less than the amount of energy released in forming bonds.
Answer:
It is greater than -600kJ/mol and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.
Explanation:
In an endothermic reaction, the reaction requires a determined amount of energy to occurs.
The reaction of the problem has H = -600kJ/mol. The reaction is endothermic and the energy that the reaction needs is absorbed by the reactants. That means, the energy of products:
Is greater than -600kJ/mol and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.
Answer:
It is greater than -600kJ/mol and the amount of energy required to break bonds is greater than the amount of energy released in forming bonds.
Explanation:
Which statement is correct regarding metamorphic rock formation?
A) The temperature inside Earth is cooler which allows metamorphic rocks to form more quickly.
B) Small pieces of rocks are buried, squeezed, and cemented together.
C) Weathering and erosion cause rocks to break down to form metamorphic rocks.
D) The deeper into Earth’s crust, the higher the pressure that forms metamorphic rocks.
Answer:
d answer is correct
Explanation:
the deeperinto Earth’s crust the higher the pressure that forms mateamorphic rocks
The deeper into Earth’s crust, the higher the pressure that forms metamorphic rocks is the best statement regarding metamorphic rock formation. Thus, option D is correct.
What are the metamorphic rocks?Metamorphism, a process that changes one type of rock into another, is the source of metamorphic rocks. The original rock is frequently subjected to pressures of at least 100 megapascals and temperatures between 150 and 200 °C, which profoundly alter its physical or chemical composition.
They are commonly used in both architecture and art. Statues and decorative objects like vases are made of marble (Figure). Due to its extreme hardness, quartzite is frequently crushed and used to construct train rails.
Therefore, option D is correct, that the best statement about the creation of metamorphic rocks is that the pressure increases the deeper into the Earth's crust.
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Help help help I will give brainliest
Answer:
BUTANE
Explanation:
H3C--CH2--CH2--CH3
HERE, 4 CARBON AND SINGLE BOND SO, BUTANE
Answer:
D.BUTANE
Explanation:
THIS IS MY ANSWER OK