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2 years ago

Aluminium and potassium nitrate will not react when mixed together?

Chemistry

2 answers:

Stels [109]2 years ago

7 0

Answer:

they would react to make aluminum oxide and nitrogen

Explanation:

hope this helps plz mark as brainliest

Sindrei [870]2 years ago

4 0

Answer:

Bruh

Explanation:

I need answers :c

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The time it takes from a new moon to a waning gibbous moon is about?

Mama L [17]

Answer:

I belive about 3 days.

Explanation:

To the naked eye, the full moon lasts about three days, but in reality, it is a full moon for just an instant before it begins to wane. The moon takes just under one month an average of 29 1/2 days to complete its phases.

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3 years ago

Predict whether a precipitation reaction will occur when aqueous solutions of pbcl2 and (nh4)2s

Nutka1998 [239]

Answer : YES, The precipitation reaction will occur.

Explanation : When we mix the aqueous solutions of Lead chloride and Ammonium sulfide a reaction will occur which is stated below :

$PbCl_{2} +(NH_{4}) _{2} S ----\ \textgreater \ PbS + 2[ (NH_{4})Cl]$

The major product that is formed is Lead sulfate which is black in colour.

Once the reaction is complete one can observe a black precipitate getting obtained.

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3 years ago

Oxygen 22 has a half life of 2.25 seconds. What percent of the sample is left after 2.25 seconds?

Nonamiya [84]

Answer:

50 because it’s a ratio problem

Explanation:

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2 years ago

Read 2 more answers

Calculate the molarity of an hcl solution if a 10.00 ml sample requires 25.24 ml of a 1.600 m naoh solution to be neutralized.

AlladinOne [14]

Answer:

The molarity of the HCl solution should be 4.04 M

Explanation:

<u>Step 1:</u> Data given

volume of HCl solution = 10.00 mL = 0.01 L

volume of a 1.6 M NaOH solution = 25.24 mL = 0.02524 L

<u>Step 2:</u> The balanced equation

HCl + NaOH → NaCL + H2O

Step 3: Calculate molarity of HCl

n1*C1*V1 = n2*C2*V2

Since the mole ratio for HCl and NaOH is 1:1 we can just write:

C1*V1 =C2*V2

⇒ with C1 : the molarity of HCl = TO BE DETERMINED

⇒ with V1 = the volume og HCl = 10 mL = 0.01 L

⇒ with C2 = The molarity of NaOH = 1.6 M

⇒ with V2 = volume of NaOH = 25.24 mL = 0.02524 L

C1 * 0.01 = 1.6 * 0.02524

C1 = (1.6*0.02524)/0.01

C1 = 4.04M

The molarity of the HCl solution should be 4.04 M

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3 years ago

If there were 10 grams of a radioactive isotope, how much of the sample would be left after 1 half-life? How much after 2 half-l

Vikentia [17]

One half-life: 5 grams
Two half-lives: 2.5 grams

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2 years ago