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devlian [24]
2 years ago
6

Write a word equation for the following reactions. You must indicate whether each substance is a solid, liquid, gas, or solution

.
a. sodium carbonate solution reacts with silver nitrate solution.
b. potassium carbonate solution reacts with nitric acid (hydrogen nitrate) solution.
c. barium nitrate solution reacts with potassium chromate solution.
Chemistry
1 answer:
german2 years ago
7 0

A word equation is one that is written in words rather than using the normal symbols of the elements that are involved.

<h3>What is a word equation?</h3>

A word equation is one that is written in words rather than using the normal symbols of the elements that are involved. In this case we are asked to write the word equation for certain reactions and the states of matter of each of the terms in the reaction must be stated.

The word equations are as follows;

  • sodium carbonate solution(aq) +  silver nitrate solution(aq) ----> sodium nitrate(aq) + silver carbonate(aq)
  • potassium carbonate solution(aq) + nitric acid (hydrogen nitrate) solution(aq) -----> potassium nitrate(aq) + water(l) + carbon dioxide
  • barium nitrate solution (aq)+  potassium chromate solution(aq) -----> potassium nitrate (aq) + barium chromate (s)

Learn more about reaction equation:brainly.com/question/3588292

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The. bond dissociation enthalpies of the H-H bond and the H-Cl bond are 435 kJ mol^-1 and 431 kJ mol^-1, respectively. The ΔHfO
Novay_Z [31]

The bond dissociation energy of the Cl - Cl bond is -958 kJ mol^-1.

<h3>What is the dissociation enthalpy?</h3>

Given that;

H-H bond energy =  435 kJ mol^-1

H-Cl bond energy = 431 kJ mol^-1

ΔHfO of HCL(g) = -92kJ mol^-1

Bond dissociation enthalpy of the Cl-Cl bond = x

-92 = 435  +  431 + x

x = -92 - (435  +  431)

x = -958 kJ mol^-1

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6 0
1 year ago
How much energy (joules) is needed to heat 250 grams of copper from 22 °C to 99 °C? The specific heat capacity (C) of copper is
Naddik [55]

Answer:

7430.5 Joules (7.4*10^4 Joules)

Explanation:

Q=mc∆T

where Q is energy in Joules.

Now m=250 g

c= 0.386 J/g°C

∆T = 99 - 22 = 77 °C

plugging the values in gives

Q=250*0.386*77=7430.5 Joules

(7.4*10^4 Joules, if 2 significant figures)

5 0
2 years ago
Precipitation reactions always occur when two aqueous solutions are mixed (T/F)
Studentka2010 [4]

Answer: The given statement is false.

Explanation:

Precipitation reaction is defined as the chemical reaction in which two aqueous solution upon mixing together results in the formation of an insoluble solid.

For example, NaCl(aq) + AgNO_{3} \rightarrow NaNO_{3}(aq) + AgCl(s)

Here AgCl is present in solid state so, it is the precipitate.

But it is not necessarily true that two aqueous solutions will always result in the formation of a precipitate.

For example, NaCl(aq) + KNO_{3}(aq) \rightarrow KCl(aq) + NaNO_{3}(aq)

Hence, we can conclude that the statement precipitation reactions always occur when two aqueous solutions are mixed, is false.

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Tomtit [17]

Answer:

the four main spheres of the earth are geosphere, hydrosphere, atmosphere and biosphere

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geosphere consists of all rocks on Earth

atmosphere which are the gases that surrounds the earth

hydrosphere which is all the water on the earth

biosphere which are the living things on the earth

5 0
3 years ago
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ryzh [129]

If in the solution, half of the added solute fails to dissolve. The solution started out supersaturated. The correct option is b.

<h3>What is supersaturation?</h3>

Supersaturation is the condition where the solutes exceed the amount that can be dissolved in a solution.

Supersaturation occurs when the solute no longer mix in the solution.

Thus, the correct option is b. The solution started out supersaturated.

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