Copper will most likely react with which of the following elements?
silver (Ag)
actinium (Ac)
chlorine (Cl)
yttrium (Y)

Explanation:

Given species:

     Magnesium metals  = Mg

      Oxygen gas  = O₂  

Magnesium metal and oxygen gas are the reactants in this chemical process,

              2Mg + O₂   →   2MgO

The product of the reaction is MgO because both oxygen and magnesium are divalent.

This reaction is called a combination reaction where two species combines to form a single compound.

Taking into account the definition of avogadro's number, there are 312.14 grams in 9.40×10²⁵ molecules of H₂.

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.

Then you can apply the following rule of three: if 6.023×10²³ molecules are contained in 1 mole of H₂, then 9.40×10²⁵ molecules are contained in how many moles of H₂?

amount of moles of H₂= (9.40×10²⁵ atoms × 1 mole)÷ 6.023×10²³ atoms

amount of moles of H₂= 156.07 moles

On the other hand, molar mass is the amount of mass that a substance contains in one mole. In this case, the molar mass of H₂ is 2 \(\frac{g}{mole} \).

Then the mass that 156.07 mole of compound contains is calculated as:

156.07 moles×2 \(\frac{g}{mole} \)= 312.14 grams

Finally, there are 312.14 grams in 9.40×10²⁵ molecules of H₂.

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A reaction occurs as a result of the combination of reactants and products.

We have to learn that a reaction occurs as a result of the combination of reactants and products. We know that the products formed may often be quite different from the reactants that were combined to produce them.

Having said so, let us look at the equations one after the other;

Mg + 2HCl ------> MgCl2 + H2. There is the evolution of a colorless and odorless gas that gives a pop sound with glowing splint.

CuCl2 + HCl ----> There is no observation

2NaHCO3 + H2SO4 --> Na2SO4 + 2H2O + 2CO2 - There is evolution of a gas that turns lime water milky

CuO + H2SO4 → CuSO4 + H2O - The solution turns blue and there is no effect both on lime water and glowing splint.

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Answer:

CO2 (g)

Explanation:

In solids the interatomic or intermolecular space is least . It is most pronounced in gases . That is why inter molecular or interatomic attraction is least in gases . That is why gas flows .

Hence , when we try to compress a gas , due to inter molecular space , it is most likely to get compressed . It will be least compressed when we try to compress a solid because of lack of intermolecular space .

Answer:

Alias: Manganic Nitrate. Formula: Mn(NO3)3. Molar Mass: 240.9527. :: Chemistry Applications:: Chemical Elements, Periodic Table. its on google

Answer:

combustion

Explanation:

your welcome :)

Answer:

1) CO₂

2) 0.2551 g

Explanation:

The balanced reactions are:

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

MgCO₃ + 2HCl → MgCl₂ + H₂O + CO₂

1) The gas produced is CO₂.

2) Calculate mass of CaCO₃:

(0.5236 g) (0.4230) = 0.2215 g CaCO₃

Convert to moles:

(0.2215 g CaCO₃) (1 mol / 100.1 g) = 0.002213 mol CaCO₃

Find moles of CaCO₃:

(0.002213 mol CaCO₃) (1 mol CO₂ / mol CaCO₃) = 0.002213 mol CO₂

Convert to mass:

(0.002213 mol CO₂) (44.01 g / mol) = 0.09738 g CO₂

Calculate mass of MgCO₃:

(0.5236 g) (0.5770) = 0.3021 g MgCO₃

Convert to moles:

(0.3021 g MgCO₃) (1 mol / 84.31 g) = 0.003583 mol MgCO₃

Find moles of MgCO₃:

(0.003583 mol MgCO₃) (1 mol CO₂ / mol MgCO₃) = 0.003583 mol CO₂

Convert to mass:

(0.003583 mol CO₂) (44.01 g / mol) = 0.1577 g CO₂

Total mass of CO₂:

0.09738 g CO₂ + 0.1577 g CO₂ = 0.2551 g CO₂

When the volume of the container is increased, the reactions shifts to the left reactants to produce more moles of gas to increase the pressure inside the container and thereby decrease the volume.

According to Le-chatlier principal, when the equilibrium of  a system is disordered by some factors the system itself balance the factors and shift to a new equilibrium.

When the volume of the container is increased,  the system tends to decrease the volume by increasing the pressure. According Boyle's law, the volume decreases as pressure increases.

As the number of moles of gases increases, the pressure inside container increases and thus, the reactions shifts to the left reactants to produce more moles of gas.

