Covalent bonding involves the sharing of electrons to create a full valence shell, and
occurs between nonmetals.
True
False

Answers

Answer 1
True. Covalent bonds involve sharing electrons to create a full valence shell.
Answer 2
The answer is: true
<3

Related Questions

Which types of particles are involved in a fission reaction?

A neutral neutron strikes a large neutral nucleus.

A positive proton strikes a large positive nucleus.

A neutral neutron strikes a large positive nucleus.

A positive proton strikes a large neutral nucleus.

Answers

The first one a neutral neutron strikes a large neutral nucleus

10. Boron has two naturally occurring isotopes, 10B with an atomic mass of 10.0129370amu and 11Bwith an atomic mass of 11.0093054amu. The atomic mass of boron is 10.81 (from the periodic table). The percent abundances of the boron isotopes are __________% 10Band __________% 11B.

Answers

Explanation:

allowing 20% discount on the market price of a watch the value of the watch will be rs 2376 when a VAT of 10% is added ,find it's market price

What is the equilibrium constant K at 25°C for an electrochemical cell when E° = +0.0140 V and n = 2?(F = 96,500 J/(V・mol), R = 8.314 J/(mol・K))

Answers

The equilibrium constant of the electriochmeical cell as shown is  2.976.

What is the equilibrium constant?

The equilibrium constant of a reaction shows the extent of the conversion of the reactants to products.

Now we know that;

ΔG = -nFE°cell

n = 2

F = 96,500 J/(V・mol)

E°cell = +0.0140 V

ΔG = -(2 *  96,500  * 0.0140)

ΔG = -2702 J

But;

ΔG = -RTlnK

lnK = -(ΔG/RT)

K = e^[-(ΔG/RT))

K = e^[-(( -2702)/8.314 * 298]

K = 2.976

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Which unit is used to measure the distance between galaxies? Question 3 options: kilometers decades years light years

Answers

Answer:

light years

Explanation:

light year is the DISTANCE light travels in one year ...a very large distance

Answer:

light years

Explanation:

since distance between galaxy space ,objects .

Calculate AHræn for the following reaction
2 AX (g) + 7 BY (g) →4AY (g) + 6 BX (g)
Use the following AHformation values for AX, BY, AY and BX
AX: AHformation = -80 kJ/mol
BY: AH formation = 57 kJ/mol
AY: AHformation = -379 kJ/mol
BX: AHformation = -251 kJ/mol

Answers

Answer:

60ax 70by 67ay ah251

Explanation:

HELP ME OUT PLS!!!!!!!!!

All stars begin their life in a

O black hole

O main sequence

O protostar

O nebula​

Answers

Answer:

nebula

Explanation:

I am well informed

What is the electrical conductivity of Copper and Glass?

Please help

Answers

Answer:

Table of Resistivity and Conductivity at 20°C

Material ρ (Ω•m) at 20 °C Resistivity σ (S/m) at 20 °C Conductivity

Deionized water 1.8×105 5.5×10−6

Glass 10×1010 to 10×1014 10−11 to 10−15

Explanation:

Table of Resistivity and Conductivity at 20°C

Material ρ (Ω•m) at 20 °C Resistivity σ (S/m) at 20 °C Conductivity

Deionized water 1.8×105 5.5×10−6

Glass 10×1010 to 10×1014 10−11 to 10−15

Determine the empirical formula of a compound containing 48.38 grams of carbon, 8.12 grams of hydrogen, and 53.5 grams of oxygen

Answers

As with most stoichiometry problems, it is necessary to work in moles. The ratio of the moles of each element will provide the ratio of the atoms of each element.

Get the mass of each element by assuming a certain overall mass for the sample (100 g is a good mass to assume when working with percentages).

Remeber that percentages are a ratio multiplied by 100. You must convert percentages back to their decimal value before working with them.

(.4838) (100 g) = 48.38 g C

(.0812 ) (100 g) = 8.12 g H

(.5350) (100 g) = 53.38 g O

Convert the mass of each element to moles of each element using the atomic masses.

(48.38 g C) (1 mol/ 12.10 g C) = 4.028 mol C

(8.12 g H) (1 mol/ 1.008 g H) = 8.056 mol H

(53.38 g O) (1 mol/ 16.00 g O) = 3.336 mol O

Find the ratio or the moles of each element by dividing the number of moles of each by the smallest number of moles.

Use the mole ratio to write the empirical formula.

Consider the following reaction where Kc = 55.6 at 698 K.

H2(g) + I2(g) 2HI(g)

A reaction mixture was found to contain 2.29×10-2 moles of H2(g), 3.80×10-2 moles of I2(g) and 0.254 moles of HI(g), in a 1.00 liter container.

