Question 2

Use the balanced chemical reaction below to answer the question.
200 + O2 + 2CO2
What is the ratio of moles of oxygen used to moles of carbon dioxide
produced?
O 2 mol O2: 2 mol CO2
O 1 mol O2: 1 mol CO2
O 2 mol O2: 1 mol CO2
O 1 mol O2:2 mol CO2

Answer:

After discovering the electron in 1897, J J Thomson proposed that the atom looked like a plum pudding . To explain the two types of static electricity, he suggested that the atom consisted of positive 'dough' with a lot of negative electrons stuck in it.

Answer:

10 moles of potassium Chlorate are required to produce 15 mole of oxygen

Explanation:

The balanced chemical equation is

2KClO3(s)→2KCl(s)+3O2(g)

2 moles of potassium Chlorate produce 3 moles of oxygen

Number of moles of potassium Chlorate required to produce 1 mole of oxygen [tex]= \frac{2}{3}[/tex]

Number of moles of potassium Chlorate required to produce 15 mole of oxygen

[tex]= \frac{2}{3} * 15\\= 10[/tex]

10 moles of potassium Chlorate are required to produce 15 mole of oxygen

Answer:

C)Electrons

Explanation:

Hope this helped!!!

Answer:

a) the atomic number is 15

b) the mass number is 15+16 = 31

c) element is phosphorus

d)Group 15 period 3

Answer:

2Co + 3F2 --> 2CoF3

Explanation:

When balancing an equation we need to ensure that the products used equal the reactants produced. Hence to balance the equation we need 3 F2 molecules so we have 6F atoms in total. and since 1 Co molecule bonds to 3 F molecules. We are gonna need to 2 Co molecules.

Answer:

please where are the rest of the questions you want to ask

Answer: A

Explanation:

Answer:

2.75M

Explanation:

Concentration(M)= mol/volume

0.0688mol/0.250L

=0.2752M

Answer:

Coefficients

Answer: 4.1 Acidic

Explanation:

pH = -log(H+)

     = -log (7.94x10^-5)

     = 4.10017949757

     = 4.1

any pH under 7 is acidic

Answer:B is right

Explanation: Al loses electrons and is oxidised, Au gains electron. And is reduced

To solve such this we must know the concept of half cell reaction. Therefore, the correct option is option B that is  Al(s) → A1³⁺(aq) + 3e and  Au(aq) + e [tex]\rightarrow[/tex]Au(s)

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Oxidation is loss of electrons and reduction is gain of electrons. The electron transfer from oxidant to reductant. Al loses electrons and is oxidized, Au gains electron. And is reduced.

Therefore, the correct option is option B that is  Al(s) → A1³⁺(aq) + 3e and Au(aq) + e [tex]\rightarrow[/tex]Au(s)

Learn more about the chemical reactions, here:

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1. stored energy

2. by wind

3. sound energy

4. petals

5. 1 parent

hope this helped <3

Answer:

263

Explanation:

Answer:

50mL

Explanation:

Using Boyle's law equation as follows:

P1V1 = P2V2

Where;

P1 = initial pressure (torr.)

P2 = final pressure (torr.)

V1 = initial volume (mL)

V2 = final volume (mL)

According to the information provided in the question,

V1 = 25.0mL

V2 = ?

P1 = 760 torr.

P2 = 380 torr.

Using P1V1 = P2V2

V2 = P1V1//P2

V2 = (760 × 25) ÷ 380

V2 = 19000 ÷ 380

V2 = 50mL

The accurate description of a geocentric solar system is the earth as a reference point.

The solar system refers to the arrangement of the sun and the planets. The description of the solar system in which the earth constitutes the center or reference point is called the geocentric model.

An alternative and more accurate model devised by Copernicus is the heliocentric model in which the sun lies at the center of the solar system.

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Answer:

d=5857,83g/m3 or 5,86kg/m3.

Explanation:

sorry if its wrong

Answer:

Uhh i'm not sure if this can help but natural resources?? SO SORRY IF IT DOESN'T HELP!

Answer:

Strong Acids

Explanation:

Answer:

Climate

Explanation:

Answer:

True

Explanation:

Answer:

Option D

Explanation:

Molarity (M) of any solution is equal to the number of moles (n)of solute in it divided by total volume of solution (V)

Mathematically, it can be represented as

[tex]M = \frac{n}{V}[/tex]

Substituting the given values, we get-

[tex]M = \frac{10}{5} = 2[/tex]

Hence, option D is correct

Answer:

yes this is true

Explanation:

Answer:

[tex]c=0.309\ J/g^{\circ} C[/tex]

Explanation:

The increase in heat, Q = 58.1 J

Mass, m = 89.4 g

The temperature increases from 23.4°C to 25.5°C. We need to find the specific heat of an unknown metal.

We know that the increase in heat is given by :

[tex]Q=mc\Delta T\\\\c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{58.1}{89.4\times (25.5-23.4)}\\\\c=0.309\ J/g^{\circ} C[/tex]

So, the specific heat of an unknown metal is equal to [tex]0.309\ J/g^{\circ} C[/tex].

Answer:

amphibians

Explanation:

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Answer:

Heterogeneous mixture.

(The composition is not uniform.)

Answer:

A. Is the Internal energy of matter

Hope this helps!

Answer:

those have symbols for their Latin or Greek name

Explanation:

hope it helps

Answer:

Na number of 11

Explanation:

Pb no. 82

Au no. 79

Cu no. 29

Hg no. 80

Answer:

Anthocyanins are used in organic solar cells because of their strong light harvesting, and their ability to convert this light energy into electrical energy.

Explanation:

Solar panels plug you into the sun by absorbing solar energy with photovoltaic (PV) cells. When hit with sunlight, they generate electricity which then flows into a device called an inverter which converts the electricity into a form (120 volts, 60Hz) for household use.

Answer:

5.2 multiple by 32.5

Ur answer divide by 15.9

169 divided by 15.9

ANSWER is 10.6