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The table shows the number of reactants and products present during two separate chemical reaction

Which of the following statements correctly identifies the decomposition reaction and describes a substance involved?
Chemical reaction A, because the reactant is a compound
Chemical reaction B, because the product is a compound
Chemical reaction A, because the reactant is an element
Chemical reaction B, because the product is an element

The main environmental factors that affect microorganism growth include chemical inhibitors, oxygen, pH, nutrients, moisture and temperature.

Micro Organism are organism that can be seen with a microscope.

Microorganisms include bacteria, protozoa, algae, and fungi.

Micro organisms exist in its single-celled form or as a colony of cells.

The main environmental factors that affect microorganism growth include chemical inhibitors, oxygen, pH, nutrients, moisture and temperature.

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Answer:

27.50 g

Explanation:

Unless weight was somehow gained/lost during the reaction, the products should weigh as much as the reactants. Since this isn't specified the mass of the reactants should be equal to the mass of the products.

Answer: Bubbles, burning, odor, color change, and rusting.

Explanation: Chemical changes are changes to something that is irreversible.

Answer:

Explanation:

A solution of zinc metal and lead nitrate react to form zinc nitrate and lead metal.

Zn(s) + Pb(NO3)2 = Zn(NO3)2 + Pb

16.06 cm is the height of the tetra bromoethane column in the barometer in cm.

A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure.

Explanation:

Pressure of the liquid column=ρgh

ρ= density of the liquid

h= height of the column

g= due to gravity

the

height of the mercury column corresponding to 0.971 atm

= 0.951×76÷1atm = 73.796 cm

[tex]\rho_1h_1g=\rho_2h_2g[/tex]

2.96 g/mL x 73.796 cm =13.6 g/mL [tex]h_2[/tex]

[tex]h_2[/tex]=16.06148235 =16.06 cm

16.06 cm is the height of the tetra bromoethane column in the barometer in cm.

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The mass of the hydrogen gas in tank, given the data is 6.17 Kg

PV = znRT

Divid both sides by zRT

n = PV / zRT

but

mole (n) = mass (m) / molar mass (M)

Thus,

m / M = PV / zRT

m = MPV / zRT

m = (2.016 × 493.4615 × 220) / (1.45 × 0.0821 × 298)

m = 6169 g

Divide by 1000 to express in Kg

m = 6169 / 1000

m = 6.17 Kg

Complete question

A gaseous hydrogen stored at 500 Bar and 25°C in a composite storage with an internal volume of 220 liters. Determine the mass of the hydrogen in the tank. Use a compressibility factor Z = 1.45

3.06 kg

6.17 kg.

13.0 kg

5.05 kg

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Answer: d. energy must transfer to the carbon dioxide from its surroundings.

Explanation:

Sublimation is the phase change from a solid to a gas, meaning that the particles will have more kinetic energy (since particles in the solid phase are more ordered than particles in the gas phase, and thus particles in the gas phase have more energy). Thus, for sublimation to occur, the particles need more energy, which must come from its surroundings.

Considering the definition of molar mass, the moles of gas used are 10.625 moles.

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

Natural gas has a molar mass of 16.0 g/mole.

You started out the day with a tank containing 200.0 g of natural gas.  So, you can apply the following rule of three: If by definition of molar mass 16 grams are contained in 1 mole, 200 grams are contained in how many moles?

[tex]amount of moles at the beginning=\frac{200 gramsx1 mole}{16 grams}[/tex]

amount of moles at the beginning= 12.5 moles

At the end of the day, your tank contains 30.0 g of natural gas. So, you can apply the following rule of three: If by definition of molar mass 16 grams are contained in 1 mole, 30 grams are contained in how many moles?

[tex]amount of moles at the end=\frac{30 gramsx1 mole}{16 grams}[/tex]

amount of moles at the end= 1.875 moles

The number of moles used will be the difference between the number of moles used initially and the contents at the end of the day.

moles used= amount of moles at the beginning - amount of moles at the end

moles used= 12.5 moles - 1.875 moles

moles used= 10.625 moles

Finally, the moles of gas used are 10.625 moles.

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Answer: 1.6116

Explanation:

[tex](1.32)(0.82)+(2.94)(0.18)=\boxed{1.6116}[/tex]

The weighted average of a bean in the given sample data is equal to 1.6116 g.

The weighted average can be described as a calculation that takes into account the varying degrees of importance of the numbers in a data set. Each number is multiplied by a predetermined weight in the given data set before the final calculation is made in calculating a weighted average.

