The ground below your feet moves at the rate at which... Look at the picture.

Answer:

Is there supposed to be a picture??

Explanation:

Dang that is messed up you have a EVIL teacher to do that to you

Displacement reactions

Answer:

The planet would stop

Good luck!

Answer:

Plants release more carbon dioxide into atmosphere than expected. ... Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration. Plants also release oxygen into the atmosphere through photosynthesishesis to capture carbon dioxide and then release half of it into the atmosphere through respiration. Plants also release oxygen into the atmosphere through photosynthesis.

Percentage is a ration of part to a whole. In our case, in perfect conditions, yield is theoretical and thusly considered larger, a whole. While actual yield is less because of imperfect conditions. The percentage is,

[tex](12.33\cdot 100)/14.5\approx85.03\%[/tex].

Hope this helps.

Answer: 85.03%

Explanation:

Percentage yield = (actual yield/ theoretical yield) x100

so: (12.33/ 14.50)x 100

= 85.0344827586

Answer:

hope this helps :)

Answer:

≈ 395,8 J/(kg * °C)

Explanation:

m = 44 g = 0,044 kg

[tex]t_{1}[/tex] = 22 °C

[tex]t_{2}[/tex] = 33,6 °C

Q = 202 J

The formula is: Q = c * m * ([tex]t_{2} - t_{1}[/tex])

c = [tex]\frac{Q}{m * (t_{2} - t_{1} )}[/tex]

Calculating:

c = 202 J / 0,044 kg * (33,6 °C - 22 °C) ≈ 395,8 J/(kg * °C)

Answer

Solid

liquid

Gas

Explanation:

Answer:

3.0 dm^3 of sulphur trioxide is formed

Explanation:

From Gay Lussac's law of combining volumes;

The equation is;

                                                  SO2(g) + 1/2O2(g) ------> SO3(g)

Reacting volumes                       1 vol          1/2 vol             1 vol

Initial volumes                           3.0 dm^3    2.0 dm^3       0.0 dm^3

Final volumes                            0.00 dm^3  1.5 dm^3        3.0 dm^3

Hence, 3.0 dm^3 of sulphur trioxide is formed.

Answer:

When dry ammonia is passed over heated sodium in absence of air, the product formed is sodium amide. - When dry ammonia is passed over heated sodium in absence of air, sodium amide is produced. - Sodium amide aka sodamide is mainly used as a strong base in organic chemistry.

Explanation:

Answer:

781×10¯² g of MgCl₂.

Explanation:

The balanced equation for the reaction is given below:

Mg + 2HCl —> MgCl₂ + H₂

Next, we shall determine the mass of HCl that reacted and the mass of MgCl₂ produced from the balanced equation. This is illustrated below:

Molar mass of HCl = 1 + 35.5

= 36.5 g/mol

Mass of HCl from the balanced equation = 2 × 36.5 = 73 g

Molar mass of MgCl₂ = 24 + (35.5×2)

= 24 + 71

= 95 g/mol

Mass of MgCl₂ from the balanced equation = 1 × 95 = 95 g

SUMMARY:

From the balanced equation above,

73 g of HCl reacted to produce 95 g of MgCl₂.

Finally, we shall determine the mass of MgCl₂ produced by the reaction of 6 g of HCl. This can be obtained as follow:

From the balanced equation above,

73 g of HCl reacted to produce 95 g of MgCl₂.

Therefore, 6 g of HCl will react to produce = (6 × 95)/73 = 781×10¯² g of MgCl₂.

Thus, 781×10¯² g of MgCl₂ were obtained from the reaction.

Answer and Explanation:

a. fluorine ⇒ atomic element

Fluorine (F) is a chemical element because it is a pure substance that cannot be decomposed into simpler substances.

b. N₂O ⇒ molecular compound

We can see that N₂O (nitrous oxide) is a molecule composed by two different atomic elements: nitrogen (N) and oxygen (O). Thus, it is a molecular compound.

c. silver ⇒ atomic element

Silver is a chemical element with the symbol Ag. It is a pure substance which cannot be decomposed into simpler substances.

d. K₂O ⇒ ionic compound

Potassium oxide (K₂O) is composed by a metallic element (potassium, K) and a non-metallic element (O). Thus, there is a difference in the electronegativity of the chemical elements, so the substance can dissociate into ions. In consequence, it is an ionic compound.

e. Fe₂O₃ ⇒ molecular compound (with ionic character)

Iron(III) oxide (Fe₂O₃) is composed by iron element (Fe), which is a metal, and oxygen element (O), which is a non-metal. Since it is a Metal- Non-Metal combination, it would be an ionic compound. The difference in electronegativity between Fe and O is not high (<2.0) in comparison with other ionic compounds, so Fe₂O₃ is considered as a polar covalent compound (it is between an ionic compound and a molecular compound).

Answer:

srry

Explanation:

Answer:

Scientific theories are the results of many experiments and observations.

Explanation:

Sooo BBBBBBBBB

Explanation:

mole=mass/molar mass

mass= mole×molar mass

m= 5.2×( 23+35.5)

m= 5.2×58.5

m= 304.2g

Explanation:

1 gram of AGNO3 is 169,87 g/mol

2.5 mole = 2.5×16987

= 42467

Answer:

Add 700mL of water.

