10 advantages of atomic absorption spectrometer over flame photometer​

Answer

The new pressure = 9 atm.

Since the new pressure of 6840 mmHg (9 atm) exceeds 6080 mmHg, then the can will likely explode.

Explanation

Given:

Initial pressure P₁ = 4 atm

Initial temperature, T₁ = 27 °C = (27 + 273.15 K) = 300.15 K

Final temperature, T₂ = 402 °C = (402 + 273.15 K) = 675.15

What to find:

The new pressure at a temperature of 402 °C.

Step-by-step solution:

According to Amonton's law: The pressure of a given amount of gas is directly proportional to its absolute temperature, provided that the volume does not change, i.e:

Putting P₁ = 4 atm, T₁ = 300.15 K, and T₂ = 675.15 K into the formula, we have:

The new pressure at a temperature of 402 °C = 9 atm.

According to the information in the question that the can explode if the internal pressure exerts 6080 mmHg, then we need to convert 9 atm to mmHg to know how likely is it to explode.

Conversion factor:

1 atm = 760 mmHg

So 9 atm = (9 atm/1 atm) x 760 mmHg = 6840 mmHg

Since 6840 mmHg pressure exceeds 6080 mmHg, then the can will likely explode.

These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Option B)

A colloid is a type of mixture in which particles are dispersed throughout a medium, creating a homogeneous appearance. Unlike solutions, where the particles are completely dissolved, and suspensions, where the particles settle out, colloids have particles that are larger than those in solutions but smaller than those in suspensions. One characteristic of colloids is that they can scatter light due to the size of the particles. This scattering of light is known as the Tyndall effect. Examples of colloids include milk, fog, and aerosol sprays. These substances have dispersed particles that are large enough to scatter light, making the beam visible. Therefore, out of the options provided, a mixture that scatters light is an example of a colloid. Therefore option B) is correct

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Note Complete Question

which is an example of a colloid?

a mixture that settles out,

b mixture that scatters light,

c mixture that is separated by filtration,  

d salt and water mixture?

Answer:

26

Explanation:

The atomic number of an atom describes the number of protons within its nucleus. Since the ion has 26 protons, the atomic number must be 26.

Answer:

0.476 L

Explanation:

To find the volume of the blood, you need to multiply the given mass (grams) by the density of blood. It is important to arrange the ratio in a way that allows for the cancellation of units (since you are going from grams to mL, grams must be in the denominator).

Density = 1.05 g/mL

 500 grams                1 mL
--------------------  x  ---------------------  =  476 mL
                               1.05 grams

Finally, you need to convert mL to L. The final answer should have 3 sig figs like the given mass.

1,000 mL = 1 L

   476 mL                    1 L
-----------------  x  --------------------  =  0.476 L
                              1,000 mL

Answer:

HBr + H2O = H3O+ + Br-

So our conjugate acid is the H3O+ to H2O

Explanation:

A conjugate acid of a base results when the base accepts a proton.

Consider ammonia reacting with water to form an equilibrium with ammonium ions and hydroxide ions:

NH3 (aq) + H2O (l) ⇌ NH4+ (aq) + OH- (aq)

Ammonium, NH4+, acts as a conjugate acid to ammonia, NH3.

For a species to survive it must be within its geographical zone for all the genetic factors.

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Answer:

if you meant CH3-CH=CH-CH3, the IUPAC name is 2-butene.

The given question is incomplete. The complete question is:

Gallium (Ga, 69.723 g/mol) is a metalloid obtained from its salts during the smelting of ores of other elements, like Zinc. has broad applicability in the electronics industry. It is also used as a safe replacement for mercury in thermometers as it melts at 29.8 °C and has a heat of fusion of 5.59 kJ/mol. What is the entropy change of 22 g of gallium in J/K as it melts when placed on a surface at 29.8°C?

Answer: The entropy change of of gallium in as it melts when placed on a surface at  is 5.81 J/K

Explanation:

Latent heat of fusion is the amount of heat required to convert 1 mole of solid to liquid at atmospheric pressure.

Amount of heat required to melt 1 mole of Ga = 5.59 kJ

Mass of Ga given = 22 gram

Heat required to melt 69.723 g of Ga = 5.59 kJ

Thus Heat required to melt 22 g of Ga = \(\frac{5.59kJ}{69.723}\times 22=1.76kJ\)

Temperature = \(29.8^0C=(273+29.8)kJ=302.8kJ\)

Now entropy change = \(\frac{\text {heat of fusion}}{\text {temperature in K}}=\frac{1.76kJ}{302.8K}=0.00581kJ/mol=5.81J/K\)

Thus the entropy change of of gallium in as it melts when placed on a surface at \(29.8^0C\) is 5.81 J/K

Answer: a.) 8.2 x 10^-11

Explanation:

Answer: 2.34

Explanation:

pH= -log (H+)

H+ is the acid's M

pH= -log (0.0046) =2.34

Answer:

I dunno,  what is the answer

Explanation:

Answer: The Marshmellow

Explanation

The marshmallow turns from a solid to a gooey texture.

The length of a side of the cube is 28 cm

It is given that

mass of cube = 501.00 g

density of cube = 5.739 g/cm³

We can find volume by using formula of density

The density of a substance is a distinctive quality of matter that is crucial in the majority of scientific and technical disciplines. It is regarded as a characteristic property since its worth is distinct from that of other things and substances. In mathematics, density is defined as the ratio of a substance's mass to volume, and it can be written as

Density = mass/volume

volume = mass/density

volume = 501.00 g/5.739 g/cm³

volume = 87.29 cm³

a = length of sides of cube

a^3 = 87.29 = 3√87.29

a = 28 cm

Hence, the length of a side of the cube is 28 cm

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Answer:

1.03 x 10²³ atoms NaCl

Explanation:

To find the amount of table salt (NaCl) in atoms, you need to (1) convert grams to moles (using the molar mass) and then (2) convert moles to atoms (using Avogadro's Number). It is important to arrange the ratios/conversions in a way that allows for the cancellation of units.

