All categories

2 years ago

What are the missing coefficients for the skeleton equation below? cr(s) + fe(no3)2(aq) → fe(s) + cr(no3)3(aq)?

1 answer:

8 0

SThe missing coefficient for the skeleton equation below is as follows

skeleton equation

Cr(s) + Fe(No3)2(aq) ------> Fe (s) + Cr(NO3)3 (aq)
the missing coefficient are is as follows

2 Cr(s) + 3 Fe(NO3)2 ---> 3 Fe (s) + 2 Cr(NO3)3

This is obtained by making sure all the molecules are balanced in both sides

You might be interested in

A white powder is known to be a mixture of magnesium oxide and aluminum oxide. 100cm3 of 2moldm-3 NaOH(aq) is just sufficient to

Effectus [21]

Answer: D.Aluminium Oxide 0.10, Magnesium Oxide 0.50

Explanation:

Number of moles of NaOH= number of moles × volume

Number of moles= 100/1000 × 2 = 0.2 moles

Since;

2 moles of NaOH yield 1 mole of Al2O3

0.2 moles of NaOH will yield 0.2 × 1/2 = 0.1 moles of Al2O3.

Number of moles of HCl= 800/1000 × 2 = 1.6 moles

If 1 mole of Al2O3 requires 6 moles of HCl

0.1 moles of Al2O3 requires 0.1 × 6 = 0.6 moles of HCl.

Number of moles of HCl left after reaction with Al2O3 = 1.6- 0.6 = 1 mole

This leftover reacts with MgO

But;

1 mole of MgO reacts with 2 moles of HCl

x moles of MgO reacts with 1 mole of HCl

Thus; x= 0.5 moles of MgO

8 0

2 years ago

If the human body were a car, glucose would be:

NeTakaya

<span>If the human body were a car, glucose would be the gasoline.
Glucose gives humans energy, we basically run on glucose, among other things, the same way a car would run on gas.
</span>

8 0

2 years ago

Draw the condensed structural formula in the equation for the saponification of trimyristin with koh

Ludmilka [50]

Explanation: Saponification reaction is a reaction in which hydrolysis of fats takes place under basic conditions giving glycerol and a salt of corresponding fatty acid.

We are given a Fatty acid called as Trimyristin.

Its reaction with KOH leads to the formation of soap and is given by the equation:

$Trimyristin+3 KOH\rightarrow Glycerol+Soap$

$C_{45}H_{86}O_6+3KOH\rightarrow C_3H_5(OH)_3+3CH_3(CH_2)_{12}CO_2K$

The condensed structural formula for the equation is given in the image attached.

4 0

2 years ago

Read 2 more answers

Four students all do the same experiment for the science fair. They test reaction times for pushing a button when a specific col

emmasim [6.3K]

Sorry, Cant really tell how to differentiate the students and trial times

3 0

2 years ago

Rank the following acids in order of increasing acid strength. Key: Weakening of hydrogen bond and stability of resulting anion.

raketka [301]

Explanation:

The given compounds are oxyacids and in these compounds more is the electronegativity of the central atom more will be its acidic strength.

This is because more is the electronegativity of the central atom more will be the polarity of OH bond. As a result, the compound can readily lose $H^{+}$ ion.

Also, more is the electronegativity of central atom more will be the stability of conjugate base formed.

Thus, we can conclude that given compounds are arranged in increasing acid strength as follows.

HOI < $HOBr_{2}$ < $HOCl_{3}$ < HOF

8 0

2 years ago