8.5 x 10^-2 standard form

Mass of H₂O produced = 7.488 g

Given

40.8 g of C₆H₆O₃

42.8% yield

Required

mass of H₂O

Solution

Reaction

C₆H₆O₃+6O₂=>6CO₂+3H₂O

mol of C₆H₆O₃(MW = 126 g/mol) :

= mass : MW

= 40.8 g : 126 g/mol

= 0.324

Mol H₂O :

= 3/1 x mol C₆H₆O₃

= 3/1 x 0.324

= 0.972

Mass H₂O(theoretical) :

= 0.972 x 18 g/mol

= 17.496 g

%yield = (actual/theoretical) x 100%

0.428 = actual / 17.496

actual = 7.488 g

60 g O₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[RxN - Balanced]   CH₄ + 2O₂ → CO₂ + 2H₂O

[Given]   2 mol H₂O

[Solve]   x g O₂

Step 2: Identify Conversions

[RxN] 2 mol H₂O → 2 mol O₂

[PT] Molar Mass of O - 16.00 g/mol

Molar Mass of O₂ - 2(16.00) = 32.00 g/mol

Step 3: Stoichiometry

Step 4: Check

Follow sig fig rules and round. We are given 1 sig fig.

64.00 g O₂ ≈ 60 g O₂

Mass of O₂= 64 g

Given

Reaction

CH₄ + 20₂ → CO₂ + 2H₂O

2 moles of H₂O

Required

Mass of O₂

Solution

In a chemical equation, the reaction coefficient shows the mole ratio of the compounds involved in the reaction, reactants or products

From the equation, mol ratio of H₂O  : O₂ = 1 : 1, so moles O₂ :

= 1/1 x moles H₂O

= 1/1 x 2

= 2 moles

Mass of O₂ :

= mol x MW

= 2 x 32 g/mol

= 64 g

Answer:

b cation

Explanation:

that plus means it is positively charged. ions that are positively charged are cations. negatively charged ions are called anions

Answer:

a) C4H6+2H2=C4H10

b) 4Na+CF4=4NaF+C

c) 2Na+2NH3=2NaNH2+H2

d) 2H202=2H2O+O2

Explanation:

Try and make sure there is the same number of reactants as products

Answer:

20

Explanation:

The acceleration in this problem is 20

Acceleration is defined as the rate of change of velocity with time. When a force is exerted on a body and the net force is greater than zero, it begins to accelerate.

Answer:

C.) Lactobacillus

Explanation:

Is a prokaryote with a simple rod shaped structure. Similar to other prokaryotic bacterium of its shape it has a cell wall, and capsule.

Answer:

[tex]\dfrac{1}{2}[/tex]

Explanation:

Let assume that X and Y are the reactants of a given reaction.

Then the rate can be expressed as:

rate = k[X][Y]

Suppose the concentration of X is quadrupled and the rate is doubled.

Then. we have;

[tex]2 \times rate = k[4X]^{\dfrac{1}{2}} [Y][/tex]

So, the initial rate of the concentration will be [tex]\dfrac{1}{2}[/tex] when the concentration of the reactant is increased by a factor of two.

Answer:

true

Explanation:

becaus it chang climate

Answer:

The flow of energy from one trophic level to another creates the energy cycle. In this cycle, energy is neither created nor destroyed. Energy flows from one trophic level to another. The primary source of energy is solar energy. Plants uses solar energy to produce their food by the process of photosynthesis. The food produced by the plants are consumed by the primary consumers. The plan eating animals consume food produced by the plants and they form the second trophic level. In the third tropic level the carnivores get the energy by eating the herbivores. After the death of the carnivores, decomposers act on them and the nutrients are ultimately returned to the soil.

733 g CO₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

[RxN - Balanced]   2C₃H₇OH + 9O₂ → 6CO₂ + 8H₂O

[Given]   5.55 mol C₃H₇OH

Step 2: Identify Conversions

[RxN] 2 mol C₃H₇OH → 6 CO₂

Molar Mass of C - 12.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of CO₂ - 12.01 + 2(16.00) = 44.01 g/mol

Step 3: Stoichiometry

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

732.767 g CO₂ ≈ 733 g CO₂

Answer:

One lone pair

Explanation:

If we follow the valence bond approach of looking at chemical bonding, then we have to consider the electronic configuration of Fe^3+ which is; [Ar] 3d5.

This means that we have three electrons available to combine with three fluorine atoms leaving one lone pair to form FeF3.

Hence, FeF3 has one lone pair of electrons.

Answer:

1-Octanol

Explanation:

Count the amount of carbon atoms in the chain. Nomenclature includes the position of the largest functional group position in the molecule.

