helpppp me pleaseeee asaaap

Answer:

east

Explanation:

Explanation:

Well, the qualitative significance of a chemical equation is that it shows us concisely, and economically how matter interacts chemically in the breaking, and making of chemical bonds to form new substances…

Quantitatively, ALL stoichiometrically balanced equations show us that MASS is CONSERVED, and that “TANSTAAFL” , i.e. “there ain’t no such thing as a free lunch” , operates. And so 5∙g , 5∙kg , 5∙tonne of total REACTANT from all sources, leads to AT MOST to 5∙g , 5∙kg , 5∙tonne of total PRODUCT…. and in practice, we are not even going to get that… Electronic charge is also conserved in every chemical reaction … and we use this conservation principle when we write redox equation…

Chemical equations are the symbolic expression of the compounds and elements. It shows the quality and quantity by the chemical interaction and stoichiometry coefficient.

A chemical equation expresses the chemicals of the reactant and the product side in the form of symbols and mathematical expressions. They are quantitatively significant as they represent the stoichiometry coefficient. It tells about the moles needed by the reactants needed for product formation.

They also are qualitatively important as they depict the phases of the reactants and the products and tell the type of reaction like the decomposition, oxidation, reduction, combustion, etc. undergone by the substances.

Therefore, the chemical equation is significant both qualitatively and quantitatively.

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Answer:

Cl^-<NO3^-<H2O<F^-<CN^-

Explanation:

When we talk about base strength we are referring to how easily a chemical specie accepts protons.

The greater the ability of a specie to accept H^+, the greater its base strength.

The order of increasing base strengths of the species listed are shown in the answer above.

Answer:

weather is the state of the air at a particular place and time.

Explanation:

weather can be warm or cold, dry or wet, windy or cloudy

Astronauts appear to be bouncing on the moon because the force of gravity is weaker on the moon.

On planets such as Earth and natural satellites such as the moon, gravity causes objects are pulled towards the center of the planet/natural satellite.

On the moon, this force is weaker than on the Earth. Indeed, the gravity of Earth is equivalent to 9,807 m/s, while the gravity on the moon is 1,62 m/s.

This causes objects are still pulled towards the center of the moon but they are pulled with a much weaker force. Therefore, when people walk on the moon they seem to bounce.

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I don't care but one another time and I have any questions about this email

The chemical formula for the unknown compound : N₂O₃

Given

6.2 mol of oxygen and 4.1 mol of nitrogen.

Required

The chemical formula

Solution

Chemical formulas can be expressed in terms of empirical or molecular formulas.

The empirical formula shows the simplest mole ratio of a compound

Meanwhile, the molecular formula shows the actual ratio of the number of elements that make up the compound

We divide the two known moles by the smallest mole (moles of nitrogen)

[tex]\tt N\div O=\dfrac{4.1}{4.1}\div \dfrac{6.2}{4.1}=1\div 1.5=2\div 3[/tex]

The magnitude of k at 65.0∘C : 1912.7 /s

Given

k at 25 °C = 1.35 x 10² /s k1

T₁=25 + 273 = 298 K

T₂=65 + 273 = 338 K

Required

the magnitude of k at 65.0∘C

Solution

Arrhenius Equation :

[tex]\tt ln(\dfrac{k_1}{k_2})=(\dfrac{1}{T_2}-\dfrac{1}{T_1})\dfrac{Ea}{R}[/tex]

R : gas constant= 8.314 J/molK

Input the value :

[tex]\tt ln(\dfrac{1.35\times 10^2}{k_2})=(\dfrac{1}{338}-\dfrac{1}{298})\dfrac{55.5.10^3}{8.314}\\\\ln(\dfrac{135}{k_2})=-2.651\rightarrow \dfrac{135}{k_2}=e^{-2.651}\rightarrow k_2=1912.7[/tex]

Temperature,

Rate constant,

Gas constant,

By using the Arrhenius equation, we get

→ [tex]ln (\frac{k_1}{k_2} ) = (\frac{1}{T_2} - \frac{1}{T_1} )\frac{Ea}{R}[/tex]

By substituting the values, we get

→ [tex]ln (\frac{1.35\times 10^2}{k_2} ) = (\frac{1}{338} - \frac{1}{298} )\frac{55.5\times 10^3}{8.314}[/tex]

→        [tex]ln (\frac{135}{k_2} ) = -2.651[/tex]

                [tex]\frac{135}{k_2} = e^{-2.651}[/tex]

                 [tex]k_2 = 1912.7[/tex]

Thus the response above is right.