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Beta carbohydrates have the OH on the second carbon as the opposite side.

This means that the OH group is attached to the second carbon in the carbohydrate chain, making it the anomeric carbon. The anomeric carbon is the carbon atom to which the OH group is attached and is a crucial part of the carbohydrate's structure. It is the point at which the carbohydrate can form either an alpha or beta configuration, depending on the orientation of the OH group, and it determines the carbohydrate's overall shape. The alpha or beta configuration of the anomeric carbon is also important in determining the carbohydrate's reactivity, as it can determine which other molecules the carbohydrate can interact with.

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The step in any reaction sequence that determines the rate law for the overall reaction is called the rate-determining step. TRUE.

This step is also known as the slowest step in the reaction sequence. The rate law for the overall reaction is determined by the reactants and the rate-determining step. Therefore, it is important to identify the rate-determining step in order to determine the rate law for the overall reaction.
                                 True, the step in any reaction sequence that determines the rate law for the overall reaction is called the rate-determining step. This step has the slowest rate among all the steps in the reaction sequence and thus governs the overall rate of the reaction.

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Answer:

i think it is D. All of the above

but i will check to see if it's right

Answer:

D all of the above

Explanation:

I got it right on my test

9.0 gram of NO can be produced from 12g of NH3 and 12 gram of O2 as per the balanced chemical reaction,

                        4NH3 + 5O2 ----> 4NO + 6H2O

The balanced chemical reaction is,

4NH3 + 5O2 ----> 4NO + 6H2O

Molar mass of NH3 is 17.03 g/mole

Mole NH3 = (12 g/17.03 g/mole) is 0.7046 mole

Molar mass of O2 is 32 g/mole

Mole O2 = 12 g/32 g/mole = 0.375 mole

The mole ratio of NH3 to O2 is 4:5. It means that 4 moles of NH3 need 5 moles of O2 for reaction to produce the given products. If we have 0.7046 mole of NH3,

The mole of O2 needed for reaction = (5/4) x 0.7046

                                                             = 0.8808 mole.

The amount of O2 needed for reaction with NH3 is 0.375 mol. so O2 is a limiting reactant.

The mole of NH3 required to react with 0.375 mole O2 is (4/5) x 0.375

                                                                                               = 0.3 mole.

So, NH3 is in excess of (0.7046-0.3) = 0.4046 mole. It will remain unreacted after the reaction unless more O2 is added for further reaction to produce more of the products.

The mass of NO  = (mole NO) x (molar mass of NO)

                            = 0.3 mole x 30.01 g/mole

                            = 9.003 g or approx. 9.0 g

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The correct question is,

 4NH3 + 5O2 ----> 4NO + 6H2O

How many grams of NO can be produced from 12 g of NH3 and 12 g of O2?

Answers

condensed structure:

CH₃(CH₂)₃CH₃

molecular formula:

C₅H₁₂

IUPAC name:

pentane

The acetic acid/acetate buffer system consists of a weak acid (acetic acid, CH3COOH) and its conjugate base (acetate ion, CH3COO-). When a base is added to the buffer system, the following process occurs to neutralize it:

1. The base reacts with the weak acid (acetic acid) in the buffer system to form its conjugate base (acetate ion) and water. For example, if a hydroxide ion (OH-) is added, it reacts with acetic acid as follows:

  OH- + CH3COOH → CH3COO- + H2O

2. The conjugate base (acetate ion) that is formed acts as a reservoir for hydrogen ions (H+). It can accept hydrogen ions from the solution if the pH increases. This helps to maintain the pH of the buffer system within a certain range.

3. The buffer system resists large changes in pH because the equilibrium between the weak acid and its conjugate base is shifted to maintain a relatively constant concentration of both species. This allows the system to neutralize the added base and maintain its acidic nature.

The acetic acid/acetate buffer system neutralizes an added base by reacting with it to form the conjugate base and water, and by utilizing the conjugate base to accept hydrogen ions and maintain the pH of the system.

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Answer:

\(\large \boxed{\text{0.88 L}}\)

Explanation:

The temperature and amount of gas are constant, so we can use Boyle’s Law.

