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boyakko [2]
3 years ago
12

Explica como procederias para obter cristais de sulfato de potássio a partir de ácido sulfúrico e hidróxido de potássio. Escreve

a respetiva equação de palavras e equação química.
Chemistry
1 answer:
iren2701 [21]3 years ago
3 0
Translate it to English and I would love to help u out (:
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Why does a heating curve have horizontal plateaus at certain points during the heating process? What is happening at those point
DENIUS [597]
A <span>heating curve having horizontal plateaus at certain points during the heating process means that the process occurs at increase heating. </span>
4 0
4 years ago
Which units represent density? Select all that apply A. cm³ B. g/m³ C. g/cm³ D. cm³/gm E. kg/L F. kg/cm³ G. mL/cm³
Fed [463]
<span>Out of the options here, the most suitable units that could be used for representing density would be option c) g/cm. Density is a value for mass (in this case g) divided by a value for volume (in this case cm). Option E, kg/L, would also work.</span>
4 0
3 years ago
Read 2 more answers
NEED ANSWER FAST
Korolek [52]

Answer: Option (c) is the correct answer.

Explanation:

When current passes through a wire then a magnetic field is formed. Therefore, when two wires carry current in the same direction then both the wires with have respective magnetic fields in the same direction and their total magnetic field will be large.

But when current between two wires flow in opposite direction then the magnetic field produced will also be in opposite direction. Therefore, both the magnetic fields cancel each other out. Thus, total magnetic field will be small.

As a result, wires which carry current in the opposite direction repel each other.


4 0
4 years ago
Read 2 more answers
What is the atomic mass of Si in units of amu?
tekilochka [14]
The amu would be 28.0855
8 0
3 years ago
Which statement below correctly describes the relationship between Q and K for both reactions? Are these reactions spontaneous a
nikklg [1K]

Answer:

Q < K for both reactions. Both are spontaneous at those concentrations of substrate and product.

Explanation:

Hello,

In this case, the undergoing chemical reactions with their proper Gibbs free energy of reaction are:

A->B;\Delta _rG^o=-13 kJ/mol

C ->D ;\Delta _rG^o=3.5 kJ/mol

The cellular concentrations are as follows: [A] = 0.050 mM, [B] = 4.0 mM, [C] = 0.060 mM and [D] = 0.010 mM.

For each case, the reaction quotient is:

Q_1=\frac{4.0mM}{0.050mM}=80\\ Q_2=\frac{0.010mM}{0.060mM}=0.167

A typical temperature at a cell is about 30°C, in such a way, the equilibrium constants are:

K_1=exp(-\frac{-13000J/mol}{8.314J/mol*K*303.15K} )=173.8\\K_2=exp(-\frac{3500J/mol}{8.314J/mol*K*303.15K} )=0.249

Therefore, Q < K for both reactions. Both are spontaneous at those concentrations of substrate and product.

Best regards.

6 0
3 years ago
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