In this case the carbon chain has 8 carbon atoms and one hydroxide functional group (OH)  

1 (hydroxide is listed first in the carbon chain) - Oct(8 carbons) + anol (Alkanol hydrocarbon with a hydroxide group, use anol suffix )

=  1 - Octanol

Answer:

25n

Explanation:

Answer:no

Explanation:no

Metals are hard. However, they can be cut into pieces. Gold can be cut into small pieces and can also be converted to sheets or thin wires.

What are metals?

Metals are electropositive elements. They are hard materials and are good conductors. Metals conduct both thermally and electrically they are optically active materials.

Metals can be flattened to sheets by the property called malleability. Similarly metals can be changed to thin wires. This ability is called ductility. They also exhibit luster and crystallinity.

Gold is a transition metal. Gold can be cut into small pieces mechanically. It can be flattened or made thin wires also. Therefore, we can divide metallic gold as long as its bar is there.

To find more on metals, refer here:

https://brainly.com/question/28650063

#SPJ2

The concentration of solution : 0.2 M

Given

5.6 g Potassium hydroxide(KOH)

500 ml of solution = 0.5 L

Required

The concentration

Solution

Molarity shows the number of moles of solute in every 1 liter of solution or mmol in each ml of solution

MW KOH = 39+16+1=56 g/mol

mol solute(KOH) :

= mass : MW KOH

= 5.6 : 56 g/mol

= 0.1

Molarity :

= 0.1 : 0.5

= 0.2 M

divide 5 hours 20 mins by 4,000

and ur answer is

320 mins/4000km

so

0.08

hope this helps

sorry if its wrong

Answer:

422.1 grams

Explanation:

First find the atomic mass of each element on your periodic table.

Pb = 207.2 amu

O = 16 amu

H = 1 amu

They are two oxygen and two hydrogen atoms. Now add the atomic mass of all the elements together

207.2 + 16(2) + 1(2) = 241.2 grams

Now multiply 241.2 with the 1.75 moles

241.2 * 1.75 = 422.1

So the final answer is 422.1 grams.

Hope it helped!

Answer:

Adding water to an acid or base will change its pH. Water is mostly water molecules so adding water to an acid or base reduces the concentration of ions in the solution.  When an acidic solution is diluted with water the concentration of H+ ions decreases and the pH of the solution increases towards 7.  To make the pH change by 1, a tenfold dilution is required (eg adding 9 cm3 of water to 1 cm3 acid). The acid is becoming less acidic. Similarly, when an alkali is diluted with water the concentration of OH- ions decreases. This  causes the pH of the alkali to fall towards 7, making the solution less alkaline as more water is added.

Explanation:

Answer:

That is NOT true!

Explanation:

No matter how little or big amount of waste you add, it is still pollution, and it adds to the big amount that is already there.

Answer:

4 atoms of oxygen.

Explanation:

The given equation is :

[tex]4Fe+3O_2\rightarrow 2Fe_2O_3[/tex]

Here Fe and O₂ are reactants and Fe₂O₃ is a product. It is a balanced chemical reaction in which the number of atoms on LHS are equal to number of atoms on RHS.

4 atoms of iron react with 3 atoms of oxygen to form iron oxide. Hence, there are 4 atoms of reactants in this equation.

Answer:

A) Oscillate

B) Liquid

C) Loosely

That is, "They can oscillate about a fixed point. Particles in a liquid are still close together but are arranged loosely (not in a pattern)

Explanation:

The above speaks to the various states that matter can be in. They are Gaseous, Liquid, and Solid.

The state described above is the liquid state. Recall that all matter are made up of microscopic particles. These particles when viewed under a microscope are observed to be in a state of continuous motion.

The degree of motion and arrangement is determined by the temprature of the substance. The higher the temperature, the faster and more lose the particles become.

Water for instance would in a liquid state, have its particles oscillate freely about each other giving it the ability to take the shape of the container in which it is put. Its particles are not rigidly fixed together at this point and can slide past each other easily.

In a solid-state (that is ice) the particles become tightly packed and there is less oscillation. Whilst in a gaseous state (vapor, that is) the particles o or molecules are very far apart.

Cheers!

Answer: how the air pressure is expect to change tonight AND the temp. for the previous week

Explanation:

a p e x

Answer:

last quarter moon/half moon

Explanation:

Answer: The difference between granites and basalts is in silica content and their rates of cooling. A basalt is about 53% SiO2, whereas granite is 73%. Intrusive, slowly cooled inside the crust.

Explanation: I hope that helped!