How can i write the formula for potassium nitride?

QUESTION POSTED AT 12/02/2020 - 04:33 PM

Answered by admin AT 12/02/2020 - 04:33 PM

K2S IS THE LETTERS YOU USE TO PUT IT ALL TOGETHER
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Related questions

What is the empirical formula for a compound that is a 83.7% carbon and 16.3% hydrogen

The empirical formula for a compound that is a 83.7% carbon and 16.3% hydrogen is CH2

ANSWERED AT 28/02/2020 - 03:23 PM


QUESTION POSTED AT 28/02/2020 - 03:23 PM

Write the symbol for every chemical element that has atomic number less than 74 and atomic mass greater than 173.8u

You should be able to locate them on the periodic table as long as you know which part the atomic number is and which part the atomic mass is.

ANSWERED AT 28/02/2020 - 03:22 PM


QUESTION POSTED AT 28/02/2020 - 03:22 PM

The following two experiments are carried out with anhydrous potassium chloride and observations X and Y are made at the end of each experiment. Concentrated sulfuric acid is added to the potassium chloride and the fumes produced are bubbled into aqueous potassium iodide solution - observation X. The potassium chloride is dissolved in aqueous ammonia and this is then added to aqueous silver nitrate - observation Y. What are the observations X and Y?

Answer:

Observation X: The aqueous potassium iodide solution becomes yellow in color

Observation Y: A clear, colorless solution is observed.

Explanation:

Experiment 1

When Concentrated sulfuric acid is added to potassium chloride, hydrogen chloride gas is produced:

H₂SO₄ + 2KCl ⇒ 2HCl (g) + K₂SO₄

When the HCl gas is bubbled into aqueous potassium iodide, a redox reaction takes place at room temperature when energy is provided in the form of light:

4H⁺ + 4I⁻ + O₂ ⇒ 2I₂ + 2H₂O

The iodine causes the solution to become yellow in color (or darker yellow/brown at high concentrations of iodine).

Experiment 2:

When potassium chloride in aqueous ammonia is added to aqueous silver nitrate, the following net reaction occurs:

Ag⁺ + 2NH₃ ⇒ [Ag(NH₃)₂]⁺

The silver reacts with ammonia rather than chloride as ammonia is a better ligand in this case. The ammonia complex is soluble in water.

Thus, a clear, colorless solution will be observed.

ANSWERED AT 28/02/2020 - 10:48 AM


QUESTION POSTED AT 28/02/2020 - 10:48 AM

What is the purpose of adding nahso3 at the end of the oxidation? write a balanced equation for the reaction it undergoes?

The purpose of adding NaHSO3 at the end of the oxidation is to quench the excess oxidizing agent NaOCl. 
NaHSO3 + NaOCl → NaCl + NaHSO4

ANSWERED AT 28/02/2020 - 10:33 AM


QUESTION POSTED AT 28/02/2020 - 10:33 AM

Is potassium a metal metalloid or nonmetal?

Answer:

potassium K is a metal

Explanation:

ANSWERED AT 28/02/2020 - 10:19 AM


QUESTION POSTED AT 28/02/2020 - 10:19 AM

In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. write the balanced chemical equation describing this reaction (using lowest whole-number coefficients.

Answer:

2H₂ + O₂ → 2H₂O

Explanation:

The problem tells us that hydrogen gas (H₂) and oxygen gas (O₂) are the reactants, while water (H₂O) is the only product. Thus, the reaction is:

H₂ + O₂ → H₂O

In order to balance this equation, we begin with counting the atoms of O present in the left side and in the right side of the equation. Because there are two O atoms in the left but only one on the right, we add a coefficient of 2 in the right side:

H₂ + O₂ → 2H₂O

Now we count the H atoms, there are 2 in the left and 4 in the right, so we add a coefficient of 2 for the hydrogen gas:

2H₂ + O₂ → 2H₂O

Now there are 4 H atoms in both sides, and 2 O atoms in both sides, so the equation is balanced.

ANSWERED AT 28/02/2020 - 07:55 AM


QUESTION POSTED AT 28/02/2020 - 07:55 AM

Write the ground state electron configuration for the phosphorus atom

It's 1s2 2s2 2p6 3s2 3p3. 

ANSWERED AT 28/02/2020 - 07:54 AM


QUESTION POSTED AT 28/02/2020 - 07:54 AM

How many grams of potassium chlorate decompose to potassium chloride?

You have to find out how many moles of O2 you have at the pressure and temperature. Use PV=nRT then calculate grams from moles of KC103

ANSWERED AT 28/02/2020 - 07:52 AM


QUESTION POSTED AT 28/02/2020 - 07:52 AM

These healthcare professionals are usually limited to the types of prescriptions they can write by a set standing orders.

I'm not sure what your question is?

ANSWERED AT 28/02/2020 - 07:51 AM


QUESTION POSTED AT 28/02/2020 - 07:51 AM

Silver+oxygen formula

Silver often forms compounds in the +1 oxidation state, meaning silver oxide will have the formula Ag2O. The chemical equation for the formation of this from its elements is:
2Ag + O2 --> Ag2O

Hope this helps!

ANSWERED AT 28/02/2020 - 04:38 AM


QUESTION POSTED AT 28/02/2020 - 04:38 AM

Chemistry- "write the products expected from each acid-base reaction shown below........ 1.) NaOH + HCl = ______ + _______2.) Ca (OH)2 + H2SO4 = _______ + _________3.) HCl +Ba (OH)2= ______ + _______4.) HNO3 + LiOH = ______ + _______5.) H2CO3 + NaOH = _______ + ______6.) KOH + HC2 H3 O2 = ______ + _______7.) Ba(OH)2 + HNO2= _______ + _____8.) H2 SO3 + NaOH= ______ + ______9.) H3 PO4 + KOH= ____+_____10.) HBr + Ca (OH)2=

1.) NaOH + HCl  →  NaCl  +  H₂O

2.) Ca(OH)
₂  +  HSO4    CaSO₄ +  2H₂O

3.) 2HCl +Ba (OH)2  
→  BaCl₂  +  2H₂O

4.) HNO3 + LiOH   
→   LiNO₃  +  H₂O

5.) H
₂CO₃ + NaOH  →  Na₂CO₃  +  H₂O

6.) KOH  +  HC
₂H₃O₂  →  KC₂H₃O₂  +  H₂O

7.) Ba(OH)2 + HNO2  
 Ba(NO₂)₂  +  H₂O

8.) H
SO + 2NaOH    Na₂SO₃  +  2H₂O

9.) H
PO + 3KOH     K₃PO₄  +   3H₂O 

10.) 2HBr + Ca(OH)2  
  CaBr₂  +  2H₂O


The reason why water is so recurrent is because of the general form that says:   ACID  +  BASE  →  SALT  +  WATER

I took the liberty of balancing the equations.

ANSWERED AT 27/02/2020 - 09:57 AM


QUESTION POSTED AT 27/02/2020 - 09:57 AM

Pretend that you are the size of an atom, observing a reaction between a potassium atom and a fluorine atom. Write an account of the formation of an ionic bond as the atoms react. Tell what happens to the valence electrons on each atom and how each atom is changed by losing or gaining electrons.

Potassium will loss it's electron because it have a character of electropositively therefore it's electron will transfer to flouren which will make stable and complete of it's electro configuration. Now potassium will have negative charge due to loss it's outer most electron on it's orbit and flourine will take negatively charge too because of complete it's outer most shell to be completed.(But we have to know that at first flourine was had a positive charge because of not completed of it's outer most shell)

ANSWERED AT 27/02/2020 - 09:26 AM


QUESTION POSTED AT 27/02/2020 - 09:26 AM

Write the chemical equation for the reaction that occured when you added naoh solution to the nah2

 CH3COOH + NaOH = CH3COONa +H2O

ANSWERED AT 26/02/2020 - 11:59 PM


QUESTION POSTED AT 26/02/2020 - 11:59 PM

Write METAL, NONMETAL, DIATOMIC MOLECULE ,METALLOID alkali metal alkaline earth metal iron triad halogens noble gases boron group oxygen group

Alkali metal - Group 1 metal
Alkaline earth metal - Group 2 metal
Iron triad - metal
Halogens - most are diatomic and are nonmetals - Cl2, Br2, I2
Noble gases - nonmetals and are not reactive due to full valence shell.
Boron group - metalloid
Oxygen group - oxygen molecule - a diatomic molecule composed of oxygen atoms, which are nonmetals.

ANSWERED AT 26/02/2020 - 05:16 PM


QUESTION POSTED AT 26/02/2020 - 05:16 PM

Formula for the amount of heat given off or absorbed during a temperature change

1) Delta E = q + w
OR
2) q = m * c * Delta T

Where:
Delta E = The change in energy
q = Heat given of or absorbed
w = work
m = mass
c = specific heat
Delta T = The change in temperature

Not sure which one you need, but hope this helped!

ANSWERED AT 26/02/2020 - 05:14 PM


QUESTION POSTED AT 26/02/2020 - 05:14 PM

What is the chemical formula for lead(1V) oxide?

Lead(IV) oxide = Pb^+4 O^-2

Reduce the charges and swap the ionic charges for the subscripts for the atoms that are present in the ionic compound.

Pb^+2 O^-1

PbO2. This would be the chemical formula.

ANSWERED AT 26/02/2020 - 05:06 PM


QUESTION POSTED AT 26/02/2020 - 05:06 PM

Write the equation that relates pH to pOH

The chemical equation that ultimately relates the pH of a solution to the pOH at temperatures that are at 25 degrees Celsius would be pH + pOH = pKW which would be 14 at 25 C

pH + pOH = 14.

ANSWERED AT 26/02/2020 - 04:42 PM


QUESTION POSTED AT 26/02/2020 - 04:42 PM

Sodium ion and calcium ions produce nearly the same color in a flame test. Describe a way to differentiate between the two using a solution of Na2CO3 and write a balanced equation

To different sodium from calcium ions, we can add sodium and calcium ions separately to Na2CO3. On the sodium ion side, there will be no reaction while with Ca 2+ ions, the product resulting from the reaction will be CaCO3 via single replacement reaction. CaCO3 is a precipitate which makes the difference between the two ions.

ANSWERED AT 26/02/2020 - 04:16 PM


QUESTION POSTED AT 26/02/2020 - 04:16 PM

What is the formula for the binary compound between potassium and iodine

The answer is KI. K is potassium and I is iodine.

ANSWERED AT 26/02/2020 - 03:07 PM


QUESTION POSTED AT 26/02/2020 - 03:07 PM

In the chemical formula 3h2o, how many atoms are there of each element?

3 hydrogen, 2 oxygen

Hope that helps

ANSWERED AT 26/02/2020 - 12:43 PM


QUESTION POSTED AT 26/02/2020 - 12:43 PM

Write equations for the reactions of the carboxylic acids with naoh

It is the reaction of salt

ANSWERED AT 25/02/2020 - 11:21 PM


QUESTION POSTED AT 25/02/2020 - 11:21 PM

Write equations for the initiation and propagation steps for the formation of dichloromethane by free radical

 Name of type of mechanism initiation step first propagation step second propagation step(ii) write an overall equation for the formation of dichloromethane from ... Best Answer: i) This is a free-radical substitution mechanism.

ANSWERED AT 25/02/2020 - 11:21 PM


QUESTION POSTED AT 25/02/2020 - 11:21 PM

How to write complete ionic and net ionic equations?

An ionic can write with the symbol above e.g Na(+) and Cl(-) while net ionic equestion can cross the same elements which contain the same symbol(ionic symbol like (+),(-) )

ANSWERED AT 25/02/2020 - 09:20 PM


QUESTION POSTED AT 25/02/2020 - 09:20 PM

What is the chemical formula of lead(IV)oxide

The chemical formula for Lead(IV) oxide, is PbO2.

:P

ANSWERED AT 24/02/2020 - 10:55 PM


QUESTION POSTED AT 24/02/2020 - 10:55 PM

4) 4 NH3 + 3 O2  2 N2 + 6 H2O a. Write the mole ratio for NH3 to N2 b. Write the mole ratio for H2O to O2

4 NH₃ + 3O₂ --> 2N₂ + 6H₂O

First, make sure that this is a balanced equation.
There are 4 moles of nitrogen on the left side, and 4 moles of nitrogen on the right side.
There are 12 moles of hydrogen on the left side, and 12 moles of hydrogen on the right side.
There are 6 moles of oxygen on the left side, and 6 moles of oxygen on the right side.

The equation is therefore balanced, and we may proceed.

a) the mole ratio for NH₃ to N₂ is 4 to 2, which can be simplified to 2:1 or 2/1.

b) the mole ratio for H₂O to O₂ is 6 to 3, which can be simplified to 2:1 or 2/1.

ANSWERED AT 24/02/2020 - 08:45 PM


QUESTION POSTED AT 24/02/2020 - 08:45 PM

What is the mole fraction of methanol in a solution that contains 6.0 mol of methanol and 3.0 mol of water? The formula for methanol is CH3OH.

The mole fraction of a product is the number of moles of the product divided by the total number of moles of the solution.

Here moles of methanol = 6.0 moles

Moles of solution = 6.0 moles of methanol + 3.0 moles of water = 9.0 moles of solution

Mole fraction of methanol = 6.0 / 9.0 = 0.67

Answer: 0.67  

ANSWERED AT 23/02/2020 - 11:17 PM


QUESTION POSTED AT 23/02/2020 - 11:17 PM

What is molecular formula of C18H3O8

Well I mean the molecular mass is-
347.21

ANSWERED AT 22/02/2020 - 06:45 PM


QUESTION POSTED AT 22/02/2020 - 06:45 PM