A graduated cylinder contains 10. 00 ml water. A 14. 74 g piece of aluminum is added to the water, and the volume rises to 15. 46 ml. What is the density of the aluminum in g/ml?

When hydrogen and oxygen combine to form water (H2O), the limiting reactant is determined by the relative numbers of hydrogen and oxygen molecules present. The limiting reactant is the reactant that is completely consumed in a reaction, and it limits the amount of products that can be produced.

The reactant that is present in excess is called the excess reactant. The balanced chemical equation for the reaction of hydrogen gas (H2) and oxygen gas (O2) to form water (H2O) is:2H2(g) + O2(g) → 2H2O(g)To figure out which reactant is the limiting reactant, we must first convert the given masses of hydrogen and oxygen to the number of moles present. We can use the molar mass of each substance and the given masses to determine the number of moles:

Mass of hydrogen (H2) = 5.00 gMolar mass of H2 = 2.02 g/molNumber of moles of H2 = 5.00 g / 2.02 g/mol ≈ 2.48 molMass of oxygen (O2) = 10.0 gMolar mass of O2 = 32.00 g/molNumber of moles of O2 = 10.0 g / 32.00 g/mol ≈ 0.3125 molBased on the balanced chemical equation, we can see that 2 moles of hydrogen react with 1 mole of oxygen to form 2 moles of water.

Therefore, for every mole of oxygen that reacts, 2 moles of hydrogen are required. Since we have more moles of hydrogen than moles of oxygen, hydrogen is present in excess and oxygen is the limiting reactant.The limiting reactant is the reactant that is completely consumed in the reaction and it limits the amount of products that can be produced. Therefore, in the reaction between hydrogen and oxygen, oxygen is the limiting reactant.

For more such questions on molecules

https://brainly.com/question/24191825

#SPJ8

Brass is a substitutional alloy of zinc and copper solution. Zinc has a molality of 4.07 m in solution and a molarity of 28.11 M.

what is an alloy ?

An alloy is a chemical compound composed of at least one metal. In contrast to chemical compounds containing metallic bases, an alloy retains all of the properties of a metal in the resulting material, such as electrical conductivity, ductility, opacity, and lustre, but may have properties that differ from those of pure metals, such as increased strength or hardness. In some circumstances, an alloy can lower the total cost of a material while retaining critical qualities. In other circumstances, the combination gives the individual metal elements synergistic qualities like corrosion resistance or mechanical strength.

copper mass = 79 gm

zinc mass = 21 gm

molality=mass of solutex1000 / molar mass of solute x mass of solvent

Mass Zinc = 21 g

Molar mass Zinc = 65.3 g/mol

Mass copper = 79 g

Substituting values in the above equation:

molality =21x1000 /65.3x79

=4.07

volume of the zinc

vol=m/d  

= 100/8.74

Molarity=solute mass x1000/molar mass of  solute x vol of sol

=21x100/65.3x11.44

=28.11

So  molality = 4.07 m and  molarity = 28.11 M.

To learn more about alloy follow the given link: https://brainly.com/question/13071817

#SPJ4

Answer:

A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.

Answer:

C

Explanation:

What is the IUPAC name for this compound?

The given compound has five carbon atoms in the chain, with an OH group attached to the fifth carbon atom from the left to right. There is also a line with a single terminus (no vertices) from the third carbon atom. The line-angle structure of the given compound is as follows: The common name of the given compound is 3-methyl pentanol. The IUPAC name of this compound can be derived by following the IUPAC rules for naming alcohols. According to the IUPAC rules, alcohols are named by changing the -e suffix of the parent alkane to -ol. The position of the hydroxyl group (-OH) is indicated by the number of the carbon atom to which it is attached. In the case of branched-chain alcohols, the position of the -OH group is indicated by the lowest number possible. The given compound has a branched chain, and the -OH group is attached to the fifth carbon atom. Hence, the parent alkane is pentane. The -e suffix of pentane is replaced by -ol to obtain the suffix of the alcohol. Therefore, the suffix of the given compound is pentan-1-ol. Finally, the position of the methyl group is indicated by the prefix 3-methyl. Hence, the IUPAC name of the given compound is 3-methylpentan-1-ol.

for more information on IUPAC : https://brainly.com/question/30086566

#SPJ11

The statement that the molecular formula mass for sulfur dioxide is 54 grams is false. The correct molecular formula mass for sulfur dioxide is 64 grams.

