What volume of chlorine gas (Cl2), measured at STP, can be produced by the decomposition of 73.0g of hydrogen chloride gas (HCl), according to the balanced equation? (the other product is hydrogen gas (H2))

Answer:

Large leaves help plants to receive more sunlight when in tropical rainforests.

Answer:The nucleus contains two types of subatomic particles,  

       protons and neutrons.

Explanation:The protons have a positive electrical charge and the neutrons have no electrical charge. A third type of subatomic particle, electrons, move around the nucleus.

1st one

2_2_2

2nd one

3_1_1_3

i looked it up

The role that each organism play in this garden ecosystem include the following:

This comprises of organisms and the physical environment in which they interact with.

Earthworms are found in the soil and function as decomposers while butterfly acts as pollinators.

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Answer:

bird: consumer

earthworm: decomposer

flower: producer

butterfly: consumer

Explanation: i got it right :p

A 20.0 gram sample of alum is heated to drive off all of the water from the solid . 16.4 grams is the mass of the dehydrated

The mass of the dehydrated alum can be found by subtracting the mass of water that was driven off from the initial mass of the sample. Since all of the water is being driven off, we can assume that the mass of water is equal to the difference between the initial mass and the mass of the dehydrated alum.
To find the mass of water, we need to know the formula of alum and the percentage of water in it. The formula of alum is usually given as Al₂(SO₄)³·nH₂O, where n represents the number of water molecules per formula unit. In this case, we don't know the value of n, so we need to look it up or calculate it from the percentage of water in the sample.
Let's assume that the percentage of water in the sample is 18%, which is a common value for alum. This means that for every 100 grams of alum, there are 18 grams of water. Therefore, for a 20 gram sample of alum, the mass of water is:
Mass of water = 20 g x 0.18 = 3.6 g
Now we can calculate the mass of the dehydrated alum:
Mass of dehydrated alum = 20 g - 3.6 g = 16.4 g
Therefore, the mass of the dehydrated alum is 16.4 grams.

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Answer:

Explanation:

Here, we want to check if the equation of the reaction is balanced or not

Now, for a balanced equation of reaction, the number of atoms of the individual elements on both sides of the equation is equal

Now, let us check the atoms:

We have 1 Sr on both sides

We have 1 SO4 on both sides

We have 1 Mg on both sides

We have 2 OH on both sides

From what we can see, the equation of the reaction is balanced

Thus, the correct answer choice is B

16.95g is the mass of ethanol (C2H60) that are required to produce 1,000 kJ during boiling? The heat of vaporization of ethanol is 38.6 kJ / mole.

The most fundamental characteristic of matter is mass, which is one of the basic quantities in physics. Mass is a term used to describe how much matter is there in a body. The kilogramme (kg) is the international standard of mass. A nuclear reaction, for instance, results in the total weight of the substance being reduced as a tiny quantity of matter is transformed into a very large amount of energy.

moles of ethanol = 38.6/  1,000=0.368moles

molecular weight of ethanol =46.07g/mol

mass = 0.368×46.07

         = 16.95g

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Linoleic acid [18:2(δ9,12)] is an essential polyunsaturated fatty acid that cannot be synthesized by the human body and must be obtained through diet. It plays a crucial role in maintaining the structural integrity of cell membranes and is a precursor to several important signaling molecules.

However, one false statement regarding linoleic acid is that it is only found in animal products. This is not true as it is predominantly found in vegetable oils such as soybean, sunflower, and corn oil.

Adequate intake of linoleic acid is necessary for optimal health, but excessive intake may have negative effects on inflammation and chronic disease risk.

It is recommended that adults consume 5-10% of their daily caloric intake from linoleic acid sources.

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The balanced for the reaction is:

2KI + Pb(NO₃)₂ → Pbl₂ + 2KNO₃

When the equation is balanced, the number of atoms for each element on both the reactant and product sides of the equation are equal. This can be seen below:

      Reactant   Product

K         2                 2

I          2                  2

Pb      1                    1

N       2                   2

O       6                  6

Answer:

they're losing electrolytes

Explanation:

When athletes sweat, they're losing electrolytes primarily in the form of sodium (Na+) and chloride (Cl-), so when you start to replace lost fluids, ahtletes should replace the electrolytes as well. Potassium (K+), Magnesium (Mg2+) and Calcium (Ca2+) are electrolytes also lost through sweating.