A weighted average assigns weights that calculate in advance the relative abundance of each data point. A weighted average is commonly determined to equalize the frequency of the values in a data set.

Given the abundance of Black eyes peas, m₁ = 82% = 0.82

The mass of the Black eyes peas, W₁ = 1.32 g

the abundance of cannellini beans, m₂ = 18% 0.18

The mass of cannellini beans, W₂ = 2.94 g

The weighted average = m₁W₁ + m₂W₂ = 1.32× 0.82 + 2.94 ×0.18

The weighted average of a bean = 1.6116 g

Therefore, the weighted average of a bean in the sample is 1.6116 g.

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Answer:

they are metals so they are:-

-malleable

-ductile

because metallic bonding is the same in all direction throughout the solid

When we convert 9.15 Calories to joules, the result obtained is 38.28 Joules

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

The conversion scale to convert calories to joules is given below:

1 Calorie = 4.184 Joules

Using the above scale, we can convert 9.15 calories to joules as shown below:

1 Calorie = 4.184 Joules

Therefore,

9.15 Calories = (9.15 Calorie × 4.184 Joules) / 1 Calorie

9.15 Calories = 38.28 Joules

Thus, we can conclude from the above calculation that the energy in joules is 38.28 Joules

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Answer:

38,200J

Explanation:

 9.15 x 4.18 x 1000= 38,247 → 38,200J

Answer:

1kg gold because when it's mined it needs stronger machines

1kg gold because when it's mined it needs stronger machines.

The amount of space occupied by a three-dimensional figure as measured in cubic units.

Gold is called a heavy metal because of its high density, which comes from the fact that each of its atoms is individually very heavy.

Hence, 1kg gold because when it's mined it needs stronger machines.

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Answer:

It's the first answer

Explanation:

Aqueous just means that the solution is just dissolved in water

Answer: CsCl

Explanation:

When naming ionic compounds, the metal comes before the nonmetal.

Answer:

i believe c. reversible

Explanation:

oxygen combines with hemoglobin and detaches

Answer:

c

Explanation:

same answer i got from quiz

Answer:

oxygen is a present in our atmosphere and mixed with other gases on the surrounding screen plants are also measure source of getting oxygen they take carbon dioxide from making their food by for the cities and give away oxygen in return

Explanation:

most of the earth oxygen comes from tiny Ocean plants are called phytoplaston

Answer:

The diagram represents the general equation for photosynthesis.

What does the X represent?

Explanation:

Carbon dioxide

The structure of the compound, there will be ten unique signals in the carbon 13 NMR of the compound.

The NMR signals shows the atoms in a compound that are in unique chemical environments. The atoms that are in the same chemical environment will only give one signal.

Based on the structure of the compound, there will be ten unique signals in the carbon 13 NMR of the compound.

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2NaNO3(aq) + BaSO4 = Ba(NO3)2(aq) + Na2SO4(aq) (s)

Procedures involved:

The cations or anions may transfer positions in this twofold replacement/displacement reaction, which results in AB + CD AD + CB. In such a reaction, water, an insoluble gas, or an insoluble solid must be one of the byproducts (precipitate). The reaction in question has the following molecular equation:

2NaNO3(aq) + BaSO4 = Ba(NO3)2(aq) + Na2SO4(aq) (s)

Double displacement:

When two atoms or groups of atoms swap positions, a double displacement reaction occurs, creating new compounds. Typically, aqueous solutions are where it happens.

Na2SO4 + BaCl2 BaSO4 + 2NaCl is an example of a double displacement reaction.

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Answer:

speed and direction are the two things

Answer: 0.118M

Explanation:

The formula for molarity is: [tex]M=\frac{mol solute}{L solution}[/tex]

First, we need to find the number of moles of NaCl.

[tex]2.70gNaCl*\frac{1molNaCl}{58.44gNaCl} =0.05molNaCl[/tex]

Next, we must convert millimeters to liters. We can do that by dividing the number of mL by 1000.

[tex]\frac{425mL}{1000} =0.425L[/tex]

Now we have our needed data! All we need to do now is plug in our data to the molarity formula.

[tex]M=\frac{0.05mol}{0.425L} =0.118M[/tex]

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The mass of manganese oxide (MnO2) that is needed to generate 126.0 g Zn(OH)2 is 220.56 g.

The mass of MnO2 that is needed to generate 126.0 g Zn(OH)2 is calculated as follows;

Zn + 2MnO₂ + H₂O → Zn(OH)2 + Mn₂O3

From the reaction above;

2(87 g/mol of MnO₂) ---------> 99.4 g/mol of Zn(OH)2

174 ---------------------> 99.4

? -------------------------> 126

= (126 x 174)/99.4

= 220.56 g

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Answer:

220.56

Explanation:

Answer: d. You would decrease the pressure

Explanation:

If the temperature of a gas is held constant, the pressure and volume vary inversely.

