How many grams of CO2; will be produced if 13.56 moles of O2, are used to completion? (C2H4 + 3O2=2 CO2, + 2 H2O)

It's important to know that gases don't have a defined volume as solids do because they don't have a definite shape.

Also, gas partcles are not tied together because their intermolecular forces are weak, this enables them to travel away one from another.

Therefore, the answer is A.

Answer:

Fission and fusion

Explanation: Fission and fusion are two physical processes that produce massive amounts of energy from atoms.

Hope this helps!

1) List the known and unknown quantities.

Sample: O2

Amount of substance: 0.650 mol O2.

Volume: 1.00 L.

Pressure: 20.00 atm.

Ideal gas constant: 0.082057 L * atm * K^(-1) * mol^(-1)

Temperature: unknown.

2) Set the equation.

Ideal gas law.

3) Plug in the known quantities and solve for T.

4) Convert K to ºC.

The temperature of the gas under these conditions is 101.81ºC.

.

Here, there are 2 conditions of the gas here.

The next equation is used: (1)

Data: conditions 1

P1 = pressure, in mmHg = 571.6 mmHg

T1 = temperature, in K = 25 °C + 273 = 298 K

V1 = 2,275 mL

-------------

Data: conditions 2

P2 = needs to be calculated

T2 = 175 °C + 273 = 448 K

V2 = 1,255 mL

--------------

From (1), P2 is cleared:

(P1 x V1/T1) x T2/V2 = P2

(571.6 mmHg x 2,275 mL/298 K) x (448 K/1,255 mL) = P2

1558 mmHg = P2

Answer: P2 = 1558 mmHg

The accurate responses are;

a) Number of moles of permanganate ion = 8.89 * 10^-4 moles

b) Number of moles of iron = 4.4 * 10^-3 moles

c) Mass of iron in the sample = 0.25 g

d) Percentage of iron in the sample = 14.7 %

The term titration refers to the kind of reaction in which the amount of substance can be obtained by the accurate determination of the volumes of the substances that have reacted in the process.

a) The number of moles of the permanganate ion that are involved is obtained from;

36.44 /1000 L * 0.0244 M = 8.89 * 10^-4 moles

b) Given that the reaction is 1:5 in the mole ratio of the permanganate ion and the iron III ion

1 mole of permanganate reacts with 5 moles of iron II

8.89 * 10^-4 moles reacts with 8.89 * 10^-4 moles* 5 moles/ 1 mole

= 4.4 * 10^-3 moles

c) Mass of the iron II ion in the sample = 4.4 * 10^-3 moles * 56 g/mol = 0.25 g

d) Percent of the iron in the sample = 0.25 g/1.705g * 100/1

= 14.7 %

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Answer

B. The bonds in the compound are covalent

Explanation

The carbon, oxygen, and hydrogen that combine in a specific ratio to form the sugar are nonmetals. From what was learned about elements and the periodic table, nonmetals form covalent bonds among themselves to form compounds.

So what is true about the bonding in sugar is:

B. The bonds in the compound are covalent.

1.00147g of of cobalt-60 remain after 104.7 min if you start with 1024g.

According to nuclear decay [tex]N_{t} = N_{0 } e^[/tex]^-λt

for half-life ----[tex]t_{\frac{1}{2} }[/tex] =  0.693/λ

half-life of cobalt [tex]t_{\frac{1}{2} }[/tex] = 10.47

initial amount [tex]N_{0}[/tex] = 1024g.

t = 104.7 min

final product [tex]N_{t}[/tex] =?

[tex]t_{\frac{1}{2} }[/tex] = 0.69/λ   ( according to half-life)

10.47 = 0.693/λ

λ = 0.693/10.47 [tex]min^{-1}[/tex]

[tex]N_{t} = N_{0 } e^[/tex]^-λt

 [tex]N_{t}[/tex] = 1024[tex]\times e^{\frac{-0.693}{10.47} } \times 104.7 min[/tex]

[tex]N_{t}[/tex] = 1024 g[tex]\times e^{-6.93}[/tex]

[tex]N_{t}[/tex] = 1.00147g

Half-life is the time it takes for a quantity to decrease to half its original value. This term is often used in nuclear physics to describe how quickly unstable atoms decay radioactively or how long stable atoms last. The term is also used more generally to describe any type of exponential decay.