(Step 1)

Molar Mass (NaCl): 22.99 g/mol + 35.45 g/mol

Molar Mass (NaCl): 58.44 g/mol

10 grams NaCl                1 mole
------------------------  x  -----------------------  =  0.17 moles NaCl
                                   58.44 grams

(Step 2)

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

0.17 moles NaCl           6.022 x 10²³ atoms
--------------------------  x  --------------------------------  =  1.03 x 10²³ atoms NaCl
                                                 1 mole

Electromagnetic radiation is the energy waves with various wavelengths. Ultraviolet rays have the shortest wavelength. Thus, option B is correct.

A wavelength is a ratio of the velocity and the frequency as the distance between the crests is measured. The shortest wavelength haves the largest frequency.

Radio waves have the longest wavelength but the shortest frequency and similarly the gamma rays have the shortest wavelength. Ultraviolet rays come before the X-rays and the gamma rays have a short wavelength.

Therefore, option B. UV rays have the shortest wavelength.

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Answer:

in short weight

Explanation:

weight is mass x gravitational pull on an object

Answer:31.7ml

Explanation:

Answer:

B)11

Explanation:

The atomic number is the number of protons and electrons in an atom!!

HOPE THIS HELPS!!!!!!

They all appear to have three significant digits of precision when written as 602x1021, 602x1022, or 0.602x1024.

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Answer: One possible way to design an instrument that can play three different frequencies using household items is to create a set of tuned glass bottles.

Explanation: Here are the steps to follow:

Materials needed:

Three glass bottles of different sizes (e.g., small, medium, and large)

Water

Spoon or stick for tapping the bottles

Instructions:

Fill the first glass bottle with a small amount of water, around one-third full.

Gently tap the bottle with the spoon or stick and listen to the sound it produces.

Adjust the water level in the bottle by adding or removing small amounts of water until you get a desired frequency.

Repeat steps 1-3 with the second and third bottles, but use different water levels to produce different frequencies.

Arrange the bottles in order from the highest frequency to the lowest frequency.

To play the instrument, strike each bottle with the spoon or stick in turn to produce the different frequencies.

By adjusting the water level in each bottle, you can create three different frequencies. The smaller the bottle, the higher the frequency it will produce. Conversely, the larger the bottle, the lower the frequency it will produce.

Answer:

121 I think not sure tbh......

0.000104 mol

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

6.27 × 10¹⁹ atoms

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

Since our final answer already has 3 sig figs, there is no need to round.

The wavelength (in nanometers) of a photon emitted by a hydrogen atom when its electron drops from the n = 5 to n = 3 state is 1280nm.

The distance between two subsequent crests or troughs of the wave is what is meant by the term wavelength. Lambda () is a Greek letter that stands for wavelength.

The wavelength is the distance between one wave's "crest" to another wave's "crest." We can calculate the wavelength by comparing the "trough" of one wave to the "trough" of another wave.

These are the calculations for the energy (E) difference between two shells:

ΔE = -RH [(1 / nf2) - (1/ni2)] ΔE

R Rydberg’s constant (1.0973731568539(55)×107m−1)

nf and ni Integers where n2>n1.

ΔE = -RH [(1 / nf2) - (1/ni2)] ΔE

= -2.18 x10-18 J [(1/32) - (1/52)] ΔE

= -1.55 x10-19 JE

hc/λλ = hc/Eλ

where

λ =The wavelength of the photon.

hc/λλ = hc/Eλ

= [(6.63 x10-34 J.s.) x (3.00 x1017 nm/s)] /(1.55 x10-19 J)

λ = 1280nm

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The volume of gas produced at 18 degrees Celsius 34.7 g of carbon dioxide gas creates of 623 mmHg is 0.03 L

The ideal gas equation is as follows;

PV=nRT

P,V,n,R,T are pressure, volume, number of moles, gas constant and temperature respectively

Substituting the values, we get

623xV=34.7/44x0.0821X291

623V=0.78X23.8911

623V=18.635

V=0.03 L

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Answer:

1. Options A and B

2. Options B and C

3.. B. Net ∆G = -16.7 KJ/mol; C. Net ∆G = -14.2 KJ/mol

Explanation:

1. The spontaneity of a chemical reaction depends on its standard free energy change, ∆G. If ∆G is negative, the reaction is favourable, but when it is positive, the reaction is unfavorable.

Therefore, since reaction A and B have ∆G to be positive, they are unfavorable

2. Coupling an unfavorable reaction to a favourable reaction can help the reaction to proceed in the forward direction as long as the net free energy change is negative.

Coupling reaction A and C, as well as reaction B and C will make the reactions to become favourable as net ∆G is negative in both instances.

3. A and C: net ∆G = 13.8 - 30.5 = -16.7 KJ/mol

B and C: net ∆G = 16.3- 30.5 = -14.2 KJ/mol

Answer:

m = 25.98 g

Explanation:

Given data:

Density of copper metal = 8.96 g/mL

Volume of copper metal block = 2.90 mL

Mass of copper metal block = ?

Solution:

The volume of given block of copper is equal to the volume change of water by adding this block.

Density formula:

d = m/v

by putting values,

8.96 g/mL = m/ 2.90 mL

m = 8.96 g/mL × 2.90 mL

m = 25.98 g

Answer:

A.) Thermal

Explanation:

I got it correct on founders edtell