CompoundElectronegativity Difference CO0.89 NaCl2.23 NO0.04 CaBr1.96 Which compound is most likely to be held together by a covalent bond based on the electronegativity difference between its two atoms?

Answer:

Steel often melts at around 1370 degrees C (2500°F)."

Explanation:

your welcome

Answer:

Steel often melts at around 1370 degrees C (2500°F)."

Explanation:

Answer:

Explanation:

sunlight

soil

water

sugar

carbon dioxide

minerals

leaves

vitamins

Answer:335.07

Explanation:

Answer:

Pretty sure it's 175.82 grams, sorry if it's wrong!

The name of the organic compound is 2-methyl pentane. The given organic compound is a five-carbon system with a substitution at the C-2 carbon. The naming of an organic compound is done according to the rules given by IUPAC.

The given organic compound has 5 carbon in its main chain. So It has the root word Pent. Since, all the bonds are single bonds, the organic compound is saturated, hence it has the suffix -ane. Hence the unsubstituted straight chain is pentane.

Numbering is done from right to left, because when the numbering is from right to left, the substituted carbon gets C-2, when it is numbered from left to right, the substituted carbon gets C-4. So the numbering is from the right and the substituted carbon is C-2. The substituent is a single carbon system, a methyl substituent. So the organic compound is named 2-methyl pentane .

Learn more about naming of organic compounds here,

https://brainly.com/question/27843604?

Answer:

B) heterotrophs

Explanation:

hetero meaning other or different from its own species

Answer:

Answer:

♡ hi fairy ♡

-- the answer is heterotrophs

~ madeline ✧･ﾟ: *✧･ *:･ﾟ✧*

Explanation:

Answer:

Tellurium

Explanation:

Technetium's position on the periodic table is 43 and Tellurium's is 52

Answer:

biggest problem with mainstream renewable energy is intermittency.

Answer:

the biggest problem with mainstream renewable energy is intermittency.

Wind power is only generated when it's windy.

Solar power is only generated when it's sunny.

This creates several fundamental issues.

The atomic mass of an element is its average atomic mass given in atomic mass units (amu, also known as daltons, D). The atomic mass, which is a weighted average of all the isotopes of that element, is calculated by multiplying the mass of each isotope by its abundance.

Calculate the average atomic mass of magnesium in nature.

24.31 is the average atomic mass of Magnesium in nature.

The ratio of neutrons to protons varies among isotopes, even though they all come from the same family of elements. The quantity of protons an element has affects its atomic number on the Periodic Table.

The information supplied indicates that

The sum of the relative abundance percentages of each isotope is the atomic mass. Therefore

Mg's atomic mass = (23.98×78.6)+(24.98×10.11)+(25.98×11.29)/100

Mg's atomic mass = 18.85+2.53+2.93 = 24.31

To know more about average atomic mass , click on the link below:

https://brainly.com/question/28768877

#SPJ4

The average atomic mass of an element, expressed in atomic mass units, is the element's atomic mass (amu, also known as daltons, D). The mass of each isotope is multiplied by its abundance to determine the atomic mass, which is a weighted average of all the isotopes of that element.

Magnesium has an average atomic mass of 24.31.

Despite belonging to the same family of elements, isotopes differ in the ratio of neutrons to protons. An element's atomic number on the Periodic Table is influenced by how many protons it contains.

The atomic mass is equal to the sum of the relative abundance percentages of each isotope. Thus, the atomic mass of magnesium

To know more Atomic Mass visit:

https://brainly.com/question/17067547

#SPJ4

The values of x and (100 - 4.67 - x), which represent the natural abundances of 28Si and 30Si, respectively.

To find the natural abundances of 28Si and 30Si, we need to consider the atomic mass and the natural abundance of 29Si.

Given:

Atomic mass of silicon (28Si) = 28.0855 amu

Mass of 29Si = 27.9769 amu

Mass of 30Si = 28.9765 amu

Natural abundance of 29Si = 4.67%

Let's denote the natural abundance of 28Si as x (in percentage). Since the sum of the natural abundances should be 100%, the natural abundance of 30Si can be calculated as (100% - 4.67% - x).