The half-life of a radioactive isotope is the  time required for half of the radioactive isotope to decay. The half-life of a given radioactive isotope is constant. it is unaffected by conditions and is independent of the initial amount of that isotope.

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Answer:

1. 30 neutrons

2. 26 electrons

Explanation:

The number of neutron = mass - #protons = 56 - 26 = 30

The number of electrons = #protons = 26

In order to solve this question, we can use the electronegativity table (or also just a regular periodic table), which will give us the values of electronegativity for each element.

As we can see in this table, the least electronegative element will be Al, with only 1.61 of value. If you were with a regular periodic table, you could find this answer by thinking about the periodic table trend, or we can also call it a rule, that in most elements the electronegativity will grow in value from left to right and from the bottom to the top, then you would also get Al as your answer

Answer = Al, letter D

Answer:

In a nuclear fusion reaction, two small, light 'nuclei' (hydrogen atoms) combine under extreme 'temperature' and pressure to form one larger, heavier nucleus (helium).

In order to calculate this question, we will use the reaction quotient Q, which has a very similar formula as the equilibrium formula, but this Q can be calculated not just in equilibrium (where Q = K) but in any part of the reaction, so K is the equilibrium, and Q is what is used to see where the reaction will shift towards until it reaches equilibrium, we can have three possible outcomes:

Q = K, the reaction is already in equilibrium

Q > K, the reaction will proceed in the reverse direction

Q < K, the reaction will proceed in the forward direction

Let's set up the formula:

Q = [products]/[reactants], the brackets mean Concentration of each compound. Now adding our compounds

Q = [BrCl]^2/[Br2]*[Cl2], the BrCl is raised to 2 because we have 2 BrCl in the reaction, this is a rule for the equilibrium formula, we use the coefficient in front of the compound and raise its concentration to this number

Now we need the concentration of each compound, to find it we will use the Molarity formula

M = n/V

M = 0.15/2

M = 0.075M, notice that since we have the same number of moles and volume for every compound, we will have the same concentration for every compound, going back to our formula

Q = [0.075]^2/[0.075][0.075]

Q = 1.0

Since K = 7.0 and Q = 1.0

K > Q, the reaction will proceed in the forward direction in order to increase the concentration of 2 BrCl in order to finally reach Q=K

The n and l values and the number of orbitals for sublevel 5g is :

5g shell , n= 5 subshell g , l = 4, Number of orbitals for sublevel = 9.

There are total four quantum numbers:

1) Principal quantum number , n

2) Angular quantum number , l

3) Magnetic quantum number , ml

4) spin quantum number , ms

For 5g shell, n = 5

subshell g , l = 4     ....0 - s , 1 - p , 2 - d, 3 - f, 4 -g

number of orbitals in subshell = (2l + 1)  ( 2×4 + 1) = 9

Thus,  The n and l values and the number of orbitals for sublevel 5g is :

5g shell , n= 5 subshell g , l = 4, Number of orbitals for sublevel = 9.

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Explanation:

The rate of a reaction is defined as the rate of disappearance of reactants in a reaction or the rate of conversion of appearance of products during a reaction.

The rate of a reaction depends on the concentration of the reactants, the temperature of the reaction, the nature of reactants, and the presence or absence of catalysts during the reaction.

The surface of reactants comes into play. Reactants with high surface areas react faster than reactants with fewer surface areas. Hence, powdery reactants react faster than solid reactants.

Answer: C. The powdered magnesium react faster because it has a greater surface area.

Mole equation: [tex]n=\dfrac{m}{MM}[/tex]

To find mass given number of atoms:

We're given:

In the chemical formula, which is Ag, there is only 1 atom.

Divide [tex]1.81*10^{23}[/tex] atoms by 1 atom to get the number of molecules in the silver ring:

[tex]1.81*10^{23}\div 1\\=1.81*10^{23}[/tex]

Therefore, there are [tex]1.81*10^{23}[/tex] molecules in the silver ring.

Now, divide [tex]1.81*10^{23}[/tex] molecules by Avogadro's number to find n:

[tex]\dfrac{1.81*10^{23}}{6.02*10^{23}}\\\\=\dfrac{1.81}{6.02}\\\\=\dfrac{1.81}{6.02}\\\\= 0.30066[/tex]

Therefore, the sample has 0.30066 mol.