Sulfur dioxide (SO2) is a chemical compound composed of one sulfur atom (atomic mass of 32 grams) and two oxygen atoms (atomic mass of 16 grams each). To calculate the molecular formula mass of sulfur dioxide, we add the atomic masses of each atom in the compound. In this case, 32 grams (sulfur) + 16 grams (oxygen) + 16 grams (oxygen) equals a total molecular formula mass of 64 grams. Therefore, the molecular formula mass for sulfur dioxide is 64 grams, not 54 grams.

Learn more about formula mass here: brainly.com/question/28647347

#SPJ11

Molarity definition: Molarity (M) is a measure of the concentration of a solute in a solution, expressed as the number of moles of solute per liter of solution.

Molarity formula: To calculate molarity, you can use the formula M = moles of solute / volume of solution (in liters).
Example: If you have 1 mole of NaCl dissolved in 2 liters of water, the molarity of the NaCl solution would be M = 1 mol / 2 L = 0.5 M.

Applications: Molarity is commonly used in chemistry to express concentrations, prepare solutions with specific concentrations, and perform stoichiometry calculations in reactions involving solutions.

To know more about Molarity visit:-

https://brainly.com/question/8732513

#SPJ11

The amount of heat released is 12205.25 J.

To calculate the amount of heat released, we will use the following equation: q = m*c*ΔT, where q is the heat released, m is the mass of the metal, c is the specific heat of the metal, and ΔT is the change in temperature.

Using the information given, we can calculate the amount of heat released:

q = (25.0 g)*(0.568 J/g°C)*(99.0°C - 22.5°C) = 12205.25 J

Therefore, the amount of heat released is 12205.25 J.

To know more about Heat:

https://brainly.com/question/13043579

#SPJ11

CaF₂ ⇒ Ca²⁺ + 2F⁻

1.75       1.75     3.5

Answer:

16

Explanation:

Atomic mass: 32.065 u

Electrons per shell: 2,8,6

Symbol: S

Correct option is c. 0

Let's discuss it further below.

In the Lewis structure for formaldehyde (H2CO), where C is the central atom, the formal charge on C is:

Step 1: Determine the number of valence electrons for C. Carbon has 4 valence electrons.
Step 2: Calculate the number of electrons assigned to C in the Lewis structure. In formaldehyde, C is bonded to 2 H atoms (each with 1 bond) and 1 O atom (with a double bond). This gives C a total of 4 bonds, so it has 4 assigned electrons.
Step 3: Calculate the formal charge on C using the formula: Formal Charge = (Valence Electrons) - (Assigned Electrons). Thus, Formal Charge on C = (4) - (4) = 0.

So, the formal charge on C in the Lewis structure for formaldehyde is 0 (option c).

Learn more about Lewis structure.

brainly.com/question/4144781

#SPJ11

Answer:

The correct answer is - 75 grams.

Explanation:

Half-life is the amount of time that is used by the given amount of substance or element to make it half of the initial amount of a particular radioactive substance.

Equation for alpha decay for radon

\(^222_{86}Rn\Rightarrow^{218}_{84}Po  \)

we need to calculate the left amount of radon after given time

using formula half life

\(N(t)=N_{0}e^{-\lambda t}\)

\(\lambda =\dfrac{0.693}{3.82}\)

\(\lambda=0.1814\)

\(N(3.82)=150\times e^{-0.1814\times3.82}\)

\(N(3.82)=75.0\ g\)

Thus, the left amount of radon is - 75 grams.

The law of conservation of matter says that in chemical reaction and the statement is the total mass of the product must equal the total mass of the reactant

The law of conservation of mass states that the mass in an isolated system is neither created nor destroyed by chemical reaction or physical transformation and according to the law of conservation of mass and the mass of the product in a chemical reaction must equal to the reactant that means total mass of the product must equal the total mass of the reactant

Know more about chemical reaction

https://brainly.com/question/28711001

#SPJ1

Algae blooms are most often caused by eutrophication.

