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alexandr1967 [171]
4 years ago
15

Predict whether litmus paper will turn red or blue when dipped in:

Chemistry
1 answer:
Temka [501]4 years ago
7 0

Answer:

a. blue, b. red, c. red, d. basic - blue

Explanation:

a.washing powder ( containing sodium carbonate ) basic -blue

b. orange juice ( containing citric acid )- acidic -red

c. lemonade ( containing H2CO₃ )-acidic - red

d. cleaner ( containg NH₃ )- basic - blue

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. For the reaction 2HNO3 + Mg(OH), → Mg(NO3)2 + 2H20, how many grams of magnesium nitrate are produced from 8.00 mol of nitric a
GREYUIT [131]

Mass of Magnesium nitrate produced : 593.2 g

<h3>Further explanation</h3>

The reaction equation is the chemical formula of reagents and product substances

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

2HNO₃ + Mg(OH)₂ → Mg(NO₃)₂ + 2H₂0

mol HNO₃ = 8

From the equation, mol ratio of HNO₃ : Mg(NO₃)₂ = 2 : 1, so mol Mg(NO₃)₂ :

\tt \dfrac{1}{2}\times 8=4~moles

Mass Mg(NO₃)₂(MW=148,3 g/mol) :

\tt mass=mol\times MW\\\\mass=4\times 148,3 g/mol\\\\mass=593.2~g

6 0
3 years ago
The pressure inside an aerosol can is 3.80 atm at 25.0°C. If the temperature is increased from 25.0°C to 100.0°C, what would be
ladessa [460]

Answer:

B. 4.76 atm

Explanation:

P_1 = Initial pressure = 3.8 atm

T_1 = Initial temperature = 25+273.15\ \text{K}

P_2 = Final pressure

T_2 = Final temperature = 100+273.15\ \text{K}

From Gay Lussac's law we have

\dfrac{P_2}{P_1}=\dfrac{T_2}{T_1}\\\Rightarrow P_2=P_1\dfrac{T_2}{T_1}\\\Rightarrow P_2=3.8\times\dfrac{100+273.15}{25+273.15}\\\Rightarrow P_2=4.76\ \text{atm}

The pressure inside the can would be 4.76\ \text{atm}.

7 0
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Evolution happens by which process?
ivanzaharov [21]

Answer:

a

Explanation:

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A certain reaction is exothermic in the forward direction. The reaction has more moles of gas on the product side. Which of the
WARRIOR [948]

Answer:

Increasing the temperature

Explanation:

According to le ch.atlleors principle any external pressure, temperature,change in concentration can change the equilibrium

So applying temperature comes under it

7 0
2 years ago
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What is the molar mass for 5 mol Na
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22.98977 g/

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3 years ago
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