What type of reaction is shown below?
C5H12() + 502(g) → 5CO2(g) + 6H2(g)
A. Combustion
B. Precipitation
C. Neutralization
D. Decomposition

Answer:

B. Be

Explanation:

Answer:

P.S

Explanation:

Because sulphur has low electronegative magnitude, hence low polarity potential.

The sulphur atom doesn't not get distorted hence increase in ionic degree character.

Answer:

The release of energy from fuels is used to make other forms of energy. When gasoline burns in a car engine, some of the chemical energy in the gasoline is converted into heat. The heat is converted into mechanical energy. The mechanical energy moves the car.I hope this helped!

Explanation:

Answer: D

Explanation:

The scientists design a system by isolate their experiment from unwanted influences. Therefore, option D is correct.

Chemistry's field of systems chemistry strives to understand intricate webs of interdependent molecules and their system-level characteristics. These characteristics cannot be attributed to the individual components working independently, but rather to the aggregate behavior of the system's components.

A system is a well-organized group of components that work closely together to achieve a single objective. The system receives a variety of inputs, processes those inputs through certain steps to produce specific outputs, and then combines those outputs to achieve its overall objective.

The two main categories are natural systems and designed systems. Subatomic systems, various types of biological systems, our planet, the solar system, the galactic system, and the universe are all examples of natural systems.

Thus, option D is correct.

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Answer:

Chemical standard state

a. Temperature is 25C

b. Initial concentration of reactants and products is 1M

Biochemical standard state

a. Temperature is 25C

b. Initial concentration of reactants and products is 1M

Explanation:

The standard state is the reference state of a material which can be used to calculate its properties under other nonstandard conditions.

The biochemical standard state include;

a. Temperature is 25C

b. Initial concentration of reactants and products is 1M

Similarly, the chemical standard state include;

a. Temperature is 25C

b. Initial concentration of reactants and products is 1M

Hence the answer.

Answer:

Start your streak by answering any question. You'll get bonus points from day 2.

Answer:

711.96 mL

Explanation:

Using the combined gas law equation;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (mmHg)

P2 = final pressure (mmHg)

V1 = initial volume (mL)

V2 = final volume (mL)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question,

P1 = 785.0 mmHg

P2 = 847.0 mmHg

V1 = 669.0 mL

V2 = ?

T1 = 17.0 °C = 17 + 273 = 290K

T2 = 60.0 °C = 60 + 273 = 333K

Using P1V1/T1 = P2V2/T2

785 × 669/290 = 847 × V2/333

525165/290 = 847 V2/333

1810.91 = 2.54 V2

V2 = 1810.91 ÷ 2.54

V2 = 711.96 mL

Answer:

A. Mixture

Explanation:

Our air has a group of gases. For example, you said nitrogen & oxygen, Which is significantly a mixture.

Answer:

Li is limiting reactant

Explanation:

Based on the reaction:

6Li + N2 → 2Li3N

Where 6 moles of Li reacts per mole of N2

To solve this question we must convert the mass of each reactant to moles and using the chemical equation we can find limiting reactant

Moles Li -6.941g/mol-

1.50g * (1mol / 6.941g) = 0.2161 moles Li

Moles N2 -Molar mass:28g/mol-

1.50g * (1mol / 28g) = 0.0536 moles N2

For a complete reaction of 0.536 moles N2 are needed:

0.536 moles N2 * (6mol Li / 1mol N2) = 0.3214 moles Li

As there are just 0.2161 moles of Li

Solution :

The balanced equation is :

                              [tex]$Ni^{2+}+2H_2C_4H_6O_2N_2 \rightarrow Ni(H_2C_4H_6O_2N_2)_2+2H^+$[/tex]

Molar mass           56.7            116                        290.7

From the balanced equation,

2 mole

= 2 x 116 g of [tex]$H_2C_4H_6O_2N_2$[/tex] produces 1 mole = 290.7 g of nickel dimethylglycoxime

or 2 x 116 mg of [tex]$H_2C_4H_6O_2N_2$[/tex] produces 1 mole = 290.7 g of nickel dimethylglycoxime

0.175 mg of [tex]$H_2C_4H_6O_2N_2$[/tex] produces [tex]$\frac{0.175 \times 290.7}{2 \times 116}$[/tex] = 0.219 mg of nickel dimethylglycoxime

290.7 g of [tex]$Ni(H_2C_4H_6O_2N_2)_2$[/tex] contains 58.7 mg of Ni

0.219 mg of [tex]$Ni(H_2C_4H_6O_2N_2)_2$[/tex] contains [tex]$\frac{0.219 \times 58.7}{290.7} = 0.0443$[/tex]  mg of Ni

So mass of nickel, m = 0.0443 mg = [tex]$0.0443 \times 10^{-3}$[/tex] g

Percent of Nickel in the alloy = [tex]$\frac{\text{mass of nickel}}{\text{mass of alloy}} \times 100$[/tex]

                                                [tex]$=\frac{0.0443 \times 10^{-3}}{0.159}\times 100$[/tex]

                                               = 0.03%

Einstein's Big Idea homepage. E = mc2. It's the world's most famous equation, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.