Finally, solve for the mass using the moles equation:

[tex]n=\dfrac{m}{MM}[/tex]

⇒ Rearrange the equation:

[tex]m=n*MM[/tex]

⇒ MM of Ag = 107.87 g/mol

⇒ Plug in given information:

[tex]m=0.30066* 107.87\\m=32.4[/tex]

Therefore, the mass of the ring is 32.4 g.

32.4 g

Answer:

limonene molecule.

Explanation:

A chemical reaction is known to be balanced if the number of elements on the reactant side is equal to that of the product.

Given the reactant of a chemical reaction between calcium nitrate and Lithium, the balanced reaction is given as:

Hence the product of the balanced chemical reaction are Calcium and Lithium Nitrate.

A component that many space agencies use is liquid hydrogen, which can be abbreviated as LH2.

And another fuel very used in rockets is kerosene which is a hydrocarbons mixture of other compounds that fuel.

Answer:

Most liquid chemical rockets use two separate propellants: a fuel and an oxidizer. Typical fuels include kerosene, alcohol, hydrazine and its derivatives, and liquid hydrogen. Many others have been tested and used. Oxidizers include nitric acid, nitrogen tetroxide, liquid oxygen, and liquid fluorine.

Explanation:

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The volume can be measured by the displacement method and by the use of dimensions.

The term volume has to do with the space that is occupied by a substance. Thus we know that a solid has a definite volume and a definite shape while a liquid has a definite volume but does not have a definite shape. On the other hand, the gases does not have a definite shape or a definite volume.

In this case, we are staying with the volume of a solid object because this is what have been implied by the question that we have before us here.

There are two ways that we can use to obtain the volume of an object and these two methods are;

1) By calculation:  In this method, the dimensions of the object is measured and the volume of the object can be obtained from the dimensions of the object.

2) By displacement method: This involves a situation, in which a give volume of water is measured and then the object is added and the volume of the water that is displaced is measured and then taken as the volume of the object.

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Empirical formula:

Step 1

Information already provided

The mass percent composition:

40.9 % C

4.58 % H

54.5 % O

Information needed: from the periodic table

For C) 1 mol = 12.01 g

For H) 1 mol = 1.008 g

For O) 1 mol = 15.99 g

---------------------------

Step 2

A sample of 100 g is assumed, so:

40.9 % C => 40.9 g C

4.58 % H => 4.58 g H

54.5 % O => 54.5 g O

--------------------------

Step 3

Convert mass into moles:

40.9 g C x (1 mol/12.01 g) = 3.40 moles C

4.58 g H x (1 mol/1.008 g) = 4.54 moles H

54.5 g O x (1 mol/15.99 g) = 3.40 moles O

------------------------

Step 4

All moles calculated in step 3 need to be divided by the smallest one.

3.40 moles C/3.40 moles = 1

4.54 moles H/3.40 moles = 1.33

3.40 moles O/3.40 moles = 1

-----------------------

Step 5

Integer numbers are needed, so let's multiply by 3 all of them in step 4

Therefore,

For C) 3

For H) 3.99 = 4 approx.

For O) 3

All these numbers calculated will be the subindexes in ascorbic acid

Answer:

Empirical formula: C3H4O3

Considering the definition of STP conditions, 4.83 × 10⁻³ moles of HF will occupy a volume of 0.108192 L at STP.

STP conditions is the abbreviation that refers to standard temperature and pressure. The standard value for pressure is 1 atmosphere and the standard value for temperature is 0°C. They are valid reference values for all gases, and under these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

In this case, you have 0.804 moles CCl₄. You can apply the following rule of three: if by definition of STP conditions 1 mole of CCl₄ occupies a volume of 22.4 liters, 0.804 moles occupies how much volume?

volume= (0.804 moles ×22.4 L)÷ 1 mole

volume= 18.0096 L

Finally, the volume will be 18.0096 L at STP.

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Color of reactant. Option B is correct

This is defined as the speed at which a reaction takes place. It can be expressed in terms of the concentration of reactants or products formed per unit time.

The following are the factors that affects reaction rate.

- concentration of a reactant

- Temperature

- Nature of the reactant

- Surface Area

- Catalysts.