An atom's radius is well under 1 nanometer, or one billionth of a meter.

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The statement that is true of all three titrations is that they require the same volume of NaOH to reach the second equivalence point (assuming complete dissociation of the diprotic acid H2C into two H+ ions).

As for the second part of the question, none of the statements are necessarily true of all three titrations. The initial pH of each acid will depend on the concentration of the acid and the strength of the acid. The pH at the first equivalence point will depend on the strength of the acid being titrated and the concentration of the acid and base used. The final pH will depend on the volume of the base added and the strength of the acid being titrated. Therefore, each titration will have unique pH characteristics depending on the specific acid being titrated and the conditions of the experiment.

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Answer:

https://uach.mx/articulo/2017/10/20/biomateriales-como-implantes-en-el-cuerpo-humano/

Explanation:

utilizar este sitio web

Answer:

Chemical

Explanation:

Because it's being done by chemical means

Answer:

9.90

Explanation:

Given [H+] = 1.25 x 10^-10 M, we can calculate the pH using the formula:

pH = -log10([H+])

pH = -log10(1.25 x 10^-10)

Using logarithmic properties:

pH = -log10(1.25) - log10(10^-10)

Since log10(10^-10) is equal to -10:

pH = -log10(1.25) - (-10)

pH = -log10(1.25) + 10

Now, evaluating the logarithm using a calculator:

pH = -0.0969 + 10

pH = 9.9031

Therefore, the pH of the solution with [H+] = 1.25 x 10^-10 M is approximately 9.9031. Rounding it to two decimal places, the pH is approximately 9.90.

Answer:

the correct answer is letter B

Answer:

The new pressure becomes one third of the initial pressure.

Explanation:

The relation between pressure and volume at constant temperature is given by :

\(P\propto \dfrac{1}{V}\\\\P=\dfrac{1}{V}\)

Let new pressure and volume be P' and V' respectively.

V'=3V (given)

So,

\(P'=\dfrac{1}{V'}\\\\=\dfrac{1}{3V}\\\\=\dfrac{1}{3}\times \dfrac{1}{V}\\\\P'=\dfrac{1}{3}\times P\)

Hence, new pressure becomes one third of the initial pressure.

Answer:

Nucleic acid is made from nucleotides

A nucleotide is a compound containing three component units, namely a pentose sugar, a heterocyclic nitrogenous base and a phosphate group.  Nucleic acid is the molecule made from nucleotides. The correct option is D.

The Nucleic acids are defined as the polynucleotides of very high molecular masses in which the nucleotide units are linked through phosphate ester linkages. Based on the type of pentose sugar present, there can be two types of nucleic acids.

The nucleic acids are very important biopolymers of the cells which are responsible for the biosynthesis of proteins and transmission of hereditary character. RNA and DNA are nucleic acids.

RNA and DNA are larger molecules formed from repeating smaller units called nucleotides. Nucleic acid with ribose as the pentose sugar is called RNA and 2-deoxyribose sugar is called DNA.

Thus the correct option is D.

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If an IV bag of 500 mL D5W is infusing at a rate of 50 mL/hr, and the IV bag was hung at 11:30 am, the infusion will be complete in 10 hours and 30 minutes.

To determine the time it takes for the infusion to be complete, we need to consider the volume of the IV bag and the infusion rate.

The IV bag contains 500 mL of D5W (5% dextrose in water). The infusion pump is set at a rate of 50 mL/hr, which means 50 mL of the solution is administered every hour.

To find the time it takes for the infusion to be complete, we divide the total volume of the IV bag (500 mL) by the infusion rate (50 mL/hr):

Time = Volume / Rate

Time = 500 mL / 50 mL/hr

Time = 10 hours

Since the IV bag was hung at 11:30 am, we add 10 hours to this time to determine when the infusion will be complete:

11:30 am + 10 hours = 9:30 pm

Therefore, the infusion will be complete at 9:30 pm.

