Flame __________ __________ is an instrumental method of analysing metal ions in solutions. What are the 2 missing words in this sentence?​

Answers

Answer 1

Answer:

emission spectroscope

Explanation:

The flame emission spectroscope is a scientific instrument based on flame testing.


Related Questions

Examine each of the following pie charts. Which one shows the correct makeup of Earth's atmosphere?


A
A


B
B


C
C


D
D

Answers

Answer:

Answer A

Explanation:

atmosphere is made up of approx 78% N and 21% O2

Each of the colored lines in hydrogen's emission spectrum corresponds with the
A) energy released by the electrons as they orbit the nucleus.
B) the ionization energy of the electron when forming chemical bonds.
C) transition of an electron from a higher energy level to a lower energy level.
D) transition of an electron from a lower energy level to a higher energy level
when excited.

Answers

Each of the colored lines in hydrogen's emission spectrum corresponds with the C. transition of an electron from a higher energy level to a lower energy level.

What is an emission spectrum?

An emission spectrum can be defined as the range of wavelengths, frequencies or pattern of bright lines which can be seen when the electromagnetic radiation that are emitted by an atom of a chemical compound (substance) moves through a spectrometer.

Generally, this process leads to the quantization or transfer of an electron from one energy level to another such as the transition of an electron from a energy level of higher magnitude to a lower energy level in hydrogen's emission spectrum.

Read more on electrons here: https://brainly.com/question/16554158

how many grams is 1.25 moles of NaCl

Answers

Molar mass of NaCl:-

23+35.558.5g/mol

Now

Mass=Molar mass ×MolesMass=125(58.5)Mass=7312.5g

Please answer my question I really need it now ​

Answers

Answer:

1 Li , Na, K, Rb, Cs

2 Co, V , Cr, Mn, Fe

3 Po, Te, Se, S, O

Which statement below describes the location of nonmetals on the periodic table?

Answers

Answer:

Nonmetals are located on the upper right side of the Periodic table (see above image). Exception: Hydrogen is a nonmetal which is located on the left top corner of the Periodic table. Well, you have got the answer of “Where are Nonmetals located on the Periodic Table?”

Explanation:

What is Solution Concentration with examples​

Answers

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Solution Concentration or the concentration of the solution.The amount of solute dissolved in a particular amount of the solvent is a crucial parameter and is called Solution Concentration

EXAMPLE →

if you add one teaspoon to two cups of water, the concentration could be reported as 1 t salt per 2 c water.

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NEED HELP ASAP!!! WILL MARK BRAINLIEST!!! A scuba tank can hold 18 L of air 6 atm of pressure. If the gas were to be released all underwater at 4 atm, it would take up how much volume assuming that the temperature remained constant?

Answers

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

If temperature remains constant, then we can apply the formula :

[tex]\qquad \tt \dashrightarrow \:p_1v_1 = p_2v_2[/tex]

[tex]\qquad \tt \dashrightarrow \:4 \times v_1 = 6 \times 18[/tex]

[tex]\qquad \tt \dashrightarrow \: v_1 = 108 \div 4[/tex]

[tex]\qquad \tt \dashrightarrow \:v_1 = 27[/tex]

So, the required volume is 27 litres

How many moles of sulfur are in 53.7 grams of sulfur?

Answers

NO.OF.MOLES= MASS/ATOMIC MASS
THE ATOMICITY OF SULPHUR IS 8 AND ITS MASS NUMBER IS 32.
SO, THE ATOMIC MASS IS 256
NO.OF.MOLES= 53.7/256
= 537/2560
= 0.2097

Answer:

1.67 moles (find this by dividing 53.7 by the gram formula mass of sulfur, which is about 32.1)

Gold can be found in native or pure state in nature why? Write any one anyone application of sulphur​

Answers

Answer:

Sulphur is used in making car batteries and fertlizers

Answer:

Gold is almost found in its pure state. Because gold does not react with other elements or compounds easily. Elemental sulfur is used in black gunpowder, matches, and fireworks; in the vulcanization of rubber; as a fungicide, insecticide, and fumigant; in the manufacture of phosphate fertilizers; and in the treatment of certain skin diseases. The principal use of sulfur, however, is in the preparation of its compounds.

A sample of gas has a volume of 8.20 L at 0.750 atm and 375 K. What volume (in L) does the gas occupy at 817 torr and 325 K?

