Which is a fossil fuel?
O A. Coal
O B. Biomass
O C. Geothermal
O D. Nuclear

Answer:

The maximum amount of water vapor the air can hold at a given temperature is known as the Saturation Point, it is also identified as 100% relative humidity.

Answer:

Percent yield of silver obtained = 78.18% (Approx.)

Explanation:

Given:

Amount of copper = 50 gram

Amount of silver nitrate = 300 gram

Amount of silver = 149 gram

Find:

Percent yield of silver obtained

Computation:

Percentage of Silver in silver nitrate =  108[100/(108+14+48)]

Percentage of Silver in silver nitrate = 108/[100/170]

Percentage of Silver in silver nitrate = 63.53% (Approx.)

Amount of Silver produced = [63.53%][300]

Amount of Silver produced = 190.59 gram

Percent yield of silver obtained = [Amount of silver / Amount of silver produced]100

Percent yield of silver obtained = [149/190.59]100

Percent yield of silver obtained = 78.18% (Approx.)

Answer:

223.08 K

Explanation:

First we convert 173.0 °C to K:

With the absolute temperature we can use Charles' law to solve this problem:

Where in this case:

We input the data:

And solve for T₂:

Answer: water

For many centuries, it was considered that there were only three states of matter: solid, liquid and gas (the three that are present and stable in our world). And water is the substance that best represents them, because it is the only one that exists naturally in the three states.

Explanation: Matter can exist in one of three main states: solid, liquid, or gas.

Solid matter is composed of tightly packed particles. ...

Liquid matter is made of more loosely packed particles. ...

Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume.

Answer:

Water is the only common substance that is naturally found as a solid, liquid or gas. Solids, liquids and gases are known as states of matter.

Feel free to mark it as brainliest :D

Ignore this part unless you want to understand out of your syllabus:

However, if you take into account the fifth state of matter, Bose-Einstein Condensate, which has been recently discovered, there is no substance as such.

According to Le cha telier's principle when we increase the pressure of a equilibrium reaction the reaction shift to the side where few moles of gas present.

Your reaction (Notice - I guess the reaction you written is wrong, but still I'm solving with your given prediction)

3NaI (g) + H2 (g) = 2NaHI (g)

Where access of sodium iodide is reacting with Hydrogen gas to form NaHI molecule.

Number of moles of gas on reaction side - 3+2 = 5 moles

Number of moles of gas on product side - 2 moles

Conclusion- the reaction will shift to the right of the reaction

According to Le cha telier's principle when we increase the pressure of a equilibrium reaction the reaction shift to the side where few moles of gas present.

Your reaction (Notice - I guess the reaction you written is wrong, but still I'm solving with your given prediction)

3NaI (g) + H2 (g) = 2NaHI (g)

Where access of sodium iodide is reacting with Hydrogen gas to form NaHI molecule.

Number of moles of gas on reaction side - 3+2 = 5 moles

Number of moles of gas on product side - 2 moles

Conclusion- the reaction will shift to the right of the reaction

Answer:

a. 686g of H2SO4 are present.

b. 3.321L would be made

Explanation:

a. Molarity, M, is an unit of concentration defined as the ratio between moles of solute (In this case H2SO4) and liters of solution. The moles of H2SO4 in 3.5L of 2.0M H2SO4 are:

3.5L * (2.0mol H2SO4 / L) = 7.0 moles H2SO4

The mass is obtained using molar mass of H2SO4 -98g/mol-:

7.0 moles H2SO4 * (98g / mol) = 686g of H2SO4 are present

b. The density of H2SO4 is 1.83g/mL. The volume of 2.0M H2SO4 per liter of solution is:

2.0mol H2SO4 / L * (98g / mol) * (1mL / 1.83g) = 107mL of H2SO4 are present per liter of solution. In 3L there are:

3L  (107mL / L) = 321mL = 0.321L of H2SO4 must be added to 3L of water to produce 2.0M H2SO4. The total volume is:

3L + 0.321L = 3.321L would be made

Answer:

when rutherford performed his experiment, only 1 in 20,000 alpha particles bounced straight back or were deflected greatly. the rest went straight through the gold foil. e) based on this evidence, what is in atom's center? positively charged particles.