\(p_{1}V_{1} = p_{2}V_{2}\)

Data:

\(\begin{array}{rcrrcl}p_{1}& =& \text{1.34 atm}\qquad & V_{1} &= & \text{ 0.56 L} \\p_{2}& =& \text{0.85 atm}\qquad & V_{2} &= & ?\\\end{array}\)

Calculations:  

\(\begin{array}{rcl}\text{1.34 atm} \times \text{0.56 L} & =& \text{0.85 atm} \times V_{2}\\\text{0.750 L} & = & 0.85V_{2}\\V_{2} & = &\dfrac{0.750}{0.85}\\\\& = &\textbf{0.88 L}\\\end{array}\\\text{The balloon's new volume is $ \large \boxed{\textbf{0.88 L}}$}\)

Answer:

In the attached image.

Explanation:

DNA to MRNA Thymine get's changed to Uracil. The bases match as:

A- U

U- A

G- C

C- G

Your amino acid is coded from the mRNA

State of matter refers to the forms in which matter can exist.

There are basically three states: Solid, Liquid, Gaseous.

But nowadays we extend this and add two more states: Plasma, Bose-Einstein Condensate

Answer

The molarity (M) of the H3PO4 solution = 1.0 M

Explanation

Given:

Mass of H3PO4 = 49.0 grams

Volume of the solution = 500 mL = 500/1000 = 0.5 L

What to find:

The molarity (M) of the H3PO4 solution.

Step-by-step solution:

Step 1: Convert 49.0 grams H3PO4 to moles using the mole formula.

The molar mass of H3PO4 = 97.994 g/mol

So,

Step 2: Calculate the molarity of the solution using the molarity formula.

Putting mole = 0.50 mol and volume = 0.50L into the formula, we have;

The molarity (M) of the H3PO4 solution = 1.0 M

Answer:

B. Hydrogen bonds exist only in the solid-state

Explanation:

Hydrogen bonds are basically the attraction between water molecules so it has to occur in water obviously. though hydrogen bonding exists between water molecules and not within them, it is what brings water together and doesn't let it float around like vapor (water in its gas state). so hydrogen bonds do NOT exist only in a solid-state

The statement that is not a property of water is: "Hydrogen bonds exist only in the solid state"

WHAT IS HYDROGEN BOND?

HYDROGEN BOND IN WATER MOLECULES:

Hydrogen bonds do not exist only in the solid state but the three states of matter as evidenced in water.

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The compound that would not undergo racemization in a base is c) (S)-3-phenyl-2-butanone.

A chiral substance undergoes a process called racemization in which it transforms into its racemic mixture, which contains equal proportions of both enantiomers. Racemization normally happens when the chiral centre is inverted or when the enantiomers are interconverted by a chemical reaction.

Aldehydes and ketones, among other substances containing a -hydrogen close to a carbonyl group, can go through enolization and tautomerization in a basic solution. The carbonyl molecule is changed into its enol form during this procedure, which results in a resonance structure with an alcohol group and a carbon-carbon double bond.

Only (c) (S)-3-phenyl-2-butanone does not have a -hydrogen next to the carbonyl group out of the options listed. Therefore, in a simple solution, it wouldn't go through enolization and subsequent racemization.

The additional options (a), (S)-2-phenylbutanal, (b), and (d), (S)-3-phenylbutanal, all include -hydrogens next to the carbonyl group, making them vulnerable to enolization and racemization in a basic environment.

Therefore, c) (S)-3-phenyl-2-butanone is the right response.

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The given structure is of formaldehyde an organic compound and it is acidic in nature.

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Answer:

4665.97

Explanation:

Answer:

d

Explanation:

Answer: 1cm³= 1mL

Explanation:

The two structures shown in the image are constitutional isomers. Option C

Constitutional isomers are compounds that have the same molecular formula but differ in the arrangement or connectivity of atoms. They have distinct chemical structures, resulting in different physical and chemical properties.

These isomers can exist due to the possibility of different bond arrangements or the presence of branching, double bonds, or ring structures. By altering the arrangement of atoms within a molecule, constitutional isomers exhibit unique properties, reactivity, and potential biological activities.

Thus, looking at the two structures shown, one can conclude that they are constitutional isomers.

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Answer:

Ecosystem

Explanation:

The levels of organization from lowest complexity to highest are:

species, population, community, ecosystem

Answer:  22) <     24) 0.003    30,000     25) 1 cc = 1 ml

Explanation:

When give a number in scientific notation, the exponent tells you how many places to move the decimal point.

\(22)\ 5\times 10^{-4}=0.0005\quad \longrightarrow 0.0005<1.0\)

\(24)\ 3\times 10^{-4}=0.0003\qquad \qquad 3\times 10^4=30,000\)

25) 1 cubic centimeter (cc) = 1 milliter (ml)

     The conversion factor is 1 to 1.  You just need to change cc to ml