To calculate the atomic mass, we multiply the mass of each isotope by its natural abundance and sum the values:

(28Si atomic mass) = (mass of 28Si) x (natural abundance of 28Si) + (mass of 29Si) x (natural abundance of 29Si) + (mass of 30Si) x (natural abundance of 30Si)

28.0855 = (28.0855) x (x/100) + (27.9769) x (4.67/100) + (28.9765) x [(100 - 4.67 - x)/100]

Solving this equation will yield the values of x and (100 - 4.67 - x), which represent the natural abundances of 28Si and 30Si, respectively.

for more questions abundances

https://brainly.com/question/24873591
#SPJ11

Note- The complete question is

A sample of naturally occurring silicon consists of three isotopes: 29Si (atomic mass unit = 27.9769), 29Si (atomic mass unit = 28.9765), and 30Si (atomic mass unit = 29.9738). The atomic mass of silicon is 28.0855. Given that the natural abundance of 29Si is 4.67%, what are the abundances of 28Si and 30Si?

Answer:

the phenotype of the offspring will be pink

Answer:

186,000 m/s

Explanation:

If you divide 744,000 by 4 seconds you get 186,000 m/s since it can travel that far in 4 seconds

Answer:

186000

Explanation:

speed = distance/time

so the answer is 744000/4

= 186000 miles per second

Answer: The combination of 100 mL of 1.0 M CH3NH2 and 100 mL of 0.50 M CH3NH3 would result in a buffer solution.

Explanation:

A buffer solution is a solution that can resist changes in pH upon the addition of an acid or a base. To form a buffer solution, we need a weak acid (or base) and its conjugate base (or acid) in similar concentrations.

Option 1: 100 mL of 1.0 M HCl and 50.0 mL of 1.0 M NaCl

This is not a buffer solution because HCl is a strong acid and NaCl is a neutral salt, which does not have an acidic or basic effect on the solution.

Option 2: 100 mL of 1.0 M HNO2 and 100 mL of 2.0 M NaNO2

This is not a buffer solution because HNO2 is a weak acid, but NaNO2 is not its conjugate base. Instead, NaNO2 hydrolyzes to form NaOH and HNO2, which decreases the buffer capacity.

Option 3: 100 mL of 1.0 M CH3NH2 and 100 mL of 0.50 M CH3NH3

This is a buffer solution because CH3NH2 is a weak base and CH3NH3+ is its conjugate acid. They are in similar concentrations, and therefore, can resist changes in pH upon the addition of an acid or a base.

Option 4: 100 mL of 1.0 M HF and 50.0 mL of 1.0 M HClO

This is not a buffer solution because HF is a weak acid, but HClO is not its conjugate base. Instead, HClO hydrolyzes to form H3O+ and ClO-, which decreases the buffer capacity.

Answer:

Fabric is made of cotton.

Explanation:

Hope that helps :)

Answer:

Hey mate your answer is

cotton

hope it helps you

mark as brainlist

Option A is the way of representing concentration that the hydrogeologist should employ to describe the density of lead in the water.

Ppm or ppb. The following details should be taken into account Ppm stands for parts per million. Ppb stands for parts per billion. • We know that one part in a million equals one part in a billion. • The same method should be employed for water concentration. 1 Water concentrations can also be expressed in fractions of a million (ppm) or parts for every billion (parts per billion) (ppb). This relationship can be used to convert between parts per million and parts per billion: 1 part in a thousand equals 1,000 parts in a billion.

Learn more about concentrations here:

https://brainly.com/question/10725862

#SPJ4

The complete question is:

Which method of expressing concentration should the hydrologist use to describe the concentration of lead in the water?

A) ppm or ppb

B) volume percent

C) mass-volume percent

D) mass percent

At equilibrium, the concentrations of \(H_{3} O+, C_{6} H_{5}COO\)-, and \(C_{6} H_{5}COO\) in the solution will be 0.038 M, 0.038 M, and 0.012 M, respectively.

First, we can write the chemical equation for the dissociation of benzoic acid in water as follows:  \(C_{6}H5COOH + H_{2}O\) ⇌\(C_{6}H_{5}COO- + H_{3}O\)

The acid dissociation constant, Ka, is given as 6.3 × 10^-5.

\(Ka = [C_{6}H_{5}COO-][H_{3}O+] / [C_{6}H_{5}COOH]\)

We can assume that the initial concentration of \(C_{6}H_{5}COOH\) is equal to its concentration at equilibrium, x. Thus, at equilibrium:

\([C_{6}H_{5}COOH] = x M \\\)

\([C_{6}H_{5}COO-] = y M \\\)

\([H_{3}O+] = y M\\\)

Using the equilibrium expression and the given value of Ka, we can solve for the values of x and y:

\(Ka = [C_{6}H_{5}COO-][H_{3}O+] / [C_{6}H_{5}COOH]\\6.3 * 10^-5 = y^2 / x\)

Since we know that the initial concentration of benzoic acid is 0.050 M, we can write: \(x + y = 0.050 M\)

Now we have two equations and two unknowns. Solving for x and y:

\(x = 0.012 M\\y = 0.038 M\)

To know more about equilibrium, here

brainly.com/question/30807709

#SPJ4

Answer:

to increase their number of species on the Earth and want to go long and long

The final temperature of the copper, initially at 25°C, when it absorbs 7.880 kJ is (a) 623°C.

To find the final temperature of the copper, you can use the equation:

q = mcΔT

where q is the heat absorbed (in Joules), m is the mass of the copper (in grams), c is the specific heat of copper (in J/(g•°C)), and ΔT is the change in temperature (final temperature - initial temperature).

First, convert the absorbed heat from kJ to J:

7.880 kJ * 1000 J/1 kJ = 7880 J

Now, plug the given values into the equation:

7880 J = (34.2 g)(0.385 J/(g•°C))(ΔT)

Next, divide both sides by (34.2 g)(0.385 J/(g•°C)):

ΔT = 7880 J / (34.2 g)(0.385 J/(g•°C)) = 598°C

Since ΔT = final temperature - initial temperature, we can find the final temperature:

Final temperature = ΔT + initial temperature = 598°C + 25°C = 623°C

So, the final temperature of the copper will be (a) 623°C.

Learn more about specific heat here: https://brainly.com/question/21406849

#SPJ11

Answer:

I think its option C

Explanation:

Answer:

C. Hydrocarbons

Explanation:

I think it is C

Answer:

bromine

Explanation:

Answer:

Explanation:

To show the reactants and products, write the imbalanced equation.

Calculate the number of atoms of each element on each side of the reaction arrow.

To make the number of atoms of each element the same on both sides of the equation, multiply coefficients (the numbers in front of the formulas). ...

Check your work by indicating the state of matter of the reactants and products.

Out of the options given, only nitric acid (HNO3) is capable of oxidizing copper metal to Cu2+ ions

Copper metal (Cu) is a good reducing agent, meaning that it can readily lose electrons and be oxidized to a higher oxidation state. In the presence of an oxidizing agent, copper can undergo an oxidation-reduction reaction to form copper ions (Cu2+).

Nitric acid (HNO3) is a strong oxidizing agent that is capable of oxidizing a wide range of substances, including metals such as copper. In the presence of HNO3, copper metal reacts to form copper nitrate (Cu(NO3)2) and nitrogen dioxide (NO2) gas, according to the following equation:

Cu(s) + 4 HNO3(aq) → Cu(NO3)2(aq) + 2 NO2(g) + 2 H2O(l)

The nitrogen dioxide gas produced in this reaction is visible as a reddish-brown gas.

On the other hand, sodium hydroxide (NaOH) is a strong base that is not an oxidizing agent, and it will not react with copper to form copper ions. Hydrochloric acid (HCl) is a strong acid that can react with copper to form copper chloride (CuCl2), but it is not an oxidizing agent and will not form Cu2+ ions.

Learn more about reducing agents

brainly.com/question/2890416

#SPJ11

Atomic mass refers to the mass of an atom, typically expressed in atomic mass units (AMU). It is a measure of the total mass of protons, neutrons, and electrons present in an atom. The correct answer choice is 0.694 g.

The atomic mass of an element is listed on the periodic table and is calculated as the weighted average of the masses of its naturally occurring isotopes. Isotopes are atoms of the same element that have different numbers of neutrons.

To determine the mass of 0.100 moles of lithium, we need to use the molar mass of lithium (Li). The molar mass is the mass of one mole of a substance and is equal to the atomic mass of the element.

The atomic mass of lithium (Li) is approximately 6.94 g/mol.

To calculate the mass of 0.100 moles of lithium, we can use the following equation:

Mass = Molar mass × Number of moles

Mass = 6.94 g/mol × 0.100 mol

Mass = 0.694 g

Therefore, the correct answer choice is 0.694 g.

For more details regarding atomic mass, visit:

https://brainly.com/question/29117302

#SPJ12

The solution's molarity would be 2.87M. The solution has a density of 1.075 and contains 10.00% by mass of HCl.

Given that the density of glucose is 1.049 g/ml, its mass per liter is 1049g/L, which is equal to

1049 10/100 = 104.9 g.

Now, if we plug the numbers for the mass and volume, we obtain the following: molar mass of

HCl = 36.46 g/mol

moles= mass/molar mass

= 104.9/36.46

= 2.87 moles.

Now,

molarity = moles/volume

= 2.87/1

= 2.87 M

A solute's concentration in a solution, specifically the amount of it per unit volume of solution, is measured by its molar concentration, which is a chemical word. The number of moles per liter, denoted by the unit symbol mol/L in chemistry or mol/dm3 in SI units, is the most often used unit for molarity.

To know more about molarity visit,

brainly.com/question/8732513

#SPJ4

Answer:

A)

Explanation:

Unit Test Edg 2020

True. Do not use oil-based products such as Vaseline and body lotions because they destroy latex. Latex is a natural rubber, and when it comes into contact with oil-based products, it reacts chemically.

This reaction causes latex to degrade and lose its elasticity, making it prone to breakage. Therefore, it is important to avoid oil-based products when using latex products, such as condoms, gloves, and other medical supplies. Instead, use water-based products that are safe to use with latex. Water-based products are gentle on the skin and do not react chemically with latex, making them ideal for use with latex products.

learn more about chemically

https://brainly.com/question/12145141

#SPJ11

At 500 K, the equilibrium constant `K_p` for the gas-phase thermal decomposition of tert-butyl chloride is 3.45.

A chemical reaction proceeds in both forward and backward directions. At some point in time, the rate of forward and backward reaction becomes equal.

At this stage, the system is said to be in a state of equilibrium. When the concentration of products and reactants no longer changes, the reaction is said to have reached equilibrium.

Constant is the term that is used for the ratio of the concentrations of products to the concentrations of reactants at equilibrium.

This ratio is also called the Equilibrium Constant `(K)`. It is only used for reversible reactions and its value changes with changes in temperature.

What is the formula of Equilibrium Constant `K_p`?Equilibrium Constant `K_p` is defined as the ratio of the partial pressures of products and reactants when the reaction reaches equilibrium.

Mathematically, it is given as:`K_p = (P_A)^a * (P_B)^b / (P_C)^c * (P_D)^d`where `A` and `B` are products and `C` and `D` are reactants. `a`, `b`, `c` and `d` are the respective coefficients in the balanced chemical equation. `P` is the partial pressure of the given substance.Given equation for the thermal decomposition of tert-butyl chloride:`(CH3)3CCl(g) ⇌ (CH3)2C=CH2(g) + HCl(g)`

The Equilibrium constant `K_p` of the given equation at 500K is given as:`K_p = 3.45`

Learn more about reaction click here:

https://brainly.com/question/11231920

#SPJ11

Answer:

Ken is planting vegetables in his garden. He has 20 seeds. Determine whether 20 is prime or composite number. If it is composite, list all of the ways Ken can arrange the seeds in even rows.