Three elements, A, Q, and Z, have the molar masses indicated in the table below. Given a compound with a composition of 15.66% A and 84.34% Z by mass, what is the empirical formula of this compound? Remember to enter subscripts as normal numbers (ie H2O is entered as H2O) and to enter elements in the same order they were given.

element symbol molar mass
A 15.45 g/mol
Q 20.05 g/mol
Z 41.62 g/mol

The volume of oxygen that would react at STP will be 6.00 L

From the equation of the reaction:

[tex]2Zn + O_2 --- > 2ZnO[/tex]

The mole ratio of [tex]O_2[/tex] to the ZnO produced is 1:2

Mole of 35 g Zn = 35/65.3 = 0.536 moles

Equivalent mole of  [tex]O_2[/tex] that will react = 0.536/2 = 0.268 moles

1 mole of gas at STP = 22.4 L

0.268 moles of gas = 0.268 x 22.4 = 6.00 L

More on stoichiometric calculations can be found here: https://brainly.com/question/27287858

#SPJ1

Answer:

here down below is the anwser

Explanation:

Whereas ionic compounds are usually formed when a metal and a nonmetal combine, covalent compounds are usually formed by a combination of nonmetals. Thus, the periodic table can help us recognize many of the compounds that are covalent.

Answer:

It's the basic unit of an element.

something that makes up everything that has mass

Explanation:

H2 + Cl2 → 2 HCl - Equation Balanced

Explanation:

Two elements H2and Cl2 combine to from a single compound, HCl. Hence, it is a combination reaction As two elements combine to from a compound, it is an element - element combination.

I hope it'll help you...

Boyle's law gave the relation between the pressure and the volume of the gas. The equation can be represented as PV = constant (T and n are constant).

Boyle's law gave the inverse relationship between the pressure and the volume of the hypothetical ideal gas when the moles and the temperature are constant. It can be shown as PV = constant.

The volume of the gas can be compressed by increasing the pressure, and the volume of the gas can be expanded by decreasing the pressure of the gas.

Therefore, Boyle's law gave the PV = constant.

Learn more about Boyle's law here:

https://brainly.com/question/13362447

#SPJ1

Answer:

Hydronium (H3O+) ions

Explanation:

Acids increase the concentration of hydronium ions in water and thus lower the pH (make it more acidic)

Answer:

The answer for this question is Hydrogen Ions

Answer:

warm clothing hiking sticks safter gear. food water. the basics

Answer:

is agriculture that makes healthy food,healthy soil,healthy plants and healthy environments a priority,along with crop productivity

Answer:

Partial pressure of O2 = 4.93 atm

Explanation:

PV = n RT        R = .082057 L-atm/mol-K

n = 6.3 + 8.15 = 14.45 moles

348 C = 621.15 K

P (65.1) = 14.45 ( .082057)(621.15) = 11.31 atm

Now the fraction of pressure from Oxygen is

   6.3 / (6.3+8.15)  * 11.31 = 4.93 atm

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Let's balance the given equation ~

[tex]\qquad \sf  \dashrightarrow \:S_8 + O_2 \rightarrow SO_3[/tex]

[tex] \textsf{Step 1 - balance Sulphur (S) on both sides} [/tex]

[tex] \textsf{[ By multiplying} [/tex] [tex] \sf{SO_3} [/tex] [tex] \textsf{by 8 on product side ]} [/tex]

[tex]\qquad \sf  \dashrightarrow \:S_8 + O_2 \rightarrow 8 \: SO_3[/tex]

[tex] \textsf{Step 2 - balance Oxygen (O) on both sides} [/tex]

[tex] \textsf{[ By multiplying} [/tex] [tex] \sf{O_2} [/tex] [tex] \textsf{by 12 on reactant side ]} [/tex]

[tex]\qquad \sf  \dashrightarrow \:S_8 +12 \: O_2 \rightarrow 8 \: SO_3[/tex]

So, we can infer that the Correct choice is D

Answer: Most of Earth's carbon was inherited directly from the interstellar medium, it is the material that exists in space between stars in a galaxy.

Explanation: All of the carbon and oxygen in all living things are made in the nuclear fusion reactors that we call stars. The early stars are massive and short-lived. They consume hydrogen, helium, and lithium and produce heavier elements.

Hope this helps!

Answer:

d) 6.0 moles

Explanation:

M = moles of solute/liters of solution

3 0M = x/2.0

2.0L×3 0M = x/2.0L×2.0L

6.0 moles = x

Answer:

A) Which brand and amount of fertilizer will work best?

Explanation:

A) is the best answer because it takes into account all of the variables. The variables seem to be the amount of fertilizer, average plant growth, and brand of fertilizer. The independent variables are amount of fertilizer and fertilizer brand. The dependent variable is the plant growth.

B) is not the best answer because it does not include the amount of fertilizer. Because this variable is changing, it is important to consider.

C) is not the best answer because it does not take the type of fertilizer into account. If the researcher were only concerned with how the amount of fertilizer affects plant growth, it would not be necessary to include 3 different types of fertilizer.

D) is not the best answer because this doesn't explain why the researcher used different types of fertilizer.

Answer:

It can be said that water will take more heat to raise its temperature by 1°C than copper. Details about specific heat can be found below.

Specific heat capacity of a substance can be defined as the amount of heat (J) absorbed per unit mass (kg) of the material when its temperature increases 1 K or 1 °C.

According to this question, water has a specific heat of 4.184 J/g°C while Copper metal has a specific heat of 0.385 J/g°C. This shows that water has a higher specific heat.

Therefore, it can be said that water will take more heat to raise its temperature by 1°C than copper metal.

Learn more about specific heat capacity at: https://brainly.com/question/1747943

#SPJ1

Answer:

Explanation:

Models help scientists predict the polarity of molecules because the bond polarity should be determined that lies between the molecule atoms.

Models help scientists predict the polarity of molecules because the bond polarity should be determined that lies between the molecule atoms.

You can use the difference in electronegativity of two atoms to predict whether they make polar, nonpolar or ionic bonds. Water is a well-known example of a polar molecule.

The information with respect to the atom is as follows:

Simply mix the liquid with an equal part of water and allow the mixture to sit undisturbed. Examine the mixture after the liquids have sat together for a time. If they have not separated, but have formed a solution, the unknown liquid is polar. If there is a clear boundary between the two liquids, it is non-polar.

Learn more about  polarity of molecules here:https://brainly.com/question/15106377

#SPJ2

Say out loud what you want to remember.

Take notes by hand, not on a computer.

Chunk your study sessions.

Test yourself. A lot.

Change the way you practice.

Exercise regularly.

Get more sleep.

Learn several subjects in succession.

Answer:

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas.

Answer:

Primary consumers are herbivores, feeding on plants

Explanation:

:)

Primary consumers are at the second trophic level of the food pyramid. This means that they eat producers. An example of a primary consumer would be a grasshopper eating grass. Primary consumers get eaten by secondary consumers, such as a rabbit who eats grass, and the rabbit gets eaten by a fox.

Answer:

most often helium and argon, the least expensive—are used to provide chemically unreactive environments for such operations as cutting, welding, and refining of metals such as aluminum (atmospheric oxygen and, in some cases, nitrogen or carbon dioxide would react with the hot metal).

hope this helps

The best approach would be to use soap to break up the oil since the soap is biodegradable and has no effect on the environment.

A clean up effort is a deliberate effort to recover the environment after an environmental hazard has occurred such as an oil spill.

In carrying out a clean up exercise, we seek for the most environmentally friendly approach.

In this case, the best approach would be to use soap to break up the oil since the soap is biodegradable and has no effect on the environment.

Learn more about environmental clean up:https://brainly.com/question/2566370

#SPJ1

Answer:

4 2/3 days

Explanation:

31.25   =   250 ( 1/2)^n      solve for n

31.25/250   = 1/2 ^n    log both sides to find n = 3 half lives

14 days = 3 half lives

14/3 = 4 2/3 day half life

The products in the equation would be  [tex]CO_2[/tex], [tex]SO_2[/tex], and [tex]H_2O[/tex].

From the equation of the reaction:

[tex]CH_3SH + 4O_2 --- > CO_2 + SO_2 +2H_2O[/tex]

The products are [tex]CO_2[/tex], [tex]SO_2[/tex], and [tex]H_2O[/tex].

This is because, for every chemical equation, the reactants are always at the back of arrows while products are at the front of arrows. In other words, reactants are usually on the left-hand side while products are on the right-hand side.

More on chemical reactions can be found here:https://brainly.com/question/22817140

#SPJ2

Answer:

Explanation:

own definitions for the words definite and occupy.

Example sentence

Solid is the state of matter that has a definite shape and volume.

definite:

__________

Example sentence

A larger container will allow a gas to occupy more space.

occupy:

In order to satisfy charge conservation and lepton number conservation the other products must be neutron.

The principle of conservation of mass states that, the sum of the initial mass of reactants must be equal to final mass of the products.

[tex]_{15}^{30}P\ --- > \ _{14}^{30} Si \ + \ ^{0}_{1} n[/tex]

The balanced reaction of radioactive decay of phosphorous shows conservation of mass.

Thus, in order to satisfy charge conservation and lepton number conservation the other products must be neutron.

Learn more about radioactive decay here: https://brainly.com/question/1383030

#SPJ1

An element is a pure substance that cannot be separated into simpler substances by chemical or physical means

Answer:

It is an element.

Explanation:

chemical element, also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.

HOPE IT HELPS.

PLEASE MARK ME AS BRAINLIEST.

Answer:

If I remember correctly it should be B because it went from Cu^2 to Cu^0

Explanation:

During the riding of the steep mountain, the body needs more energy because going up consume more energy and oxygen due to additional effect of gravity on your momentum.

Cycling is a good exercise as swimming, while cycling, happy hormones are released like dopamine and serotonin.

The primary forces that work while cycling are gravity, friction, rolling resistance, and air resistance.

Thus, During the riding of the steep mountain, the bod needs more energy because going up consume more energy and oxygen due to additional effect of gravity on your momentum.

Learn more about effect of cycling

https://brainly.com/question/26055886

#SPJ1

Dipole to Dipole force

Explanation:

A dipole to dipole forces exists between these molecules