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2 years ago

Please help this makes no sense to me!!

Chemistry

1 answer:

True [87]2 years ago

7 0

Answer:

potassium nitrate= KNO3 ---> KNO2 + O2 and a gas evolution reaction

Explanation:

i think

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Please help.

ser-zykov [4K]

Answer:

1. a series of steps 2. experiment

Explanation:

6 0

3 years ago

PLEASEEE I BEGG YOU I WILL LITERALLY SEND YOU MONEY

tankabanditka [31]

Answer:

Q1. 0.82 mol

Q2. 9.20 g

Explanation:

Question 1

Step 1: Given and required data

Mass of NaHCO₃ (m): 68.88 g

Molar mass of NaHCO₃ (M): 84.01 g/mol

Step 2: Calculate the moles (n) corresponding to 68.88 g of NaHCO₃

We will use the following expression.

n = m/M

n = 68.88 g/(84.01 g/mol) = 0.82 mol

Question 2

Step 1: Given data

Moles of NaOH (n): 0.23 mol

Molar mass of NaOH (M): 40.00 g/mol

Step 2: Calculate the mass (m) corresponding to 0.23 moles of NaOH

We will use the following expression.

m = n × M

m = 0.23 mol × 40.00 g/mol = 9.20 g

5 0

2 years ago

The melting point of ice is closest to - <br> A. 0 ºC. <br> B. 10 ºC. <br> C. -5 ºC. <br> D. 100 ºC.

jonny [76]

B. 10 degrees Celsius

5 0

3 years ago

A gas has a volume of 10 L at 200 K and a pressure of 1.5 atm . What would the volume of the gas be at 300 K and 2atm of pressur

Kryger [21]

Answer:

jeyjeyjetnetney

Explanation:

thmrhmrhmrum

8 0

2 years ago

Can you guys please help me on this!!!

Anna11 [10]

Answer:

2 moles of ammonium ions required to combine with 1 mole of oxalate ion to form ammonium oxalate.

Explanation:

Ammonium cation= $NH_4^+$

Oxalate anions = $C_2O_4^{2-}$

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound as shown in the image attached.

The ionic compound that formed when ammonium ion and oxalate ions combine is ammonium oxalate.

$2NH_4^++C_2O_4^{2-}\rightarrow (NH_4)_2C_2O_4$

2 moles of ammonium ions required to combine with 1 mole of oxalate ion to form ammonium oxalate.

8 0

3 years ago