How many Hg atoms are in 1.2mol Hg?
Plz tell me how you got it

What is the ionic charge for the chromium ion in CrP³⁺

is +6.

The ionic charge of an ion of an element in a compound is the charge the element has in that compound, as a result of the number of electrons it has donated or gained.

Metallic elements in compounds have a positive charge because they donate electrons to electronegative elements.

Non-metals have a negative charge in compounds as they accept electrons from metals.

The ionic charge of chromium ion in the CrP³⁺ is calculated as follows:

P has a cherge of - 3

Cr + (-3) = + 3

Cr = +6

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Infrared is lower frequency than visible light, and ultraviolet is higher frequency. Other forms of energy in the electromagnetic spectrum include radio waves, microwaves, and X-rays.

With a lower frequency than visible light, infrared light lies just beyond the visible light spectrum. The visible light spectrum is immediately preceded by the ultraviolet region, which has a greater frequency.

Gamma rays, X-rays, and radio waves are three other types of energy that can be found in the electromagnetic spectrum. The frequency of gamma rays is the greatest, that of X-rays is between that of gamma rays and that of ultraviolet light, and that of radio waves is the lowest.

These numerous energy types, which are all a part of the electromagnetic spectrum, provide us with a number of opportunities to view and study the cosmos.

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Answer:

See explanation

Explanation:

Extraction has to do with the separation of the components of a mixture by dissolving the mixture in a set up involving two phases. One phase is the aqueous phase (beneath) while the other is the organic phase (on top). The solvents used for the two phases must not be miscible. Water commonly is used for the aqueous phase.

Ethanol is an important solvent in chemistry but the solvent is miscible with water in all proportions. As a result of this, ethanol is a poor solvent for carrying out extraction.

Answer:

Genes are segments of DNA that contain instructions for the production of specific proteins. Proteins are the molecules that perform various functions in cells and organisms, such as providing structural support, transporting molecules, and catalyzing chemical reactions.

In the case of the hypothetical bird species, the gene that codes for the purple pigment protein is responsible for producing the purple pigment in the bird's feathers. When a random mutation occurs in this gene, it can affect the production of the pigment protein. In the case of the white bird, the mutation likely results in a non-functional protein that cannot produce the purple pigment, resulting in white feathers.

This process of genes producing proteins, which in turn determine the traits of an organism, is known as the central dogma of molecular biology. The central dogma states that genetic information flows from DNA to RNA to protein, and that the sequence of nucleotides in DNA determines the sequence of amino acids in proteins, which in turn determine the structure and function of the protein and ultimately the traits of the organism.

Explanation:

Answer:

What is the mass of 1 mole of iron atoms?

Since iron has an atomic mass of 55.847 amu, one mole of iron atoms weighs 55.847 grams.

Explanation:

Got this answer from Angelo State University website.

Answer:

Explanation:

NUMBER  ELEMENT ELECTRON CONFIGURATION

1                  Hydrogen                1\(1s^{1}\)

2                  Helium                        \(1s^{2}\)

3                  Lithium                          [Helium] \(2s^{1}\)

( ) NO + ( )O2 ------------------> ( 2)NO2

Coefficients appear to the left of the molecules

but before we have to balance the reaction.

On the right you have 1 atom of Nitrogen and 2 atoms of Oxygen = NO2

On the left side of the reation you have 1 of N and 3 of O, so we have to balance.

First look the N atoms

N -----------------------------> N

Both sides have 1 atom.

Now the problem is the Oxygen:

2 NO + 1 O2 -------------------------------------> 2 NO2

We put 2 on the right so now we have 2 N and 4 O and then on the left you have to put a 2 on the left of NO.

Now if you count the reaction is balanced.

Left: 2x1 N = 2 and 2 x 1 O = 2 (2 NO),

then 1 x 2 O = 2 (1 O2)

In left we have a total of 2 Nitrogen and 4 Oxygen

Right of the reaction:

2 x 1 N = 2

2 x 2 O = 4

Now the answer is 2,1,2

Answer:

Explanation:

It's simple train track method of cancelling out units.

If we read the balanced equation as this: 2 dm3 of octane reacts to form 16 dm3 of CO2 then how much CO2 is produced by 1 dm3?

Would you agree that it would be half of 16?