Explanation:

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{3.01 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{3.01}{6.02} \\ = 0.5[/tex]

We have the final answer as

Hope this helps you

Answer:

1.53 atm

Explanation:

From the question given above, the following data were obtained:

Volume = constant

Initial pressure (P₁) = stp = 1 atm

Initial temperature (T₁) = 273 K

Final temperature (T₂) = 144 °C = 144 °C + 273 = 417 K

Final pressure (P₂) =?

Since the volume is constant, the final pressure can be obtained as follow:

P₁ / T₁ = P₂ / T₂

1 / 273 = P₂ / 417

Cross multiply

273 × P₂ = 417

Divide both side by 273

P₂ = 417 / 273

P₂ = 1.53 atm

Therefore, the final pressure (i.e the pressure inside the hot water bottle) is 1.53 atm.

It would create 12.1 g of ammonia (NH3).

The amount of hydrogen that is reacted in this reaction is:

(10 g N2)[tex](\frac{3.0gH2}{14.0gN2}) =[/tex] 2 g H2

According to the Law of Conservation of Mass, the mass of ammonia produced is  the combination of hydrogen and nitrogen reacted or:

2.1g + 10.0g = 12.1 g of NH3

Answer:

Lead

that can be found in the periodic table of elements

Explanation:

Answer:

Answer C

Explanation:

Got it off of q**zlet ;)

Answer

Its C confirmed

Explanation:

Just did the test

Answer:

for number of neutrons it is mass number take away the atomic number

number of electron is the same as number of proton unless there is a charge like +2 it will have 2 less electron than the proton (atomic number ) number.

number of proton is the atomic number

Explanation:

hope it make sense:)

Answer:

D. The number or protons

Explanation:

It doesn't matter how many electrons or neutrons an atom has; the element always is defined by its number of protons.

Answer:

True.

Explanation:

Yes, analyses of enzymes found in the blood are used as indicators of tissue damage in the heart, liver, muscle etc has occurred. This leakage of enzymes into the bloodstream tells us whether the tissue is damaged or not. Lactate dehydrogenase is a type of enzyme which is used as indicator which is responsible for the interconverts lactate and pyruvate. The concentration of this enzyme in the blood tells us about tissue damage.

Answer:

a. True

Explanation:

The co enzyme used for this reaction is NADH+, here H+ acts as co substrate.

This is required to find the tissue damage that has occurred in our body which resulted in leakage of cellular enzymes into the bloodstream.

This coenzyme is used for conversion of lactose dehydrogenase.

Nitric acid and potassium nitrite reacted together potassium nitrate and nitrous acid forms. The net ionic equation for the reaction is given below:

[tex]\rm K^{+} (aq)+ NO_{3} ^{-} (aq)\rightarrow KNO_{3}(s)[/tex]

A balanced reaction represents all the reactants and products in perfect stoichiometry. Thus, each element have to be equal in number on both side.

A balanced ionic equation represents all the ions participating in a reaction and with their charges balanced on both side and state of the reaction is given in brackets. Net ionic equation represents the formation of a solid precipitate.

The complete ionic equation of reaction of one mole of potassium nitrite with one mole of nitric acid is given below:

[tex]\rm K^{+} + NO_{2}^{-}(aq) + H^{+} (aq) +NO_{3}^{-}(aq) \rightarrow H^{+} (aq) + NO_{2}^{-}(aq) + KNO_{3} (s)[/tex]

Cancelling the aqueous ions from both sides we get the net ionic equation representing the formation of solid potassium nitrate as shown here:

[tex]\rm K^{+} (aq)+ NO_{3} ^{-} (aq)\rightarrow KNO_{3}(s)[/tex]

To find more on ionic equations, refer here:

https://brainly.com/question/15467502

#SPJ5

Answer:

Explanation:

PCl3, the octet for both phosphorus and Chlorine atoms is complete. Therefore, it follows the octet rule.

Answer: A more electronegative atom will have more attraction to the electrons in a chemical bond.

Explanation:

An atom that is able to attract electrons or shared pair of electrons more towards itself is called an electronegative atom.

For example, fluorine is the most electronegative atom.

Due to its high electronegativity it is able to attract an electropositive atom like H towards itself. As a result, both fluorine and hydrogen will acquire stability by sharing of electrons.

Thus, we can conclude that a more electronegative atom will have more attraction to the electrons in a chemical bond.

Answer:

The correct answer is -

1. Malaysia - Kuala Lumpur 3.1390° N, 101.6869° E

2. Indonesia - Jakarta - 6.2088° S, 106.8456° E

3. Vietnam - Hanoi - 21.0278° N, 105.8342° E

4. Taiwan - Taipei  -25.0330° N, 121.5654° E

5. China - Beijing - 39.9042° N, 116.4074° E

6. Palau - Ngerulmud  - 7.5004° N, 134.6243° E

7. Japan - Tokyo - 35.6762° N, 139.6503° E

Explanation:

The Philippines does not share its land borders with any country, however, the Philippines claims that they share their boundary with Malaysia. Other than land borders they also share maritime borders with Palau, Taiwan, Vietnam,  China, Indonesia, and Japan.

All these neighboring countries have capitals that are as follows with their coordinates on the atlas-

1. Malaysia - Kuala Lumpur 3.1390° N, 101.6869° E

2. Indonesia - Jakarta - 6.2088° S, 106.8456° E

3. Vietnam - Hanoi - 21.0278° N, 105.8342° E

4. Taiwan - Taipei  -25.0330° N, 121.5654° E

5. China - Beijing - 39.9042° N, 116.4074° E

6. Palau - Ngerulmud  - 7.5004° N, 134.6243° E

7. Japan - Tokyo - 35.6762° N, 139.6503° E

Answer:

shorter waves equal more power

Explanation:

"higher frequency and shorter wavelengths are one in the same thing. the higher frequency - higher energy results from Planck's realization of the quantization of light and resulting E=hf equation"

I believe the answer for this is:

C. Visible Light Rays

I hope this helps! :D

Answer:

C, visible light rays :)

Explanation:

Hope i could help

Answer:

How to Formulate an Effective Research Hypothesis

State the problem that you are trying to solve. Make sure that the hypothesis clearly defines the topic and the focus of the experiment.

Try to write the hypothesis as an if-then statement. ...

Define the variables.

Explanation:

Answer:

XeF4                  True

[PdCl4]2−           True

naphthalene      True

Furan                  False

C4H4O               False  

Explanation:

From the given information:

Only XeF4;  [PdCl4]2−;  naphthalene are true. This is because their molecules contain -nC₂ axis which is perpendicular to the Cn axis. The image attached below shows the structural formula of each compound, there below, we can see that Furan only possesses one C₂ axis but not -nC₂ ⊥ C₂.

Answer:

1.00 m^3

Explanation:

Boyles law says that PV = constant, or P1V1=P2V2, while temperature remains constant.

0.25 m^3 *4 atm = V* 1 atm

V = 0.25 m^3 / (1/4)

= 1 m^3

Answer:

170.43g P2O3

Explanation:

First write and balance the equation:

P2O3 + 4NaOH → 2Na2HPO3 + H2O

NaOH=39.997 g/mol  P2O3= 109.945 g/mol

248g NaOH x 1 mol NaOH/39.997g NaOH x 1 mol P2O3/4 mol NaOH x

109.945g P2O3/ 1 mol P2O3 = 170.43g P2O3

Answer: D it’s is 2.0 s

i think..

Explanation:

Answer:

6 moles

Explanation:

because if conducting a moles ratio for oxygen and water it is 1:2 so the moles would calculate up to 6 moles after cross multiplication.

Answer:

148.85 g or 0.14885 kg

Explanation:

Applying,

Heat lost by the metal cube = heat gained by the water.

c'm'(t₁-t₃) = cm(t₃-t₂).................. Equation 1

Where c' = specific heat capacity of the metal, m' = mass of the metal, c = specific heat capacity of water, m = mass of water, t₁ = Initial temperature of the metal, t₂ = Initial temperature of water, t₃ = equilibrium temperature.

make m the subject of the equation

m = c'm'(t₁-t₃)/c(t₃-t₂).............. Equation 2

From the questions,

Given: c' = 0.55 J/g.°C, m' = 55 g, t₁ = 85°C, t₂ = 20°C, t₃ = 23°C

Constant: c = 4.2 J/g.°C

Substitute these values into equation 2

m = 0.55×55×(85-23)/(4.2×[23-20])

m = 1875.5/12.6

m = 148.85 g.

m = 0.14885 kg

Answer:

6

Explanation:i dont know