If I add wheels to a cart to move it, will it have more or less friction than trying to
move the cart without wheels?

Answer:

C2H5OH +O2(g)_CO2(g)+H2O(g) (unbalanced)

C2H5OH +3O2(g)_2CO2(g)+3H2O(balanced)

Answer:

the second one

Explanation:

I believe its thhe second one because isnt it when the earth is closest to the sun its winter.

i know its seems weird but that's what I learned

There are reasons for alignment.  The second diagram represents the alignment of the Earth, Moon and Sun during a spring tide.

Spring tides is known to often take place when the Earth, the Sun, and the Moon are said to be in one line.

This brings about a rise in the gravitational pull on the oceans. Few times,  the Sun and Moon are known to be opposite sides of the Earth.

When you see the second diagram, you will see that they are on the same side and line.

Learn more about alignment of the Earth moon from

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Answer:

Explanation:

C defo

Answer:

hello your question is incomplete attached below is missing part

answer : Pauli's exclusion principle

Explanation:

The principle that was disobeyed is Pauli's exclusion principle this is because the  Pauli's exclusion principle states that no two electrons can have the same set of quantum number.

In Box A the two electrons , have the same spin which means  they have the same quantum number ( disobeys Pauli's exclusion principle )

Answer:

B. hydrogen storage

Explanation:

Answer: B hydrogen storage

Explanation:

correct on edge 2020

Answer:

C

Explanation:

The Law of Conservation of energy is that energy can be transformed from one form to another, but can be neither created or destroyed.

Explanation:

same✊ raaaate meee please

Answer:

C3H6O

Explanation:

The percentage composition of the elements in the compound are given as follows:

62.1 % carbon = 62.1g of C

10.5 % hydrogen = 10.5g of H

27.6 % oxygen = 27.6g of O

Next, we convert each mass to mole by dividing by their molar/atomic mass

C = 62.1/12 = 5.175mol

H = 10.5/1 = 10.5mol

O = 27.6/16 = 1.725mol

Next, we divide each mole value by the smallest mole value (1.725)

C = 5.175mol ÷ 1.725 = 3

H = 10.5mol ÷ 1.725 = 6.086

O = 1.725mol ÷ 1.725 = 1

The empirical ratio approximately of C:H:O is 3:6:1, hence, the empirical formula is C3H6O

Answer:

Explained below.

Explanation:

The difference between the two of them will be considered from their electrostatic potential maps.

First of all the major difference is that ammonia molecule(NH3) has a lone lone pair of electron on the N atom.

Due to the this lone pair of electron on the N - atom of ammonia, it's bond angle will be slightly lesser than that of ammonium ion.

Therefore, In the electrostatic potential map of NH3, the charge distribution will not be symmetrical for the fact that there is electron rich N atom and so the N atom will be more red than the 3 hydrogen atoms (H atoms).

Whereas, the electrostatic potential map of NH4+ (ammonium ion) will be symmetrical due to the even/symmetrical distribution of all the 4 hydrogen atoms surrounding the central Nitrogen atom.

Also, the Nitrogen atom here in ammonium ion will have a lower electron density than the Nitrogen atom that's present in ammonia molecule due to the bonding existing between the lone pair electron and the Hydrogen atom

Answer:

A consumer

Explanation:

Answer:

primary consumers

Explanation:

Answer:

0.1023 moles

Explanation:

We have this reaction

Na2HPO4 → 2Na+ + NPO4-

1 mole gives us 3 ions

Na+ has 2 ions to it

NPO4 has 1 ion

2 + 1 = 3

We multiply 3 with the number of moles to get the answer to this question

3 x 0.0341

= 0.1023 moles

So we conclude that total moles released when dissolved in water is equal to 0.1023

Answer:

A

Explanation:

if the earth slows down then that will give more time to the sun meaning days/nights will be longer

Answer:

44 grams of CO₂ will be formed.

Explanation:

The balanced reaction is:

C + O₂ → CO₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

Being the molar mass of each compound:

By stoichiometry the following mass quantities participate in the reaction:

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

If 12 grams of C react, by stoichiometry 32 grams of O₂ react. But you have 40 grams of O₂. Since more mass of O₂ is available than is necessary to react with 12 grams of C, carbon C is the limiting reagent.

Then by stoichiometry of the reaction, you can see that 12 grams of C form 44 grams of CO₂.

44 grams of CO₂ will be formed.

Answer:

A. Energy is absorbed because the product has more energy than the reactants have.

Here the energy of both reactants is combined together and not released.

Answer:

Volume of the bar=10 X 4 X 5=200 cm^3

Mass=200 X 19.3=3,860 grams

Mass=3.86 Kilograms

Explanation:

Answer:

sir/ma'am, i know i'm a NOOB at this kind of stuff but i believe it's oxygen.

Explanation:

i can't really remember the answer since it's been a week or so that i done this problem, it's between nitrogen and oxygen, though, i believe it's oxygen.

if ya don't believe me or trust me, then here's the link to help ya:

https://socratic.org/questions/what-elements-would-have-similar-properties-to-sulfur#628367

Answer:

Atomic and ionic size –

As the atomic number increases, the atomic size increases and effective nuclear charge also increases which attracts the outermost shell more effectively. So, as we move left to right means from actinium to lawrencium in the actinide series, there is gradual decrease in the the atomic or ionic radii with increase in atomic number. This steady decrease I atomic size is called actinide contraction. The actinide contraction is analog to the lanthanide contraction.