Algae blooms are are dense layers of tiny green plants that occur on the surface of lakes and other bodies of water when there is an overabundance of nutrients (primarily phosphorus) on which algae depend.

Algae species tend to proliferate in growth (bloom) in the presence of abundance nutrients. This abundance of nutrients is as a result of a process called eutrophication.

Eutrophication is the ecosystem's response to the addition of artificial or natural nutrients, mainly phosphates, through detergents, fertilizers, or sewage, to an aquatic system.

Learn more about eutrophication at: https://brainly.com/question/13232104

#SPJ1

Answer:

Evaporation

Explanation:

Water at the surface of the ocean rivers and lakes can become water vapor and move into the atmosphere with a little added energy from the Sun through a process called evaporation. Snow and ice can also become water vapor through a process called sublimation. See also why do variations in generation time exist

Answer: part 1 of 2

1. The amount required of H₂ = 11.0 g.

2. The amount required of O₂ = 88.0 g.

Explanation:

The balanced equation for the mentioned reaction is:

2H₂(g) + O₂(g) → 2H₂O,

It is clear that 2.0 moles of H₂ react with 1.0 mole of O₂ to produce 2.0 moles of H₂O.

Q1: How much hydrogen would be required to produce 5.5 mol of water?

Using cross multiplication:

2.0 mol of H₂ produce → 2.0 mol of H₂O, from stichiometry.

??? mol of H₂ produce → 5.5 mol of H₂O.

∴ the no. of moles of H₂ needed to produce 5.5 mol of water = (2.0 mol)(5.5 mol)/(2.0 mol) = 5.5 mol.

Now, we can get the mass of H₂ needed to to produce 5.5 mol of water:

mass of H₂ = (no. of moles)(molar mass) = (5.5 mol)(2.0 g/mol) = 11.0 g.

Q2: How much oxygen would be required?

Using cross multiplication:

1.0 mol of O₂ produce → 2.0 mol of H₂O, from stichiometry.

??? mol of O₂ produce → 5.5 mol of H₂O.

∴ the no. of moles of O₂ needed to produce 5.5 mol of water = (1.0 mol)(5.5 mol)/(2.0 mol) = 2.75 mol.

Now, we can get the mass of O₂ needed to to produce 5.5 mol of water:

mass of O₂ = (no. of moles)(molar mass) = (2.75 mol)(32.0 g/mol) = 88.0 g.

Answer:

The average speed is = 11.1m/s

Explanation:

Recall that average speed is defined as the total distance traveled with respect to the total number of time, therefore we say that the total distance traveled is 40Km according to your question, remember, the unit of speed is metre per second, so you change 40km by multiplying it with 1000, recall that, 1000m = 1km, so 40km×1000m = 40,000m, also 1h= 60×60, =3600s

Remember the formula for average speed is = Total distance traveled÷ total time taken

Thus; 40000m/3600s

Then we had, 11.1m/s...

You can ask questions

Answer:

City B has the larger annual temperature range

Explanation:

This is correct option because generally the northern side of the equator is high in temperature than the southern hemisphere part.

Since the southern side of the equator or Southern Hemisphere, where city A resides will generally have higher altitude or rise, so this creates higher average temperature.

The maximum mass of CO₂ produced from the decomposition of 25.5 grams of NaHCO₃ is 6.68 g

2NaHCO₃ -> Na₂CO₃ + H₂O + CO₂

Molar mass of NaHCO₃ = 84 g/mol

Mass of NaHCO₃ from the balanced equation = 2 × 84 = 168 g

Molar mass of CO₂ = 44 g/mol

Mass of CO₂ from the balanced equation = 1 × 44 = 44 g

SUMMARY

From the balanced equation above,

168 g of NaHCO₃ decomposed to produce 44 g of CO₂

From the balanced equation above,

168 g of NaHCO₃ decomposed to produce 44 g of CO₂

Therefore,

25.5 g of NaHCO₃ will decompose to produce = (25.5 × 44) / 168 = 6.68 g of CO₂

Thus, 6.68 g of CO₂ were obtained from the reaction

Learn more about stoichiometry:

https://brainly.com/question/14267655

#SPJ1

Answer: 0.002 m³

Explanation:

We can use our unit conversions to find the volume in m³.