Is the reaction at equilibrium?
If not, what direction must it run in order to reach equilibrium?

The reaction quotient, Qc, equals
.

The reactionfill in the blank 2

A. must run in the forward direction to reach equilibrium.
B. must run in the reverse direction to reach equilibrium.
C. is at equilibrium.

Answers

Answer:

B

No the reaction is not at equilibrium

The reaction must run to the left (reactants) to reach equilibrium

Qc = 74.14

Explanation:

Qc = (0.254)^2 / ((2.29 x 10-2)(3.8 x 10-2))

Qc = 74.14

74.14 > 55.6

Qc > Kc

...................................................

Answers

Explanation:

I honestly don't understand why you post useless questiond

Why is it important for scientist to be objective when using the design process like the scientific method when doing there investigations?

Answers

Answer:

Scientists use the scientific method to make testable explanations and predictions about the world. A scientist asks a question and develops an experiment, or set of experiments, to answer that question. Engineers use the engineering design process to create solutions to problems.

Determine the longest wavelength of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in K is 1.76 × 103 kJ/mol. A. 113 nm B. 885 nm C. 68.0 nm D. 147 nm E. 387 nm

Answers

Answer:

The wavelength of light is 68 nm.

Explanation:

Given data:

Binding energy of electron = 176 × 10³ Kj/ mol or (1.76× 10⁶ j/mol)

Wavelength of light require to remove the electron = ?

calculate, a can of chicken broth contains 450 mg of sodium chloride in 240.0g of broth. What is the percent by mass of sodium chloride in the broth?

Answers

Answer:

The percent by mass of sodium chloride in the broth is 0.1875 %

Explanation:

Our first step is transforming the sodium chloride figure from mg to g

450mg x 1g/1000 mg= 0.45g

Now, we must calculate the percentage by using the following formula:

0.45g / 240g x 100= 0.1875%

Henceforth, we can conclude that the percentage by mass of sodium chloride in the broth is 0.1875%

The per cent by mass of sodium chloride in the broth is 0.1875 %

What is per cent by mass?

The mass per cent of a component of a compound is the percentage ratio of the mass of the component by the total mass of the compound. The formula is mass per cent = (mass of component / total mass of compound) × 100.

Given data:

Mass of sodium chloride =450 mg = 0.45g

Now, we must calculate the percentage by using the following formula:

[tex]\frac{0.45gX 100}{240g }[/tex]

= 0.1875%

Hence, we can conclude that the percentage by mass of sodium chloride in the broth is 0.1875%

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Which type of covalent bond is the least stable?
A.Covalent bonds
B.Double bonds
C.Single bonds
D.Triple Bonds

Answers

Answer:

D because: A Triple bond is when three pairs of electrons are shared between two atoms in a molecule. It is the least stable out of the three general types of covalent bonds.

Identify the type of energy conversion represented by each picture.
solar energy to light energy
electric energy to light energy
electric energy to heat energy
wind energy to electric energy

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

The given pictures show conversion of energy from one form to another.

#Picture 1

Electric energy to Heat energy

#Picture 2

Wind energy to electric energy

#Picture 3

Solar energy to light energy

#Picture 4

Electric energy to light energy

How many Si atoms are there in 1.00 g of silicon

Answers

Number of atoms in 1 g of silicon are 6.022 * 10^23

If the actual yield for a substance is 39.487g but the theoretical yield is 38.000g, what is
the percent yield?
a. 2%
b. 96%
c. 50%
d. 104%

Answers

Answer:

b. 96%

Explanation:

A manometer measures 450 torr of pressure in a container with 0.500-L sample of carbon dioxide, CO2. The gas is compressed to a volume of 0.100 L. What is the new pressure reading in the manometer?

Answers

Let's see

Apply boyles law

P1V1=P2V2450(0.5)=0.1P_2225=0.1P_2P_2=2250Torr

Which substance will hold its shape?

plasma
liquid
gas
solid

Answers

Answer:

solid

Explanation:

plasma = no

liquid= shapes is container it is in

gas = shaped to container also

Question 4 of 15
The types of radiation produced by alpha, beta, and gamma decay differ in
many ways. Which characteristic do they all have in common?
A. The ability to treat cancer
B. The ability to cause cancer
C. The ability to trace the movement of chemicals
D. The ability to damage human tissue

Answers

Answer:

D. The ability to damage human tissue

please give me brainliest.

PLEASE QUICKLY HELP:)

which entry-level job would give you the best experience for a career in the lodging sector?

Choose one answer correctly!

A. Hostess
B. Réservation agent
C. Sever
D. Tour guide​

Answers

Answer:

i think Hostess but id K a lodging sector is an The hospitality industry encompasses a wide range of services and activities such as lodging, restaurants, food services, and convention centers. The lodging sector consists of hotels, motels, resorts, and bed and breakfasts.