Explanation:

The technique of separation known as the Sodium Dodecyl Sulfate Poly-Acrylamide Gel Electrophoresis in which its acronym is SDS- PAGE is a very important aspect of Chemistry and Biochemistry as the technique make use of molar mass when it work in seperating proteins.

From the question we have the following parameters or information:

Case 1=> 50% of methanol which is the same as saying 50mL in 100mL of water.

Case 2=> 0.1% Comasse Blue dye (dry powder) which is the same as saying 0.1g in 100mL of water.

Case 3=> 10% acetic acid is the same as saying 10mL in 100mL of water.

Adding the three together, we have ;

50mL in 100mL of water + 0.1g in 100mL of water + 10mL in 100mL of water.

The volume of water in the three = 100 mL + 100mL + 100mL = 300mL.

Therefore, there is need to add 700mL of water to make 1L.

That's 700mL of water + 300mL = 1000mL = 1L

Answer:

what is the energy rate? or how much energy do you have.

Explanation:

Answer:

178.56 cm3

Explanation:

V1/T1=V2/T2

V2=V1T1/T2

V1 (volume) is 200 cm3

T1 (temperature) is 60°C but convert into Kelvin

T2 (temperature) is 100 °C but convert into Kelvin

Plug in the values...

V2= (200 cm3)(60+273.15)/ (100+273.15)

V2=178.56 cm3

Answer:

178.56 cm3

Explanation:

Answer:

The answer is below

Explanation:

The separation technique is used for separating immiscible liquids.

When separating, the stopper has to be removed when draining the lower layer so as to prevent a vacuum. If vacuum is allowed, the draining rate will reduce and stop.

The liquid should be mixed by shaking the funnel and then opening the stopcock so as the vent out gases.

When near interface between the layers, you should set your eye level so that you do not drain up to the second layer.

After completely draining the first layer, the second layer should be collected in a new flask.

After mixing the solutions in a separatory funnel, the stopper should be removed and the liquid should be mixed thoroughly and the layers allowed to separate. When you get close to the interface between the layers, get eye level with the funnel and slow the draining until the first layer is collected. Switch to a new flask to collect the second layer.

After mixing the solutions in a separatory funnel, the stopper should be removed and the liquid should be mixed thoroughly and the layers allowed to separate. When you get close to the interface between the layers, get eye level with the funnel and slow the draining until the first layer is collected. Switch to a new flask to collect the second layer.

Learn more:

brainly.com/question/24108403

Answer: 4 miles

Explanation:

Riding the bike 12 mph (miles per hour) for one hour, we would ride the bike 12 miles. Since 20 minutes is 1/3 of a hour, divide 12 by 3 to find out how far the biker traveled in 1/3 of the time: 4 miles Hope this helps

Hello!

[tex]\large\boxed{\frac{5}{3}\text{ hours} \text{ or }100 \text{ min}}[/tex]

Use the equation d = s · t where:

s = speed

t = time

d = distance

Plug in the given distance and speed:

20 = 12 ·t

Divide both side by 12 to isolate for t:

20/12 = t

Simplify:

5 / 3 = t

Therefore, it took 5/3 hours to bike. We can convert this to minutes if necessary:

5/3 · 60 min (in one hour) = (60 · 5) / 3 = 100 min.

Answer:

Su fórmula molecular es Na Cl y es el producto de la base hidróxido sódico (NaOH) y ácido clorhídrico, H Cl. En general, las sales son compuestos iónicos que forman cristales. Son generalmente solubles en agua, donde se separan los dos iones. Las sales típicas tienen un punto de fusión alto, baja dureza, y baja compresibilidad.

Explanation:

I've attached a picture down below for you, if this will help. If you need further explanation, please ask me :)

691 g CO₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Organic

Stoichiometry

Step 1: Define

[RxN - Balanced] C₁₂H₂₂O₁₁ + 12O₂ → 12CO₂ + 11H₂O + Energy

[Given] 448 g C₁₂H₂₂O₁₁ (sucrose)

[Solve] grams CO₂ (carbon dioxide)

Step 2: Identify Conversions

[RxN] 1 mol C₁₂H₂₂O₁₁ → 12 mol CO₂

[PT] Molar Mass of C - 12.01 g/mol

[PT] Molar Mass of H - 1.01 g/mol

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

Molar Mass of C₁₂H₂₂O₁₁ - 12(12.01) + 22(1.01) + 11(16.00) = 342.34 g/mol

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

Step 3: Stoich

Step 4: Check

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

691.119 g CO₂ ≈ 691 g CO₂

Answer:

b c

Explanation:

Answer: b c

Explanation: i did test

Answer:

the kinetic energy of colliding molecules changes

Average kinetic energy is the average sum of all kinetic energy of all the molecules of gases. Therefore, the correct option is option B that is the kinetic energy of colliding molecules changes.

It is a energy which is possess by a moving object. It is very difficult to find the correct value of kinetic energy so we find average kinetic energy. Which is very easy to calculate as compared to calculating kinetic energy. It is not dependent on the type of gases or mass of gases.

Mathematically,

K.E=1/2mv²

Where,

m= mass of object

v= velocity of object

As the activation energy increases, the kinetic energy of colliding molecules changes.

Therefore, the correct option is option B that is the kinetic energy of colliding molecules changes.

Learn more about the kinetic energy, here:

https://brainly.com/question/22174271

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