\(2L*\frac{1m^3}{1000L} =0.002m^3\)

Explanation:

The actual formula for volume for a cube is the length multiplied by the width and then multiplied by the height. Since all three measurements are the same, the formula results in the measurement of one side cubed. For the example, 5^3 is 125 cm^3. Multiply the volume by the known density, which is the mass per volume.

Answer:

266 liters Carbon iv oxide will be formed

Explanation:

The first thing we need to do here is to calculate the number of moles of oxygen reacted.

This can be calculated using the ideal gas equation;

Mathematically;

PV = nRT

From the question;

P = pressure = 10.5 atm

V = volume = 400 liters

n = number of moles = ?

T = temperature = 125 + 273 = 398K

R = molar gas constant = 0.0821 L•atm•K^-1•mol^-1

Substituting these values, we have ;

n = PV/RT

n = (10.25 * 400)/(398 * 0.0821) = 125 moles

From the question;

15 moles oxygen gave 10 moles CO2

125 moles oxygen will give x moles CO2

x = (125 * 10)/15 = 83 moles

Now, we want to know the volume of CO2, present in 83 moles using the given reaction conditions.

Mathematically;

PV = nRT

V = nRT/P

= (83 * 0.0821 * 398)/10.25 = 265.65 which is approximately 266 Liters

Answer:D

Explanation:

The Terrestrial Planets. From top: Mercury, Venus, Earth and Mars. The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth's terra firma. The terrestrial planets are the four innermost planets in the solar system.

Answer:

protons

Explanation:

have a positive charge

Answer:

Protons!

Explanation:

Protons are positve! Protons start with P, and Positive starts with P. This is a very handy trick!

There are five molecules of the water of crystallization.

Mass of hydrated copper(II) sulfate CuSO4 · xH2O = 0.755 g

Mass of anhydrous copper(II) sulfate CuSO4 = 0.483 g

Molar mass of hydrated copper(II) sulfate CuSO4 · xH2O = (160 + 18x) g/mol

Molar mass of anhydrous copper(II) sulfate CuSO4 =160 g/mol

Number of moles of hydrated copper(II) sulfate CuSO4 · xH2O = Number of moles of anhydrous copper(II) sulfate CuSO4

Therefore;

0.755 g/(160 + 18x) g/mol  = 0.483 g/160 g/mol

0.755 * 160 = 0.483 (160 + 18x)

120.8 = 77.28 * 8.694x

120.8 - 77.28 = 8.694x

x = (120.8 - 77.28)/8.694

x = 5

The formula of the hydrated salt is CuSO4 · 5H2O.

Learn more; https://brainly.com/question/14252791

Magnesium metal reacts with oxygen in the air to form a brittle white substance. The chemical name of this substance is MgO ( magnesium oxide)

What is a chemical reaction?

        2Mg(s) +O₂ (g) → 2MgO(s) + energy

Learn more metal oxides at https://brainly.in/question/314901

#SPJ4

Answer:

Hey there!

The volume rose by 5 ml, and that means the stone has a volume of 5 ml. Thus, the stone has a density of 25/5, or 5 g/cm^3.

Let  me know if this helps :)

Answer: —The processes of seafloor spreading, rift valley formation, and subduction (where heavier tectonic plates sink beneath lighter ones) were not well-established until the 1960s. These processes were the main geologic forces behind what Wegener recognized as continental drift.

Explanation:

Answer:

B

Explanation:

You prioritize the bromo group and then name the alkyl substituents accordingly (and also in the correct alphabetical order)

B. 1-bromo-2-ethyl-3-methylbenzene is the aromatic hydrocarbon

CH3 CH2CH3Br.

Traditionally, benzene-like substances have been called aromatic hydrocarbons due to the fact that they had unique aromas. Today, aromatic compounds include any that incorporate a benzene ring or have the residences we accomplice with this group of compounds.

Aromatic compounds, additionally known as "mono- and polycyclic aromatic hydrocarbons", are natural compounds containing one or extra fragrant earrings. The discern member is benzene. Heteroarenes are carefully related, considering the fact that as a minimum one carbon atom of CH organization is changed through one of the heteroatoms oxygen, nitrogen, or sulfur.

Learn more about aromatic hydrocarbon here https://brainly.com/question/22599756

#SPJ2