Based on the explanations above, we can conclude that the color of reactant will not affect the rate of a reaction

Write the balanced chemical equation for the reaction as follows:

Given:

Concentration of sodium hydroxide =1.50 mol/L

Volume of sodium hydroxide = 20 mL

Concentration of sulfuric acid = x

Volume of sulfuric acid = 20 mL

Firstly, we will determine the moles that is in 20 mL of 1.5 M NaOH:

Based on the balanced chemical equation and the moles of NaOH we can use stoichiometry (ratios) to determine the moles of 20 mL sulfuric acid:

Now that we know how many moles are in 20 mL of H2SO4, we can determine the moles in 1000mL (initial concentration):

Answer: D) 0.75 mol/L,

The correct formula of zinc phosphate is Zn₃(PO₄)₂.

Chemical formula is a notation indicating the number of atoms of each element present in a compound.

The chemical or molecular formula shows the type of atoms of an element in a chemical compound and the number of each atoms in the element.

Zinc phosphate is a compound that possess the following elements:

This means that the chemical formula of zinc phosphate will show the number of atoms of zinc, phosphorus and oxygen present in the compound.

Therefore, this means that the chemical formula of the compound is Zn₃(PO₄)₂.

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Was a bit lengthy but I guess you do it like this?

According to given statement NaCI compounds are more likely to dissolve in water.

Polar solvents, which do have "positive" and "negative" charges at different points throughout their structures, can dissolve other polar compounds. Acetone, methanol, dimethylformamide (DMF), dimethylsulfoxide (DMSO), isopropanol, and ethanol are some other polar solvents. A few of these solvents is water.

Due to the uneven distribution of its electron density, water is a polar molecule. This demonstrates that water is indeed a polar molecule because hydrogen and oxygen have different electronegativities. The fact that water can dissolve more chemicals compared to any other liquid makes it known as the "universal solvent."

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when a bunsen burner is properly adjusted, the flame looks Blue with no gap between the burner and the flame.

A Bunsen burner is a particular kind of gas burner that is frequently utilized as a heat source in lab investigations. The barrel or chimney of the burner is made up of a straight tube that extends vertically from a flat base. At the bottom of the chimney, liquid petroleum gas, such as propane or butane, or natural gas, primarily methane, is delivered.

The base of the chimney on Bunsen burners typically has a hose barb installed so that rubber tubing may supply the gas from a gas nozzle on the lab bench.

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The group of organic substances known as organic carbonic acids includes zinc carbonate. Compounds with the carbonic acid functional group are known as organic carbonic acids. Zinc carbonate is a substance with a very low acidity

An odourless, white, sand-like substance known as zinc carbonate. Cosmetics, lotions, ceramics, pottery, rubber, feed additives, and medications all use it.

Zinc (Zn), carbon (C), and oxygen make up the inorganic compound known as zinc carbonate (O). ZnCO3 is its chemical composition. Oxygen is -2, carbon is +4, and zinc has an oxidation state of +2.

With the chemical formula ZnCO3, zinc carbonate is a white, insoluble zinc salt. By reacting with the proper amounts of sulphate, it can be used to create the majority of straightforward zinc salts. Smithsonite, also known as zinc spar, is a mineral that contains zinc carbonate.

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To solve this question, we need to use the Clapeyron formula.

Clapeyron's formula is a mathematical expression that relates quantities such as pressure (P), volume (V), temperature (T) and the number of particles (n) that make up an ideal gas.

The formula is: PV = nRT

First, let's discover the number in moles of N2. We have:

P = 1.5 atm

V = 10 L

n = ???

R = 0.082 atm.L/mol.k

T = 273 K

1.5 x 10 = n x 0.082 x 273

15 = n x 22.386

n = 15/22.386

n = 0.67 moles

As we can see in the chemical reaction equation, the ratio between NaN3 and N2 is 2:3.

So:

2 mol of NaN3 --- 3 mol of N2

x mol of NaN2 --- 0.67 moles

3x = 2 x 0.67

x = 0.45 moles of NaN3

Now we transform this value into grams, using NaN3 formula mass, which is 65 g/mol:

65 g ---- 1 mol

x g ---- 0.45 mol

x = 29 g

Answer: 29 g of NaN3

Answer

A. catalyst

Explanation

Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed.

Explanation:

The microwave receives, from a transformer (energy source), a fixed voltage and generates, through the vibration of electrons in its resonant cavities, electromagnetic waves inside the device.

Answer: D. Electrical to electromagnetic