If the gas's temperature remains constant, then increase the volume of the gas with a decrease in the pressure. Therefore, option (D) is correct.

Boyle’s law can be described as at a constant temperature, the pressure exerted by a given mass of gas being inversely proportional to the volume occupied by the gas.

The pressure and volume of a gas at a particular temperature have an inverse relationship.

P ∝ 1/V

or   P₁ .V₁ = P₂. V₂                                                             ................ (1)

Where the initial and final pressure of the gas is P₁ and  P₂ respectively.  The initial and final volume of the gas is V₁ and  V₂ respectively at temperature 'T'.

Therefore, if we keep the temperature of the gas constant. them the volume of the gas will increase only if we decrease the pressure of the gas.

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The statement that can be placed in the blank cell to make the information in the table accurate is Plasma : (D). are made of neutral particles

Plasma can be defined as a form of matter, though its not as common as the three major forms of matter.

Plasma displays more of the features of a gas but it is not a gas. it has more density than a gas and is less dense than liquid and solid

In conclusion, The statement that can be placed in the blank cell to make the information in the table accurate is Plasma : (D). are made of neutral particles

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Answer:

Answer is (D) or fourth option

Explanation:

Plasmas are made of neutral particles

Answer:

V₂ = 4.80 L

Explanation:

Because you are dealing solely with pressure and volume, you can find the new volume using the Boyle's Law equation. The general equation looks like this:

P₁V₁ = P₂V₂

In this form, "P₁" and "V₁" represent the initial pressure and volume. "P₂" and "V₂" represent the new pressure and volume. You have been given all of the variables but V₂. Therefore, by plugging these values into the equation, you can simplify to find your answer.

P₁ = 602 torr              V₁ = 24.0 L

P₂ = 3010 torr            V₂ = ?

P₁V₁ = P₂V₂                                               <---- Boyle's Law equation

(602 torr)(24.0L) = (3010 torr)V₂             <---- Plug variables into equation

144448 = (3010 torr)V₂                            <---- Multiply 602 and 24.0

4.80 = V₂                                                 <---- Divide both sides by 3010

Hydropower can affect fish and other marine life which is the true statement and is denoted as option C.

This is the process in which water energy is converted into electrical energy through the use of dams and turbines.

When the dams are created, it blocks the path of marine activities and limits them to certain activities such as reproduction.

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Chemical bonds are formed when valence electrons are shared or donated.

Chemical bonds are formed between two or more atoms when electrons are transferred or shared between or among the participating atoms.

For example, ionic bonds are formed when a metal ion such as Na donates its valence electrons to a non-metallic ion such as Cl to form NaCl.

Covalent bonds are formed when participating ions shared their valence electrons to give each other octet states.

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The limiting reactant in the reaction is the NO molecule.

The limiting reactant is the reactant that is present in the least amount in the reaction. The rate of reaction depends on the limiting reactant.

Given the reaction; 4NH3 + 6NO --> 5N2 + 6H2O.

Number of moles of NH3 = 43.4 g/17 g/mol = 2.55 moles

Number of moles of NO = 30 g/30 g/mol = 1 mole

Now if 4 moles of NH3 reacts with 6 moles of NO

2.55 moles of NH3 reacts with 2.55 moles * 6 moles/ 4 moles

= 3.8 moles

Hence, the limiting reactant in this reaction is NO.

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Considering the definition of Avogadro's number:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

You can apply the following rule of three, considering the Avogadro's number:  If 1 mole of lithium contains 6.023×10²³ molecules, 2.7 moles of lithium contains how many molecules?

amount of molecules of lithium= (6.023×10²³ molecules × 2.7 moles)÷1 mole

amount of molecules of lithium=1.62621×10²⁴ molecules

Finally, the number of molecules of lithium is 1.62621×10²⁴ molecules.

On the other hand you can apply the following rule of three, considering the Avogadro's number:  If 1 mole of sodium chloride​ contains 6.023×10²³ molecules, 1.8 moles of  sodium chloride​ contains how many molecules?

amount of molecules of sodium chloride= (6.023×10²³ molecules × 1.8 moles)÷1 mole

amount of molecules of sodium chloride=1.08414 ×10²⁴ molecules

Finally, the number of molecules of sodium chloride is 1.08414×10²⁴ molecules.

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