Answers

The new volume occupied by the sample of gas is 4.96L.

Given the data in the question;

Initila pressure; [tex]P_1 = 0.750atm[/tex]Final pressure; [tex]P_2 = 817torr = 1.075atm[/tex]Inital temperature; [tex]T_1 = 375K[/tex]Final temperature; [tex]T_2 = 325K[/tex]Initial Volume; [tex]V_1 = 8.20L[/tex]

Final Volume; [tex]V_2 = \ ?[/tex]

Combined gas law

Combined gas law put together both Boyle's Law, Charles's Law, and Gay-Lussac's Law. It states that the ratio of the product of volume and pressure and the absolute temperature of a gas is equal to a constant.

It is expressed as;

[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}[/tex]

To calculate the new volume the gas occupy, we subtsitute our given values into the expression above.

[tex]\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}\\ \\ P_1V_1T_2 = P_2V_2T_1\\\\0.750atm * 8.20L * 325K = 1.075atm * V_2 * 375K\\\\1998.75LatmK = 403.125atmK * V_2\\\\V_2 = \frac{1998.75LatmK}{403.125atmK} \\\\V_2 = 4.96L[/tex]

Therefore, the new volume occupied by the sample of gas is 4.96L.

Learn more about the combined gas law: brainly.com/question/25944795

La cantidad de corriente se expresa en...

A. Ohmios.
B. Voltios.
C. Amperios.

Answers

Answer:

C

Explanation:

Amps measure the flow of Electrons

Answer:

C

Explanation:

is c

2) The coregion in the area of the Texas Panhandle. This coregion is level plates that ranges in elevation from 3000 to 4500. This is very fry dry and
the characteristics of this coon we would expect to see plenty of
A) wind ersoin
B) water ersoin
C) deposition of sediment

Answers

Answer:

the correct answer is B po sure po ako

Explanation:

Sure na sure po

Answer:

The map shows the various ecoregions of Texas. Which ecoregion is most vulnerable to wind erosion from hurricanes originating in the Gulf of Mexico? desert. A.

Explanation:

Part G

Explain how the structure of ammonium lauryl sulfate, as described in parts E and F, produces the properties identified in part C. Write a short paragraph or two.

Answers

The molecule ammonium lauryl sulfate is a detergent because of its hydrophobic tail and a hydrophilic head which are responsible for its cleansing action.

Properties of ammonium lauryl sulfate

Though not shown, I presume that the property labelled as C must have to do with the cleasing action of the molecule ammonium lauryl sulfate.

The substance has a hydrophobic tail and a hydrophilic head which enables it to form miscles and these are the responsible for the cleansing action of the ammonium lauryl sulfate molecule.

Learn more about ammonium lauryl sulfate: https://brainly.com/question/16483020

In a typical mammalian cell, the net transport by the sodium-potassium exchange pump that maintains the 70 mv membrane potential is 500 singly charged ions per second.

Answers

For  a typical mammalian cell, the net transport by the sodium-potassium exchange pump, Work done is mathematically given as

W= 5.6*10-18 J

How much work does the pump do each second?

Generally, the equation for the Potential difference   is mathematically given as

Potential difference = Work done / Charge

Therefore

W=q*P.d

Q= 500 * 1.6*10-19 C

P.d. = 70 mV

In conclusion,Workdone  

W500 * 1.6*10-19 * 70*10-3

W= 5.6*10-18 J

Read more about Work

https://brainly.com/question/756198

6. Cu + FeSO4
single replacement

Answers

Answer:

CuSO4 + Fe

Explanation:

this is because Cu will displace Fe from it's position

Grace runs 6 miles in 2 hours. What is her speed?

Answers

About… 20 mph because 6 miles is not a lot and I can do 8 in 1 hour

What is the pressure in a 8.00 L tank with 50.5 grams of chlorine gas at 365 K?

Answers

The pressure in a 8.00 L tank with 50.5 grams of chlorine gas at 365 K is 2.67atm.

How to calculate pressure?

The pressure of a given mass of gas can be calculated using the following formula:

PV = nRT

Where;

P = pressureV = volumeT = temperaturen = no of molesR = gas law constant

The number of moles in 50.5g of Chlorine gas is as follows:

moles = 50.5/70.91

moles = 0.71mol

P × 8 = 0.71 × 0.0821 × 365

8P = 21..34

P = 21.34/8

P = 2.67atm

Therefore, the pressure in a 8.00 L tank with 50.5 grams of chlorine gas at 365 K is 2.67atm.