Cause of Actinide contraction –

The main reason of the actinide contraction is the imperfect shielding of the one 5f-electron by another 5f- electron in the same shell. Due to poor shielding effect of the 5f electrons, effective nuclear charge increases which causes the contraction in atomic size. When one electron is added to the 5f-orbital every time means proton keeps on increasing due to which the nuclear charge increases irregularly which causes the poor shielding effect.

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Answer:

11.25 moles of O₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

C₃H₈ + 5O₂ —> 3CO₂ + 4H₂O

From the balanced equation above,

1 mole of C₃H₈ reacted with 5 moles of O₂.

Finally, we shall determine the number of mole of O₂ needed to react with 2.25 moles of C₃H₈. This can be obtained as follow:

From the balanced equation above,

1 mole of C₃H₈ reacted with 5 moles of O₂.

Therefore, 2.25 moles of C₃H₈ will react with = 2.25 × 5 = 11.25 moles of O₂.

Thus, 11.25 moles of O₂ is needed for the reaction.

Answer:

The limiting reagent is O₂ if 5.2 grams of oxygen was present. The theoretical yield is 17.25g of Fe₂O₃

Explanation:

The reaction is:

4Fe + 3O₂  →  2Fe₂O₃

We convert the mass of each reactant to moles:

12.5 g . 1mol / 55.85g = 0.224 moles of Fe

5.2g . 1 mol/ 32g = 0.1625 moles of oxygen.

We analyse the stoichiometry.

4 moles of Fe react to 3 moles of O₂

Then 0.224 moles of Fe will react to (0.224 . 3)/4 = 0.1678 moles of O₂

I need 0.1678 moles of O₂ and I only have 0.1625. Oxygen is the limiting reactant.

Now we go to the products:

3 moles of O₂ can produce 2 moles of Iron (III) oxyde

Then, 0.1625 moles of O₂ may produce (0.1625 . 2)/3 = 0.108 moles of Fe₂O₃

We convert the moles to mass:

0.108 mol . 159.7g /1mol = 17.25 g

Answer:

None of the given options

Explanation:

Let's go case by case:

A. No matter the volume, the concentration of Fe(NO₃)₃ (and thus of [Fe³⁺] as well) is 0.050 M.

B. We can calculate the moles of Fe₂(SO₄)₃:

Given that there are two Fe⁺³ moles per Fe₂(SO₄)₃ mol, in the solution we have 0.032 moles of Fe⁺³. With that information in mind we can calculate [Fe⁺³]:

C. Analog to case A., the molar concentration of Fe⁺³ is 0.040 M.

D. Similar to cases A and C., [Fe⁺³] = 0.010 M.

Thus none of the given options would have [Fe⁺³] = 0.020 M.

Answer:

False

Explanation:

Disassociation of Dinitrogen tetraoxide is shown below -

N2O4(g) ⇌ 2NO2(g)

Nitrogen dioxide gas is deep red-orange in color. However, in presence of aerosols, this gas appears reddish-brown in color.

Hence the given statement is False

Answer:

maybe try 4.002602, good luck

Answer:

Chlorine

Explanation:

chlorine is the element that shows similar chemical properties as bromine because this element is in the same group in the periodic table show similar properties they belong to 17th group.

Answer:9.03*10^23

Explanation:

Answer:

In thin-layer chromatography, the retention factor (Rf) is used to compare and help identify compounds. The Rf value of a compound is equal to the distance traveled by the compound divided by the distance traveled by the solvent front (both measured from the origin).

Answer: B. 4 moles Fe and 3 moles CO2

Explanation:

write a balanced chemical reaction

that is FeO3 + 3 CO → 2 Fe + 3CO2

2 moles of Fe2O3 reacted with 3 x2=6 moles of Co to form Fe and CO2 therefore CO was in excess and Fe2O3 was limiting reagent.

use the mole ratio to determine the moles of each product.

that is the mole ratio 0f Fe2O3 : Fe is 1:2 therefore the moles of Fe = 2x2=4 moles

the mole ratio of Fe2CO3 : CO2 is 1: 3 therefore the moles of Co2 = 2 x3 = 6 moles

If 2 moles of Fe2O3 react with 9 moles of CO, moles of each product is formed will be 6 moles.

A standard scientific unit for measuring large quantities of very small entities such as atoms, molecules, etc, is referred to as mole.

According to the given scenario, the first one should create a chemical reaction that is balanced

FeO3 + 3 CO 2 Fe + 3CO2 is the formula.

Because 2 moles of Fe2O3 reacted with 3 x2=6 moles of Co to produce Fe and CO2, CO was in excess and Fe2O3 was the limiting reagent.

To calculate the moles of each product, use the mole ratio.

That is the Fe2O3 mole ratio: Because Fe is a 1:2 element, the mole of Fe is 2x2=4 moles.

Because the mole ratio of Fe2CO3 to CO2 is 1:3, the moles of Co2 are 2 x 3 = 6 moles.

Thus, If 2 moles of Fe2O3 react with 9 moles of CO, moles of each product is formed will be 6 moles.

For more details regarding moles, visit:

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Answer:

Maximum amount of NaCl that can be Dissolved in 100g of water at 90'C

Explanation:

In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C . So, at 80∘C , you will have an unsaturated solution if you dissolve less than 40 g of sodium chloride, and a saturated solution if you dissolve about 40 g of sodium chloride

Answer:

The maximum amount of NaCl that can be Dissolved in 100g of water at 90'C

Explanation:

In fact, you can expect to be able to dissolve no more than 40 g of sodium chloride per 100 g of water at 80∘C . So, at 80∘C, you will have an unsaturated solution if you dissolve less than 40 g of sodium chloride, and a saturated solution if you dissolve about 40 g of sodium chloride.

Answer:

hahahaa i can get the points

Explanation:

yes it is again LOL thanks