Answer:

- density of the cube for Caliper Method is 1.08 g/mL

- density of the cube for Liquid Displacement Method is 0.94 g/mL

Explanation:

Given the data in the question;

The cube's true density = 0.9822 g/cm³

Student's Collected Data;

Cube's Mass = 0.66g

Caliper Method

Edge Length = 0.85 cm

Liquid Displacement Method

Volume of Liquid = 5.5 mL

Volume of Liquid + Object = 6.2 mL

For Caliper Method;

Edge Length = 0.85 cm

so the volume of the cube will be ( 0.85 cm )³ OR 0.614125 cm³ ≈ 0.61 cm³ = 0.61 mL

so Density will be;

Density[tex]_{caliper[/tex] = mass of cube / volume of cube

we substitute

Density[tex]_{caliper[/tex] = 0.66g / 0.61 mL

Density[tex]_{caliper[/tex] = 1.08 g/mL

Therefore, density of the cube for Caliper Method is 1.08 g/mL

For Liquid Displacement Method;

Volume of object = total volume - volume of liquid

= 6.2 mL - 5.5 mL = 0.7 mL

now, Density of object will be;

Density[tex]_{Liquid-Displacement[/tex] = mass / volume

we substitute

Density[tex]_{Liquid-Displacement[/tex] = 0.66 g / 0.7 mL

Density[tex]_{Liquid-Displacement[/tex] = 0.942857 ≈  0.94 g/mL

Therefore, density of the cube for Liquid Displacement Method is 0.94 g/mL

Answer:

New volume = 18.33 L

Explanation:

Given that,

Initial temperature, [tex]T_1=0^{\circ} C=273.15\ K[/tex]

Initial volume, [tex]V_1=20\ L[/tex]

Final temperature, [tex]T_2=-22.8^{\circ}C=250.35\ K[/tex]

We need to find the final volume when pressure is held constant. The relation between volume and temperature is given by :

[tex]V\propto T\\\\\dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}\\\\V_2=\dfrac{V_1T_2}{T_1}\\\\V_2=\dfrac{20\times 250.35}{273.15}\\\\V_2=18.33\ L[/tex]

So, the new volume is equal to [tex]18.33\ L[/tex].

Answer:

c. product

i had the test

As 1 L = 1000 g

so 119 grams = 0.119000 L

Hope it is helpful to u

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We are given:

Mass of water: 119 grams

We know that one mole of a gas occupies 22.4L of volume

Number of moles of water:

Number of moles = given mass / Molar mass

Number of moles = 119 / 18             [molar mass of water = 18 grams/mol]

Number of moles = 6.61 moles

Volume occupied:

Volume = number of moles * 22.4 L

Volume = 6.61 * 22.4

Volume = 148L

Volume (in mL) = 1.48 * 10⁻¹ mL

Answer:

2-pentanone.

Explanation:

Hello there!

In this case, for the given compound and, in agreement with the octet rule, it is possible to realize that the CO is actually C=O as shown below:

CH3  -  C  -  CH2  -  CH2  -  CH3

            ||

           O

Thus, since the C=O stands for the carbonyl group within the parent chain, we infer this is a ketone and more specifically 2-pentanone as it has five carbon atoms.

Regards!

Answer:

0.0123 mol

Explanation:

Step 1: Convert 34.0 °C to Kelvin

We will use the following expression.

K = °C + 273.15 = 34.0 + 273.15 = 307.2 K

Step 2: Convert 148 cm³ to L

We will use the conversion factors:

[tex]148cm^{3} \times \frac{1mL}{1cm^{3}} \times \frac{1L}{1000mL} = 0.148L[/tex]

Step 3: Convert 212 kPa to atm

We will use the conversion factor 1 atm = 101.325 kPa.

212 kPa × 1 atm / 101.325 kPa = 2.09 atm

Step 4: Calculate the moles of nitrogen gas

We will use the ideal gas equation.

P × V = n × R × T

n = P × V / R × T

n = 2.09 atm × 0.148 L / (0.0821 atm.L/mol.K) × 307.2 K = 0.0123 mol

Answer:

Properties of Liquids

Capillary Action. ...