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Answer:

number 2 formation of substance in a different state

Answer:

theirs a $50 tax with the income hes making

Explanation:

Answer:

$50

Explanation:

So julio earns $300 a week(summer job) and the paycheck he deposits in the bank is $250,so you just need to subtract & julio is paying $50 tax

Answer:

The formula mass of Na2S04 is 142.04 g/mol

Answer:

142.04 g/mol

Explanation:

the formula Na2SO4 means:two moles sodium (45.98g), one mile sulfur (32.06g), and four moles oxygen (64.00g) combine to form one mole of sodium surface (142.04g).

Answer:

Renewable resources include biomass energy (such as ethanol), hydropower, geothermal power, wind energy, and solar energy. Biomass refers to organic material from plants or animals. This includes wood, sewage, and ethanol (which comes from corn or other plants).

five examples of renewable resources

Solar energy.

Wind energy.

Geothermal energy.

Hydropower.

Bioenergy.

I hope it help you

Answer:

The most popular renewable energy sources

currently are

Solar energy

Wind energy

Hydro energy

Tidal energy

Geothermal energy

Biomass energy

The pure water is considered as the neutral substance as the positive and negative ions balance each other out. The correct option is D)

The H₃O⁺ is called the hydronium ion, and it will makes the acidic in nature. The OH⁻ ion  is called as the hydroxyl ion and it will makes the basic in nature. In the water, there is thein  balance between the hydroniums and the hydroxyls so they will cancel out each others' charges. Therefore the Pure water is neither the acidic in nature or the basic.

Thus, the pure water is the neutral in nature and the value on the pH scale is 7.

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Answer:

stars,auroras,a neon sign

Explanation:

just did it

After one day, approximately 8.67mg of the sample will be remaininga) The function that models the sample of Technetium-99 is given by

f(t) = P₀e^(-kt)

Where,P₀ = initial quantity = 100mgk = decay constantt = timef(t) = remaining quantity after t time.

A half-life of 6 hours is given. The decay constant can be found using the half-life formula:

T½ = (ln 2)/k6

= (ln 2)/kk

= (ln 2)/6f(t)

= P₀e^(-kt)f(t)

= 100e^(-0.1155t)mg

b) After one day, 24 hours = 4 half-lives Remaining amount,

f(t) = P₀e^(-kt)f(24)

= 100e^(-0.1155 × 24)

= 100e^(-2.772)

≈ 8.67mg

After one day, approximately 8.67mg of the sample will be remaining. The function that models the sample is

f(t) = 100e^(-0.1155t), where t is time in hours and f(t) is the remaining quantity in milligrams.

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After one day, approximately 8.67mg of the sample will be remaininga) The function that models the sample of Technetium-99 is given by

f(t) = P₀e^(-kt)

Where,P₀ = initial quantity = 100mgk = decay constantt = timef(t) = remaining quantity after t time.

A half-life of 6 hours is given. The decay constant can be found using the half-life formula:

T½ = (ln 2)/k6

= (ln 2)/kk

= (ln 2)/6f(t)

= P₀e^(-kt)f(t)

= 100e^(-0.1155t)mg

b) After one day, 24 hours = 4 half-lives Remaining amount,

f(t) = P₀e^(-kt)f(24)

= 100e^(-0.1155 × 24)

= 100e^(-2.772)

≈ 8.67mg

After one day, approximately 8.67mg of the sample will be remaining. The function that models the sample is

f(t) = 100e^(-0.1155t), where t is time in hours and f(t) is the remaining quantity in milligrams.

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Taking into account the Charles' law, the temperature of the gas if the volume drops to 75.0 L is 246 K or -27 C.

Charles' law establishes the relationship between the temperature and the volume of a gas when the pressure is constant. This law says that for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases. That is, the volume is directly proportional to the temperature of the gas.

Mathematically, Charles' law is a law that says that when the amount of gas and pressure remain constant, the ratio between volume and temperature will always have the same value:

\(\frac{V}{T}=k\)

Considering an initial state 1 and a final state 2, it is fulfilled:

\(\frac{V1}{T1}=\frac{V2}{T2}\)

In this case, you know:

Replacing in Charles's law:

\(\frac{100 L}{328 K}=\frac{75 L}{T2}\)

Solving:

\(T2x\frac{100 L}{328 K}=75 L\)

\(T2=\frac{75 L}{\frac{100 L}{328 K}}\)

T2= 246 K= -27 C

Finally, the temperature of the gas if the volume drops to 75.0 L is 246 K or -27 C.

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