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Answer:

ь

They slow down

Explanation:

Oxygen gas produced : 0.7 g

Given

10.0 grams HgO

9.3 grams Hg

Required

Oxygen gas produced

Solution

Reaction⇒Decomposition

2HgO(s)⇒2Hg(l)+O₂(g)

Conservation of mass applies to a closed system, where the masses before and after the reaction are the same

mass of reactants = mass of products

mass  HgO = mass Hg + mass O₂

10 g = 9.3 g + mass O₂

mass O₂ = 0.7 g

Answer: methyl orange indicator

Explanation: Any indicator is actually suitable since the pH range is very high for strong acid and strong base reaction. You could also use phenolphthalein and methyl red indicator

Answer:

im going to go with the water is less dense than the glycerol

Explanation:

Answer:

it is turned into kinetic energy

Explanation:

Answer:

Kinetic energy is transferred from the leg to the soccer ball. or C

Explanation:

Hope this helps

Answer:

2

Explanation:

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

Molarity of HCl = 0.01 M

pH =?

Next, we shall determine the concentration of the hydrogen ion, [H⁺] in the pool. This can be obtained as follow:

HCl (aq) <=> H⁺ (aq) + Cl¯ (aq)

From the balanced equation above,

1 mole of HCl produced 1 mole of H⁺.

Therefore, 0.01 M HCl will also produce 0.01 M H⁺.

Thus, the concentration of the hydrogen ion, [H⁺] in the pool is 0.01 M

Finally, we shall determine the pH of the pool.

This can be obtained as follow:

Concentration of the hydrogen ion [H⁺] = 0.01 M

pH J?

pH = – Log [H⁺]

pH = – Log 0.01

pH = 2

Therefore, the pH of the pool is 2.

___________________________________________________________

Answer:

Chemical reactions that take place inside living things are called biochemical reactions. The sum of all the biochemical reactions in an organism is referred to as metabolism. Metabolism includes both exothermic (heat-releasing) chemical reactions and endothermic (heat-absorbing) chemical reactions.

___________________________________________________________

Answer:

Mass = 108 g

Explanation:

Given data:

Mass of water produced = ?

Number of moles of hydrogen = 6.00 mol

Solution:

Chemical equation:

2H₂ + O₂     →     2H₂O

Now we will compare the moles of hydrogen with water.

                H₂             :              H₂O

                  2             :               2

                  6             :             6

Mass of water:

Mass = number of moles × molar mass

Mass = 6 mol × 18 g/mol

Mass = 108 g

Answer:

B.moving towards each other

Answer:

B. moving towards

they move towards each other to create the trench

Answer:

total 11+14 is 25

now 4 are common and counted twice so subtract 4 so answer is 21

Answer: 0-14

Explanation: Hope this helps

Answer:

The pressure contribution from the heavy particles is 17.5 atm

Explanation:

According to Dalton's law of partial pressures, if there is a mixture of gases which do not react chemically together, then the total pressure exerted by the mixture is the sum of the partial pressures of the individual gases that make up the mixture.

In the simulation:

the pressure of the 50 light particles alone was determined to be 5.9 atm, the pressure of the 150 heavy particles alone was measured to be 17.5 atm,

the total pressure of the mixture of 150 heavy and 50 light particles was measured to be 23.4 atm

Total pressure = partial pressure of Heavy particles + partial pressure of light particles

23.4 atm = partial pressure of Heavy particles + 5.9 atm

Partial pressure of Heavy particles = (23.4 - 5.9) atm

Partial pressure of Heavy particles = 17.5 atm

Therefore, the pressure contribution from the heavy particles is 17.5 atm

Answer:

C. Changing shape and volume

Explanation:

If a volume is fixated it can't have free motion/roam like your typical liquid.