Explanation:


Reactivity Series
Iron, tin and zinc all react with dilute hydrochloric acid to produce hydrogen.
Plan an experiment to determine the order of reactivity of iron, tin and zinc.
You are provided with powdered samples of the metals and common laboratory apparatus.

Answers

Answer:

Measuring electode potential

Explanation:

Make an electrode of all of them and measure standard reductive potential metals with lower srp will be more reactive

The metals which are placed above the hydrogen in the reactivty series can produce hydrogen gas with HCl. The order of reactivity of given metals is as follows: Zinc > iron > tin.

What is reactivity series?

The reactivity series of elements or the activity series can be defined as the arrangement of metals in descending order according to their reactivities.

The metals placed at the top of the activity series are strong reducing agents and can be readily oxidized. These metals readily tarnish/corrode. The reducing ability becomes weaker while moving down the reactivity series.

The electropositivity of the elements decreases as we move down in the reactivity series of metals. All metals which are placed above hydrogen in the activity series can able to release hydrogen gas upon reacting with dilute HCl.

Therefore, the metals Iron, tin, and zinc release hydrogen gas when they react with the HCl. The order of reactivity is according to their reduction potential which is Zinc > iron > tin.

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Calculate the pH of the following aqueous solution:
0.35 M NaF (pKa for HF = 3.14)

I'm pretty sure I know how to calculate the pH by itself, but I am confused on how to get the equation. I'm not sure what HF has to do with this, other than it's an acid. I'm probably overthinking it because it's worded differently. Thanks in advance!​

Answers

The pH of an aqueous solution that has a concentration of 0.35 M NaF and pKa for HF = 3.14 is 3.6.

How to calculate pH?

The pH of a solution refers to the degree of acidity or alkalinity of the solution. It can be calculated using the Henderson-Hasselbalch Equation as follows:

pH = pka + log ([A-]/[HA])

Where;

A- = conjugate baseHA = weak acid

pH = pKa + log([F-]/[HF])

pH = 3.14 + log(1/0.35)

pH = 3.14 + 0.4559 = 3.595

Therefore, the pH of an aqueous solution that has a concentration of 0.35 M NaF and pKa for HF = 3.14 is 3.6.

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is mixing water and glue a chemical or physical change?

Answers

Answer:

physical

Explanation:

because it would still remain as a liquid. if you were to add borax or something to it, then it would be a chemical change.

What is the molarity of a solution made by adding 1.565 moles of
PbNO3 to 0.500 L?
300. M
31.3 M
3.13 M
1.56 M

Answers

Answer:

3.13M

Explanation:

Using the Molaitry equation ( M = n/v ) just plug numbers in and solve.

Which of the following are true about photosynthesis and cellular respiration. (Select all that apply.)


The products of one process are the reactants of the other.


The relationship between them enables life to survive as we know it.


They both happen only in plants.


They both take place in human cells.

Answers

Answer:

2 and 4 are the best answers

Explanation:

Answer:

A and B

Explanation:

Took the k12 test.

8. Thermal Energy is?
A. Kinetic
B. Potential
c. Potential and Kinetic
D. Neither Potential and Kinetic

Answers

Thermal energy is the sum of the kinetic and potential energy of all the particles in an object. The figure shows that if either potential or kinetic energy increases, thermal energy increases.

hope it really helps...!!!

a 21.0 kg rock rests on the edge of a cliff 32.0 m high. how much gravitational potential energy does the rock have

Answers

Explanation:

Formula for Potential energy=mgh mass* gravity*height

21kg × 10 ×32=6720joules

If a 21.0 kg rock rests on the edge of a cliff 32.0 m high, the gravitational potential energy gained by the rock would be 6585.6 Joules.

What is mechanical energy?

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy.

As given in the problem a 21.0 kg rock rests on the edge of a cliff 32.0 m high, then we have to calculate the potential energy gained by the rock,

The potential energy of the rock = 21 × 9.8 × 32

                                                      = 6585.6 Joules.

Thus ,If a 21.0 kg rock rests on the edge of a cliff 32.0 m high, the gravitational potential energy gained by the rock would be 6585.6 Joules.

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A lab technician determines the boiling point elevation of an aqueous solution of a nonvolatile, nonelectrolyte to be 1.12 C. What is the solution’s molality?

Answers

Answer:

2.19m

Explanation:

quizlet

Which mixture would be easiest to separate based on the size of the particles?
A.
oil and water
B.
vinegar and water
C.
sand and gravel
D.
sugar and water

Answers

Answer:

i believe sand and gravel because you can sift the sand

Explanation:

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