Cohesive and Adhesive Forces. ...

Contact Angles. ...

Surface Tension. ...

Unusual Properties of Water. ...

Vapor Pressure. ...

Viscosity Viscosity is another type of bulk property defined as a liquid's resistance to flow. ...

Wetting Agents

Answer:

Carbon and Oxygen cannot react to form an ionic compound because the two elements are non-metals. To form an ionic bond, a metal combines with a non-metal through electrostatic attraction of oppositely charged ions.

Answer:

Explanation:

The two that won't are C and O. They will react, but not ionically. O is on the left of the Periodic table and C is more or less in the middle. They form CO carbon Monoxide and CO2 which is Carbon Dioxide. They are just not ionic.

Answer:

By allowing the potatoes to be stored longer so they can be sold during winter months.

Explanation:

Since low energy particles are fired at the potatoes to prevent them from developing unwanted sprouts, it means that it prevents sprouts from growing on the potatoes.

Now, winter is wet period which encourages more growth of the sprouts. Thus, the way this development will affect the industry is that the potatoes will be stored for longer period and then sold in the winter.

Answer:

pOH=3.4

Explanation:

pH + pOH = 14

So if you have the pH, rearrange the equation:

14-10.6=3.4

Answer:

2 mL of Solution A must be added to Solution B to give a buffer that is equimolar.

Explanation:

 Given the data in the question;

First we determine the number of sodium acetate;  

⇒ molarity × volume ( L )

⇒ 0.16 × 2.0 mL

⇒ 0.16 × 0.002 L

⇒ 0.00032

Now, Molarity of sodium acetate = moles / Volume(L)

⇒ ( 0.00032 / 50 ) × 1000

⇒ 0.0064

Since number of moles of acetic acid that should be added tp make equimolar solution is 0.00032

and Molarity of acetic acid is 0.16 molL⁻¹

Let X represent the volume that should be added.

so;

Molarity = Moles / Volume (L)

we substitute

0.16 = (0.00032  / X) × 1000

0.16 = 32 / X

X = 0.32 / 0.16

X = 2 mL

Therefore, 2 mL of Solution A must be added to Solution B to give a buffer that is equimolar.

Explanation:

2x²=8

x²=8/2

x=√4

x=2

hope it helps.

Answer:

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[tex] {2x}^{2} = 8 \\ {x}^{2} = \frac{8}{2} \\ {x}^{2} = 4 \\ x = \sqrt{4} \\ x = 2[/tex]

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Answer:

m=103g

Explanation:

Hello there!

In this case, according to the given information, it is possible for us to say that this problem is solved by considering the concept of density, as the degree of compactness of a substance and mathematically defined as the mass divided by the volume (d=m/V). In such a way, for this problem, we solve for the mass as follows:

m=d*V

And we plug in the density and volume to obtain:

m=0.789g/mL*131mL

m=103g

Regards!

Ethanol is a common laboratory solvent and has a density of 0.789 g/ml. 103.359 g is the mass of 131 mL of ethanol.

Mass is a physical property of matter that measures the amount of substance in an object. It is typically measured in grams (g) or kilograms (kg).

To calculate the mass of 131 mL of ethanol, we need to use the density of ethanol.

Density of ethanol = 0.789 g/mL

Mass = Volume x Density

Substituting the given values, we get:

Mass = 131 mL x 0.789 g/ml

= 103.359 g

Therefore, the mass of 131 mL of ethanol is 103.359 g.

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Answer:

[tex]V_2=27.87L[/tex]

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to solve this problem by using the Charles' law a directly proportional relationship to understand the volume-temperature behavior:

[tex]\frac{V_2}{T_2} =\frac{V_1}{T_1}[/tex]

Thus, we solve for the final volume, V2, and make sure the temperature are in Kelvin as shown below:

[tex]V_2 =\frac{V_1T_2}{T_1} \\\\V_2=\frac{26.42L(92+273.15)K}{(73+273.15)K} \\\\V_2=27.87L[/tex]

Regards!

Answer:

Net number of sigma bonds = 1

Net number of pi bonds = 2

Overall bond order = 3

Explanation:

Electronic configuration of N2 ia  

1s2 2s2 2p3

There is head to head overlap in pz orbital. Thus, there is one sigma bond

Pi bond is formed whenever there is side wise overlapping. Since both px and py undergoes overlapping to form pi bond, there are two pi bonds

Bond order = 0.5 (bonding electron – antibonding electron)

= 0.5 (8-2) = 0.5*6 = 3

Answer:

Use 0.5 to indicate a fractional bond order.

σ bonds = 0.5

π bonds = 2

overall bond order = 2.5

Explanation:

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