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2 years ago

How can a student collect and measure the volume of a gas produced ?

1 answer:

8 0

The volume of oxygen produced can be measured using the gas syringe method. The gas collects in the syringe, pushing out against the plunger. The volume of gas that has been produced can be read from the markings on the syringe.

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The polymerization of amino acids produces: DNA, RNA, carbohydrates, or polypeptides?

jok3333 [9.3K]

Answer:

it produces DNA

Explanation:

8 0

2 years ago

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What type of circuit will light the bulb

SIZIF [17.4K]

A closed circuit will light the bulb because electricity flows through it.

But on the other hand in an open circuit there is no flow of electricity current hence no light is produced

3 0

2 years ago

1. Balance the following equations and state the type of reaction.

mylen [45]

Coefficient:
a. 2 9 8 10
b. 1 2 2 1
c. 1 1 2 1

Hope this helped:)

6 0

2 years ago

For this heterogeneous system 2A(aq)+3B(g)+C(l) ↽− −⇀ 2D(s)+3E(g) 2A(aq)+3B(g)+C(l)↽−−⇀2D(s)+3E(g) the concentrations and pressu

aleksandrvk [35]

Answer : The value of thermodynamic equilibrium constant (K) is, $7.56\times 10^6$

Explanation :

Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.

The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.

As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.

The given equilibrium reaction is,

$2A(aq)+3B(g)+C(l)\rightleftharpoons 2D(s)+3E(g)$

The expression of $K$ will be,

$K=\frac{[D]^2[E]^3}{[A]^2[B]^3[C]}$

Given:

[A] = $2.71\times 10^{-2}M$

[B] = $7.00\times 10^{3}M$

[C] = $11.54M$

[D] = $13.14M$

[E] = $5.03\times 10^{4}M$

Now put all the given values in the above formula expression, we get:

$K=\frac{(13.14)^2\times (5.03\times 10^{4})^3}{(2.71\times 10^{-2})^2\times (7.00\times 10^{3})^3\times (11.54)}$

$K=7.56\times 10^6$

Therefore, the value of thermodynamic equilibrium constant (K) is, $7.56\times 10^6$

4 0

2 years ago

Please help not to fail chemistry

erik [133]

Answer:

I think the heat on the surface or the fire under the dish cost evaporation coz when the water got heat tge water evaporate or go to the upper part of dish and cool down then back to the bottom.

Explanation:

Plss correct me if im wrong

6 0

2 years ago