What is the balanced equation for H3PO4=H4P2O7+H2O

if 25 g of potassium nitrate hydroxide reacts with 25bg of magneisum nitartae to produce potassium nitrate and magneisum hydroxi

Natasha_Volkova [10]

Answer:

0.336 moles of KNO₃ are produced

The limiting reactant is Mg(NO₃)₂

Explanation:

We need to define the reaction to complete this question:

Reactants are: KOH and Mg(NO₃)₂

Products are: KNO₃ and Mg(OH)₂

The reaction is:

2KOH + Mg(NO₃)₂ → 2KNO₃ + Mg(OH)₂

We convert the mass of the reactants, to moles:

25 g / 56.1 g/mol = 0.446 moles

25 g / 148.3 g/mol = 0.168 moles

2 moles of hydroxide need 1 mol of nitrate to react

Then, 0.446 moles of KOH must need (0.446 .1) / 2 = 0.223 moles of nitrate

We do not have enough nitrate, so the Mg(NO₃)₂ is the limiting reagent.

Let's work with the equation and the ratio, which is 1:2

1 mol of Mg(NO₃)₂ produces 2 moles of KNO₃

Then, 0.168 moles of Mg(NO₃)₂ will produce (0.168 . 2) / 1 = 0.336 moles of KNO₃ are produced

5 0

3 years ago

How does water move between the hydrosphere and atmosphere?

ratelena [41]

Answer:

here I just googled this for you I hope it helps

7 0

3 years ago

Read 2 more answers

HEAT ONLY FLOWS UPWARD; TRUE OR FALSE?

yaroslaw [1]

Answer:

it would be false. It doesn't only flow upward

Explanation:

6 0

3 years ago

He amount of sun that an area receives affects the movement of water through the water cycle, which is illustrated below.

Elan Coil [88]

Answer:

evaporation

Explanation:

The process of evaporation is as a result of water absorbing energy from the sun.

The process is a phase change in which liquid water changes into gaseous form.

The water in gaseous form is called vapor
This water cools and condenses in the atmosphere as it loses the energy it has gained.
For evaporation to take place, water must absorb energy from the sun or other heating bodies.
This will then cause vaporization of the liquid water into a gaseous form.

4 0

3 years ago

Refrigerant-134a enters the coils of the evaporator of a refrigeration system as a saturated liquid-vapor mixture at a pressure

Firdavs [7]

Answer:

(a) 0.699 kJ/K

(b) -0.671 kJ/K

(c) 0.028 kJ/K

Explanation:

The Refrigerant-134a flows into the evaporator as a saturated liquid-vapor mixture and flows out as a saturated vapor at a saturation pressure of 160 kPa and temperature of -15.64°C (estimated from the Saturated Refrigerant-134a Temperature Table).

(a) The entropy change of the refrigerant (ΔS $_{R-134a}$ ) = Q/T $_{1}$