Learn more about pressure at: https://brainly.com/question/12971272

A ____________ is required to transfer dna sequences from one organism to another.

genomic library

genetic probe

vector

restriction endonuclease

reporter gene

Answers

genetic probe because it is required to transfer DNA sequences from one organism to another.

50. g of NaNO3 was dissolved in 1250 mL of water.
What is the molality of the solution? (Molar mass of
NaNO3 = 85 g/mol; Density of water = 1.00 g/mol)
m.
Your answer should be rounded to two significant figures. Do not
include units in your answer.

Answers

Answer:

.47

Explanation:

I just took a test that asked this exact same question and I got it right.

What is the pressure in atm of a 5. 00 l tank with 2. 50 moles of oxygen


at 39. 3 °c?


1


4


7

Answers

Answer:

1

Explanation:


What is the pH of a solution that has a poH of 1.8?

Answers

Answer:

Ok so To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity).  The pH is then calculated using the expression:

pH = - log [H3O+].

Example:  Find the pH of a 0.0025 M HCl solution.  The HCl is a strong acid and is 100% ionized in water.  The hydronium ion concentration is 0.0025 M.  Thus:

pH  =  - log (0.0025) = - ( - 2.60) = 2.60

Explanation:

The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH.

[H3O+] = 10-pH  or  [H3O+] = antilog (- pH)

Example:  What is the hydronium ion concentration in a solution that has a pH of 8.34?

8.34 = - log [H3O+]

- 8.34 = log [H3O+]

[H3O+] = 10-8.34 = 4.57 x 10-9 M

On a calculator, calculate 10-8.34, or "inverse" log ( - 8.34).

Proteins are biological polymers made of ?

Answers

Answer:

amino acids

Explanation:

Proteins are polymers made from different monomers, called amino acids.

Hope this helps.

Calculate the mass of sample of calcium carbonate containing 5.5 x 10^23 atoms

A. 18.29 g
B. 91.44 g
C. 6.02 x 10^23g
D. not enough information

which one is it?? thank you

Answers

No of moles:-

No of molecules/Avagadro no5.5×10²³÷6.022×10²³0.91mol

Now

molar mass:-

CaCO_340+12+48100g/mol

Mass:-

100(0.91)91g

Option B

How can you get a real gas to behave like the LEAST like an ideal gas (minimize attraction between particles)?

Answers

A real gas behaves least like an ideal gas under the conditions of low temperature and high pressure.

This is because at low temperature and high pressure molecules of gas will have negligible kinetic energy and strong force of attraction. Thus, real gas will not behave like an ideal gas.

Whereas at high temperature and low pressure a real gas will behave like an ideal gas.

Answer: No real gas is ideal. All molecules have a volume and intermolecular forces of attraction. So a "real molar volume" is different from an ideal molar volume.

Explanation: I hope this help

which of the following changes different colours in alkalis,acids,and neutral substances?

A red litmus paper
B Blue litmus paper
C universal indicator
D all of the above​

Answers

B I think if not it’s for sure a
A and B I think we did some experiments in chemistry but I don’t remember.

After some wood has completely burned in a fire some of the matter that made up the wood has been destroyed

Answers

Answer:

Because it went through a chemical change which changes its atomic form

a sample of helium gas has a volume of 200.0 mL at 730mm Hg pressure. What pressure, in atm is needed to reduce the volume at a constant temperature to 50.0 mL

Answers

Explanation:

The question had been explained.

PLEASEE HELPPP
what is the ph of 1.0 times 10^-2 M HBr

Answers

Answer:

The pH of a solution with the [H + ] = 1 × 10 -2 M is 2 and the pH of a solution with the [H + ] = 1 × 10 -10 M is 10. ( I think this is correct ).

Explanation:

during lanslides rock and soil are?

Answers

Answer:

Getting carried down a moutain side or a cliff and they are relocated.

Explanation:

Glaciers are responsible for moving rocks from one place to another

a gas that has a pressure of 7.5 atm and a volume of 20L what would be the new volume if the pressure was changed to 3.5 atm

Answers

Answer: 43 L

Explanation:

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