For the reaction 2HNO3 + Mg(OH)2 + Mg(NO3)2 + 2H20, how many grams of magnesium
nitrate are produced from 17.37 mol of nitric acid, HNO3?
Select one:
O a. 1290
Ob. 859
O c. 5160
Od. 1080

Answer:

27.63 g of H2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

8CO + 17H2 → C8H18 + 8H2O

Thus, we can say that:

From the balanced equation above,

8 moles of CO reacted with 17 moles of H2.

Next, we shall determine the number of mole H2 that will react completely with 6.50 moles of CO.

This can be obtained as illustrated below:

From the balanced equation above,

8 moles of CO reacted with 17 moles of H2.

Therefore, 6.5 moles of CO will react with = (6.5 x 17)/8 = 13.813 moles of H2.

Therefore, 13.813 moles of H2 is needed to react completely with 6.50 moles of CO.

Finally, we shall convert 13.813 moles of H2 to grams. This can be achieved by doing the following:

Molar mass of H2 = 2x1 = 2 g/mol

Mole of H2 = 13.813 moles

Mass of H2 =.?

Mole = mass /molar mass

13.813 = mass of H2 /2

Cross multiply

Mass of H2 = 13.813 x 2

Mass of H2 = 27.63 g

Therefore, 27.63 g of H2 is needed for the reaction.

Explanation:

warm honey easier to pour than cold honey due to Increasing the temperature converts the sugars into water, which flows easier.

Honey contains sugar,  water  and other ingredients, where Sugar gives  gives sweetness, water maintain fluidity, and other components are present in a least amount and the differences are the color, aroma and taste.

Three types of sugar such as fructose (41%), grape sugar  or glucose about 34%  and sucrose contain 1 and 2%, other components include  minerals, proteins, acids and undetermined matter.

Minerals constitute 3.68%, increase the value of honey for human consumption and the most common minerals are potassium, chlorine, sulfur, calcium, sodium, phosphorus, magnesium, silicon, iron, manganese and copper.

Proteins are collected from nectar and pollen  which is the integral parts of plants, acids are also the component,  vitamn C and some B complex vitamins  such as riboflavin, pantothenic acid, pyridoxine, biotin, nicotinic acid are present.

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Answer:good luck!

Explanation:

Answer:

The answer is option D.

CH3-CH2-CH2-CH=CH2

it's name is Pentene and it's an alkene

Hope this helps you

Answer:

because moles is the chemical unit*Avogadro's number, meaning it's the amount of atoms in the given unit.

Explanation:

Answer:

5.65

Explanation:

Answer:

A. Silver is a catalyst in this reaction.

Explanation:

The most common use of rare-earth metals is as catalysts in chemical reactions.

To solve such this we must know the concept of chemical reaction. Therefore, the correct option is option A that is  Silver is a catalyst in this reaction.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

A reaction between ethene and oxygen is used to produce epoxyethane. When silver is combined with ethene, the reaction for producing epoxyethane occurs much faster.  Silver is a catalyst in this reaction.

Therefore, the correct option is option A that is Silver is a catalyst in this reaction.

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Answer:

CaO

how:

since its an iconic compound (metal(Ca)+non-metal(O)=iconic(CaO) we have to take account the charges

so;

[tex]Ca^{+2}[/tex] [tex]O^{-2}[/tex]

now we will cross them

[tex]Ca_{2} O_{2}[/tex]

since both the values are same will cross it out.

hence: CaO

Answer:

Option C. Energy Profile D

Explanation:

Data obtained from the question include:

Enthalpy change ΔH = 89.4 KJ/mol.

Enthalpy change (ΔH) is simply defined as the difference between the heat of product (Hp) and the heat of reactant (Hr). Mathematically, it is expressed as:

Enthalpy change (ΔH) = Heat of product (Hp) – Heat of reactant (Hr)

ΔH = Hp – Hr

Note: If the enthalpy change (ΔH) is positive, it means that the product has a higher heat content than the reactant.

If the enthalpy change (ΔH) is negative, it means that the reactant has a higher heat content than the product.

Now, considering the question given, the enthalpy change (ΔH) is 89.4 KJ/mol and it is a positive number indicating that the heat content of the product is higher than the heat content of the reactant.

Therefore, Energy Profile D satisfy the enthalpy change (ΔH) for the formation of CS2 as it indicates that the heat content of product is higher than the heat content of the reactant.

Answer: D. Water changes from a gas to a solid to a liquid.

Explanation:

Wat

According to the phase diagram for [tex]H_{2}O[/tex] water changes from a solid to a gas to a liquid at 1 atm pressure as the temperature is increased from -10 degree Celsius to 110 degree Celsius.

The phase diagram of water system comprises graphical representation of various phase. The slope of line connecting the solid state and liquid states is -ve (negative) rather than +ve (positive).

Water is an unusual substance in solid state is less denser in its liquid state. In liquid state of water ice floats.

Here, the phase of water changes from a solid to a gas to a liquid.

Thus, from above conclusion we can say that water changes from a solid to a gas to a liquid at 1 atm pressure as the temperature is increased from -10 degree Celsius to 110 degree Celsius.

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Answer:

C

Explanation:

For each reaction, compare molecules of reactant to molecules of product. Decrease entropy means I'm looking for the one that decreases.

Answer:

The two most basic types of bonds are characterized as either ionic or covalent. In ionic bonding, atoms transfer electrons to each other. ... In short, atoms with the same electronegativity share electrons in covalent bonds, because neither atom preferentially attracts or repels the shared electrons.

Hope this helps.....

Answer: 0.714 moles of [tex]PbI_2[/tex] will be produced from 237.1 g of potassium iodide

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of potassium iodide}=\frac{237.1g}{166g/mol}=1.428moles[/tex]

The balanced chemical reaction is:

[tex]Pb(NO_3)_2+2KI\rightarrow PbI_2+2KNO_3[/tex]

According to stoichiometry :

2 moles of [tex]KI[/tex] produce =  1 mole of [tex]PbI_2[/tex]

Thus moles of [tex]KI[/tex] will require=[tex]\frac{1}{2}\times 1.428=0.714moles[/tex]  of [tex]PbI_2[/tex]

Thus 0.714 moles of [tex]PbI_2[/tex] will be produced from 237.1 g of potassium iodide

Answer:

C

Explanation:

I am not 100% sure tho correct me if I'm wrong pls:/

this compound is called 2-propanamine 2 indicates the position of the amino group propan- indicates the radical (joy123333 do they make anyone a mod?)

Answer:

A) open switch

Explanation:

it is an open switch, seeing that when the switch is open, there is a gap between the wire and switch preventing any electric current from flowing. A closed switch is the opposite.

The flow of current is needed to be circuit closed. The electrons are starts following form one end to other end. The lack of current in the circuit is due to open switch.

Current is said to be the flow of electrons in an electric circuit. The electrons starts flow is mainly due to potential difference.

Current is represented by I.

SI unit of current is Ampere.

In home, the circuit is designed in such a way that, the flow of electricity is controlled by switch. If switch is off mode, there is no electricity flow and glow light or electrical application.

Voltage is the difference in electric potential between two points. Current is just the rate of flow of electric charge.

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Answer:

a. 2.49

Explanation:

Molar mass of HCl= 36.46 g

So, no. of moles=418.8/36.46=11.48

Molality= no. of moles/mass of solvent= 11.48/4.62= 2.49

Answer: Specific gravity=Density of material/Density of water

Explanation:

https://courses.lumenlearning.com/suny-osuniversityphysics/chapter/14-1-fluids-density-and-pressure/

Answer:

3-Methylhex-2-ene  

Explanation:

You count the atoms in the stems of the names and add them up.

C. 3-Methylhex-2-ene

           Methyl = 1C

         Hexene = 6C

Methylhexene = 7C

A. 2-Methylhept-1-yne is wrong. It has 1C + 7C = 8C

B. 2-Methylpropane is wrong. It has     1C + 3C = 4C

D. 3-Methylpent-1-ene is wrong. It has 1C + 5C = 6C

Answer:

nucleophilic

Explanation:

Answer:

I think its nucleophilic.

Explanation:

Answer: large rocks and debris on a slope

Explanation: Mass movement can simply be explained as the flow of earth materials down a slope. Movement of these materials such as rock particles , debris and soils are aid by the steepness of the slope or topography, wind or water moving down a slope at high speed and gravitational influence causing these particles to move down slope in the form of creep, landslide, slump or mudflow. When the slopes are covered with large rocks and debris, the occurrence of mass movement becomes imminent as these particles becomes unstable at slopes. Other influencing factor may include the movement of heavy wind or water down a slope or hill.

Answer:

when silver articles exposed to air silver racts with Sulphur present in the atmosphere and form a black layer of silver sulphide on the surface. copper articles get tarnished by reacting with air and water. due to this, a layer is formed over copper vessels.

Explanation: When silver is exposed to sulfur-containing gases in the air, it discolours and then darkens as it reacts with the gas to form a surface layer of tarnish If a silver object is to be kept from tarnishing, it must be protected from sulfur-containing gases.

Answer:

0.00302min⁻¹ = k

Explanation:

In a first order reaction the concentration of the reactant decrease following the equation:

ln[A] = -kt + ln[A]₀

ln [A] / [A]₀ = -kt

Where [A] represents actual and initial concentration of the reactant, k rate constant and t time.

As the reactant drop to 18.0% of its initial concentration  [A] / [A]₀ = 0.18

And time = 56.7min:

ln [A] / [A]₀ = -kt

ln 0.18 = -k*56.7min

-1.715 / 56.7min = -k

Explanation:

Most Americans have encountered some bacteria at some point in their lives, whether it was acquired from restaurant food or a grocery store, which caused them to claim they later had food poisoning. There are multiple nasty bacteria that can cause this, and there are many misconceptions about how they end up in our food, and what the best ways to avoid them are. To be forewarned is to be forearmed, so here are several misconceptions about food safety and the practices involved that can leave us satisfied, or ruin our day with stomach churning nastiness.

Answer:it decreases customer satisfaction

Explanation:

Answer:

NH3(g) + H2O(1) → NH4+(aq) + OH (aq)

HF(aq) + H2O(1) → H3O+(aq) + F (aq)

Explanation:

Acid-base reactions are chemical reactions involving acids and bases. Acids tend to ionize/dissociate in water, a property which determines their strength. Ionization of an acid refers to the acid losing its hydrogen ion (H+) in water solution. An acid ionizes or dissociates to form a conjugate base.

A strong acid is so because it ionizes completely in water i.e. loses all its hydrogen ion (H+) while a weak acid partially ionizes in water.

In the chemical reactions;

1) NH3(g) + H2O(1) → NH4+(aq) + OH (aq)

H20 loses its hydrogen ion (H+) in this reaction to form an anion (OH-). Hence, water (H20) is an acid in this case which ionizes to form a conjugate base (OH-). This is an example of ionization of acid.

2) HF(aq) + H2O(1) → H3O+(aq) + F (aq)

Hydrogen fluoride (HF) loses its hydrogen ion (H+) in the presence of water to form anion (F-). The HF is the acid while F- is it's conjugate base. Thus, an example of ionization of acid

Answer:

850 Calories.

Explanation:

The following data were obtained from the question:

Mass (M) = 50 g

Initial temperature (T1) = 20 °C

Final temperature (T2) = 37 °C

Specific heat capacity (C) of water = 1 cal/g°C

Heat absorbed (Q) =..?

Next, we shall determine the change in temperature of water.

This can be obtained as follow:

Initial temperature (T1) = 20 °C

Final temperature (T2) = 37 °C

Change in temperature (ΔT) =..?

Change in temperature (ΔT) = T2 – T1

Change in temperature (ΔT) = 37 – 20

Change in temperature (ΔT) = 17 °C

Finally, we shall determine the heat absorbed. This can be obtained as follow:

Mass (M) = 50 g

Specific heat capacity (C) of water = 1 cal/g°C.

Change in temperature (ΔT) = 17 °C

Heat absorbed (Q) =..?

Q = MCΔT

Q = 50 x 1 x 17

Q = 850 Calories

Therefore, the heat absorbed is 850 Calories.

Answer:

There is only one formula to use and we should assume ideal gas. This equation is: PV=nRT. For the following questions manipulate this equation to get the answer.

1. n = PV/RT = (249*1000 Pa)(15.6 L)(1 m^3/1000 L)/(8.314 Pa-m^3/mol-K))(21+273) = 1.59 mol

2. P = nRT/V = (1.59)(8.314)(51+273)/(15.6/1000)(1000) = 274.55 kPa

3. Since the answer in #2 is more than 269 kPa, then the tires will likely burst. 4. Reduce pressure way below the limit 269 kPa.

Explanation:

Answer:

There is only one formula to use and we should assume ideal gas. This equation is: PV=nRT. For the following questions manipulate this equation to get the answer.

1. n = PV/RT = (249*1000 Pa)(15.6 L)(1 m^3/1000 L)/(8.314 Pa-m^3/mol-K))(21+273) = 1.59 mol

2. P = nRT/V = (1.59)(8.314)(51+273)/(15.6/1000)(1000) = 274.55 kPa

3. Since the answer in #2 is more than 269 kPa, then the tires will likely burst. 4. Reduce pressure way below the limit 269 kPa.

Explanation:

Answer:

A type of granite?

Explanation:

The photo is a bit hard to see, but I'm guessing, from its smooth edges and the streaky colours that its a type of granite?

Looks like the type of granite used on granite tabletops....

I might be wrong, it's just a guess!

Hope this helped in some way....

Bluey :)

Answer:

C. Collisions of the right energy are more likely.

Explanation:

By increasing the concentration of reactants, a higher number of reacting molecules or ions are present in the reaction. This increases the chances of collisions occurring to increase the reaction rate.

Answer: C

Explanation:

collisions of the right energy are more likely

Answer:

O2(g) as a product

Explanation:

took the test

The substances which appear on the left hand side of the chemical equation are called the reactants and the products are on the right hand side. Here oxygen appears as a reactant in the final equation. The correct option is B.

A chemical equation in which the number of atoms of reactants and products on both sides of the equation are equal is defined as the balanced chemical equation. A balanced equation obey the law of conservation of mass.

Here the given two equations are:

C (s) + 1/2 O₂(g) → CO (g)

CO (g) + 1/2 O₂(g) → CO₂ (g)

On adding the above two equations:

C (s) + O₂(g) → CO₂ (g)

So in the final chemical equation, oxygen appears on the reactant side. So oxygen is a reactant.

Thus the correct option is B.

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The given question is incomplete, most probably your full question was:

Consider the following intermediate chemical equations.

C (s) + 1/2 O₂(g) → CO (g)

CO (g) + 1/2 O₂(g) → CO₂ (g)

How will oxygen appear in the final chemical equation?

A. as a product

B. as a reactant

C. as a salt

D. as a mixture