If atoms are made up smaller parts such as electrons, why are atoms considered the basic unit of matter

When the temperature of the water was 10°C the waterweed did not produce bubbles.

Rashid [163]

She might’ve wanted to wait for the water to reach boiling point to count the bubbles

8 0

2 years ago

1. The gases SO2, O2 and SO3 are allowed to reach equilibrium at a constant temperature. The equilibrium constant for the reacti

irina [24]

Answer:

a)

$K_2=1.3x10^{2}atm^{-1/2}$

b)

$PCl_5\rightarrow PCl_3+Cl_2$

$[PCl_5]=0.0375M$

Explanation:

Hello!

a) In this case, since we can see that the second reaction is equal to the half of the first reaction, we can relate the equilibrium constants as shown below:

$K_2=K_1^{1/2}$

Thus, by plugging in the the equilibrium constant of the first reaction we obtain:

$K_2=(1.6x10^4atm^{-1})^{1/2}\\\\K_2=1.3x10^{2}atm^{-1/2}$

b) In this case, for the described reaction we can write:

$PCl_5\rightarrow PCl_3+Cl_2$

Thus, the corresponding equilibrium expression is:

$K=\frac{[PCl_3][Cl_2]}{[PCl_5]}$

In such a way, since we know the equilibrium constant and the concentrations of PCl3 and Cl2 at equilibrium, we can compute the concentration of PCl5 at equilibrium as follows:

$[PCl_5]=\frac{[PCl_3][Cl_2]}{K}\\$

$[PCl_5]=\frac{\frac{0.20mol}{4L} *\frac{0.12mol}{4L} }{0.04}$

$[PCl_5]=0.0375M$

Best regards!

7 0

2 years ago

What are the elements and number of atoms in the compound c6h12o6?

VARVARA [1.3K]

<span>Carbon-6, Hydrogen-12, Oxygen-6
Number of atoms altogether: 24</span>

3 0

3 years ago

How do you test a hypothesis using scientific inquiry

irina1246 [14]

Once you have constructed an effective hypothesis, the next step in the scientific inquiry process is to test the hypothesis through experimentation. This is a great opportunity for students to start a science notebook, if they have not yet started recording their progress. Steps to Identifying and Conducting an Appropriate Experiment to Test a Hypothesis 1) Present Hypotheses  Make a list of all potential hypotheses to be tested. 2) Make Predictions  For each hypothesis, ask what would be true if the hypothesis were true. 3) Write the Experimental Procedure  The experimental procedure is a step-by-step recipe for the science experiment. A good procedure contains enough detail that someone else could easily duplicate the experiment. Once you have formed a hypothesis, you will need to develop your experimental procedure to test whether your hypothesis is true or false. 4) Identify the Independent and Dependent Variables  The first step of designing the experimental procedure involves planning how to change the independent variable and how to measure the impact that this change has on the dependent variable. To guarantee a fair test when conducting the experiment, make sure that the only thing changing is the independent variable. All controlled variables must remain constant. 5) Design the Experiments  How can you identify an appropriate experiment that will effectively test your hypothesis? Begin by asking yourselves, “What can I do that will give me one result if my hypothesis is true, and a different result if my hypothesis is false?” Design at least one possible experiment for each hypothesis. Be sure that each experiment tests only one hypothesis.

4 0

3 years ago

This characteristic of a sound wave changes as the volume of the sound wave changes

Ket [755]

<span>When a sound wave reaches near the ear, the outer part of the ear acts like if its a funnel, so it catches the wave and funnels it into the ear. They the wave hits the eardrum. Then the bones in the eardrum cause each other to vibrate. Then they are sensed by nerves and sends signals to the brain to interpret sound. Hope This Helps!</span>

8 0

3 years ago

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