\(\frac{2dm3}{16 CO2} = \frac{1dm3}{?CO2}\)

Cross multiply and solve for ?, you get 8.

Answer:

Explanation:

Sorry, I don't really know about this. I hope it helps!

Answer:

b. NAD+

Explanation:

Aldehydes are oxidized to carboxylic acids in the presence of strong oxidizing agents.

In a biochemical system, the same oxidation reaction occurs by the help of the enzyme alcohol dehydrogenase and NAD+ which is a biological oxidizing agent.

NAD+ is an effective biological oxidizing agent that accepts electrons from molecules and change to its reduced form NADH, which is an effective biological reducing agent that donates electrons. Electron transfer processes are the main functions of NAD+.

Answer:

ΔG° = -1.45 × 10⁵ J

Explanation:

Step 1: Given data

Step 2: Calculate the standard Gibbs free energy change (ΔG°)

We will use the following expression.

ΔG° = -n × F × E°cell

ΔG° = -1 mol e⁻ × 96,485 C/mol e⁻ × 1.50 V

ΔG° = -1.45 × 10⁵ J

By apply Gibbs's free energy, the value of delta G is equal to -144727.5 Joules.

Given the following data:

To determine the value of delta G, we would apply Gibbs's free energy:

Mathematically, Gibbs's free energy is given by the formula:

\(\Delta G^\circ = -nFE^{ \circ}_{cell}\)

Where:

Substituting the given parameters into the formula, we have;

\(\Delta G^\circ = -1 \times 96485 \times 1.50\)

\(\Delta G^\circ = -144727.5\)

Delta G = -144727.5 Joules

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Answer:

We will not have a reaction.

Explanation:

The alcohol 2-methylhexan-2-ol its a tertiary alcohol. Additionally, the reaction of \(K_2Cr_2O_7\)  and acid medium will produce chromic acid \(H_2Cr_2O_7\)   with the following reaction:

\(K_2Cr_2O_7~+~2H^+->~H_2Cr_2O_7~+~2K^+\)

Chromic acid is a strong oxidant, so an oxidation-reduction reaction will take place. But, in this case. we have tertiary alcohol (see figure 1). Primary alcohols are oxidized to aldehydes and aldehydes are oxidized to carboxylic acids. Secondary alcohols are oxidized to ketones and tertiary alcohols can not be oxidized due to the lack of hydrogens on the carbon that is bonded to the "OH" group.

Therefore we will have no reaction.

I hope it helps!

Answer:

only god knows

Explanation:

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Answer:

Covalent Molecule

Explanation:

Answer:

b, c, e

Explanation:

Inorganic compounds usually lack carbon.

Inorganic compounds are not associated with or made from living things.

Inorganic compounds include salt and water​.

Answer:

yes the answer id bce

Explanation:

As a result, the silver atomic radius in an FCC crystal lattice is roughly 1.44 angstroms.

There are 6 atoms in each unit cell of the hexagonal closest packed (HCP), which has a coordination number of 12. Four atoms make up each unit cell of the face-centered cubic (FCC), which has a coordination number of 12.

The following equation can be used to connect the silver crystal's density to its atomic radius (r) and molar mass (M):

density = (4 x M) / [(a)³ x Avogadro's number]

For FCC unit cells, the length of one edge (a) is related to the atomic radius (r) by the following equation: a = 2^(1/2) * r

Substituting this expression for a into the density equation and solving for r, we get:

r = [(3 x M) / (32 x density x pi)]^(1/3)

where pi is the mathematical constant, pi.

The molar mass of silver is approximately 107.87 g/mol.

Substituting the given values into the equation, we get:

r = [(3 x 107.87 g/mol) / (32 x 10.6 g/cm³ x pi)]^(1/3)

= 1.44 angstroms (rounded to two significant figures)

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There are two atoms with mass numbers of 2 best describes the mass numbers of the atoms in the reaction

The sum of protons and neutrons in an atomic nucleus is known as the mass number, often known as the atomic mass number or nucleon number. It roughly equates to the atom's atomic mass given in atomic mass units.

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Answer:

CxHy+(x+y/4)O2‐>xO2+y/2H2O

Explanation:

mole ratio is equivalent to the volume ratio

The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.

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Answer:

8

Explanation:

The temperature of the mixture will be approximately 32°C.