H2O or just water if you need to be simple

Answer:

just the process or action of moving or being moved lol

Answer:

b

Explanation:

The conserved quantities obeys the conservation laws. Among the given options mechanical energy and mass are examples of conservable quantities. The correct option is C.

A conserved quantity is defined as something which remains constant in amount over time and it cannot be created nor destroyed. In an isolated system, energy is an example of a conserved quantity.

The conserved quantities can change form one state to another, for example from light to heat, but the total amount of energy in the system will not change. Some of the other examples of conserved quantities are electric charge, momentum and angular momentum.

The mass can neither be created nor be destroyed, so it is a conserved quantity. Similarly the mechanical energy which is the sum of potential and kinetic energy is also conserved.

Thus the correct option is C.

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Answer:

Using the sprayer on your sink if you have one

Explanation:

If a chemical gets into your eye, you will need to flush the eye thoroughly with water in order to get the chemical out of the eye before it causes any kind of damage to the eye.

This could normally be done in an eye wash station. However in the absence of an eye wash station, one could use the sprayer of the sink if he/she has one. This will deliver water to completely flush the eye at lower pressure.

Answer:

3.91 mmHg

Explanation:

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

Initial volume (V₁) = 120 L

Initial pressure (P₁) = 1.5 mmHg

Initial temperature (T₁) = 10 °C

Final volume (V₂) = 50 L

Final temperature (T₂) = 34 °C

Final pressure (P₂) =?

Next, we shall convert 10 °C and 34 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T₁) = 10 °C

Initial temperature (T₁) = 10 °C + 273

Initial temperature (T₁) = 283 K

Final temperature (T₂) = 34 °C

Final temperature (T₂) = 34 °C + 273

Final temperature (T₂) = 307 K

Finally, we shall determine final pressure of the gas as follow:

Initial volume (V₁) = 120 L

Initial pressure (P₁) = 1.5 mmHg

Initial temperature (T₁) = 283 K

Final volume (V₂) = 50 L

Final temperature (T₂) = 307 K

Final pressure (P₂) =?

P₁V₁/T₁ = P₂V₂/T₂

1.5 × 120/283 = P₂ × 50 / 307

Cross multiply

P₂ × 50 × 283 = 1.5 × 120 × 307

P₂ × 14150 = 55260

Divide both side by 14150

P₂ = 55260 / 14150

P₂ = 3.91 mmHg

Thus, the new pressure of the gas is 3.91 mmHg

Answer:

when atom is neutral it has a no charge, looses electron has positive charge, gains electron gets negative charge

Explanation:

protons  have positive charges (+)

electrons have negative charges (-)

when an atom is neutral is means no additional electron is lost or gain

When an atom has a neutral charge it has neither too much or too little electrons  since it has not gained or lost any thus the zero charge ( no charge)

When an atom loses an electron since its losing an electron that has a negative charge it becomes a bit more positive so thus the positive charge

When the atom gains an electron it gains a bit more negativity then it had so its going to have a negative charge

Answer:

Villi

Explanation:

Villi are folds on the small intestine lining that increase the surface area to facilitate the absorption of nutrients.

The modification of the small intestinal wall that serves to increase surface area is called the microvilli.

Along the length of your small intestine, there are minute, finger-like extensions called intestinal villi comprised of cells.

Here,

Villi are projections that are finger-like and are densely populated with blood vessels. They are found in the inner lining of the small intestine and aid in nutrient absorption by expanding the surface area for absorption.

When we consume food, nutrients are taken up by our villi, which subsequently transport them into our bloodstream to be transported to where they are needed.

Digestive enzymes are present in the microvilli, which aid in the breakdown of proteins and carbohydrates. Villi aid in nutrient absorption in this manner.

Hence,

The modification of the small intestinal wall that serves to increase surface area is called the microvilli.

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