To determine the final temperature of the mixture, we can use the principle of conservation of energy. The energy gained or lost by a substance can be calculated using the equation:

Q = m * c * ΔT

where:
Q = heat energy gained or lost
m = mass of the substance
c = specific heat capacity of the substance
ΔT = change in temperature

Let's calculate the heat energy gained or lost by each component separately and then equate them to find the final temperature.

For ice:
m_ice = 40 g
c_ice = 2.09 J/g°C (specific heat capacity of ice)
ΔT_ice = final temperature - 0°C (change in temperature)

Q_ice = m_ice * c_ice * ΔT_ice

For water:
m_water = 80 g
c_water = 4.18 J/g°C (specific heat capacity of water)
ΔT_water = final temperature - 40°C (change in temperature)

Q_water = m_water * c_water * ΔT_water

According to the principle of conservation of energy, the heat lost by the water will be equal to the heat gained by the ice:

Q_water = -Q_ice

Now let's substitute the respective values and solve for the final temperature:

m_water * c_water * ΔT_water = -m_ice * c_ice * ΔT_ice

80 g * 4.18 J/g°C * (final temperature - 40°C) = -40 g * 2.09 J/g°C * (final temperature - 0°C)

Simplifying the equation:

334.4 * (final temperature - 40) = -83.6 * final temperature

334.4 * final temperature - 13376 = -83.6 * final temperature

334.4 * final temperature + 83.6 * final temperature = 13376

418 * final temperature = 13376

final temperature = 13376 / 418

final temperature ≈ 32°C

Therefore, the temperature of the mixture will be approximately 32°C.

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Answer:

f=ma

40=m*8

m=5kg

another object of same mass is added

=>m=5+5=10kg

f=10*8=80N

Explanation:

Answer:

I hope it's right.

answer 41

0.294kg is mass (in kg) that 4.64 moles of Copper have.

The unit of material quantity in the International System of Units is the mole (SI). A substance's quantity determines how many elementary entities of that substance are contained in an object or sample. The number of elementary entities in a mole is precisely 6.02214076 × 10²³.

The amount of a substance in a mole is determined by the mass of a mole of that substance divided by the mass of the substance given in a chemical reaction. The term is also used to express concentration measurements like mole per litre and molecular weight.

m= n × MM

m is mass in grams; n is moles & MM is molecular mass

The molecular mass of copper is 63.546.

We now have all the required information to perform the calculation

m= 4.64 × 63.546

m= 294 g

= 0.294kg

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Answer: A

Explanation: not sure what to say but it’s for sure A it makes sense :) good luck !

The statement best explains why an object appears green in sunlight is (D) More green light is reflected while more red and blue light is absorbed.Hence the correct option is (D).

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.

Common examples include the reflection of light, sound and water waves.

Colored objects look the way they do because of reflected light. When sunlight is shined on a green leaf, the violet, red and orange wavelengths are absorbed. The reflected wavelengths appear green.

Therefore, The statement best explains why an object appears green in sunlight is (D) More green light is reflected while more red and blue light is absorbed.Hence the correct option is (D).

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Answer:

true fats; triglycerides

Explanation:

Answer:

The granite block transferred 4080 joules of energy, and the mass of the water is 35.84 grams.

Explanation:

The equation needed to answer both parts of the question is:

Q = mcΔT

In this equation,

-----> Q = energy/heat (J)

-----> m = mass (g)

-----> c = specific heat (J/g°C)

-----> ΔT = change in temperature (°C)

Part #1:

First, you need to find the energy transferred from granite block using the previous equation. You have been given the mass, specific heat, and change in temperature.

Q = ? J                            c = 0.795 J/g°C

m = 126.1 g                     ΔT = 92.6 °C - 51.9 °C = 40.7 °C

Q = mcΔT

Q = (126.1 g)(0.795 J/g°C)(40.7 )

Q = 4080

Part #2:

Secondly, using the energy calculated in Part #1, you need to calculate the mass of the water. You have calculated the energy transferred, and have been given the specific heat and change in temperature.

Q = 4080 J                     c = 4.186 J/g°C

m = ? g                            ΔT = 51.9 °C - 24.7 °C = 27.2 °C

Q = mcΔT

4080 J = m(4.186 J/g°C)(27.2 °C)

4080 J = m(113.8592)

35.84 = m

Answer: blank 1: 4,080 joules

Blank 2: 35.8 grams

Explanation: