All categories

3 years ago

The Big Bang theory is used to explain the origins of the universe. Why is this called a theory and NOT a law?

Chemistry

2 answers:

Anastaziya [24]3 years ago

6 0

Answer:

It's called a theory because it has not been proven yet. so we can not claim it to be a fact without proof.

Tomtit [17]3 years ago

3 0

Answer: There is no concrete evidence.

Explanation: If we could do an experiment and create the Big Bang and watch it happen and study it, it would be law. It's for the same reason that evolution is considered a theory. We are not watching it take place and there is no eye witness account of evolution happening because evolution happens over millions and millions of years. If we could sit here and watch the universe be created without need for simulations or theories, then it would be law.

You might be interested in

When you jump-starts a car, what happens to the stored energy in the working battery? PLEASE ANSWER

Yuri [45]

The stored energy in the battery does not work anymore.

4 0

3 years ago

4. The volume of a sample of a gas at STP is 200.0 ml. If the pressure is increased to 4.00 atmospheres (temperature constant),

Elina [12.6K]

Answer : The value of new volume is, 50.0 mL

Explanation :

Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.

$P\propto \frac{1}{V}$

or,

$P_1V_1=P_2V_2$

where,

$P_1$ = initial pressure at STP = 1 atm

$P_2$ = final pressure = 4.00 atm

$V_1$ = initial volume at STP = 200.0 mL

$V_2$ = final volume = ?

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

$1atm\times 200.0mL=4.00atm\times V_2$

$V_2=50.0mL$

Therefore, the value of new volume is, 50.0 mL

6 0

3 years ago

Who believed that a grain of sand could be divided indefinitely?

Ilya [14]

Answer:

Democritus

Explanation:

4 0

3 years ago

How much sodium bicarbonate to raise alkalinity in pool.

almond37 [142]

Answer:

A rule of thumb is that 1.5 lbs. of baking soda per 10,000 gallons of water will raise alkalinity by about 10 ppm. If your pool's pH is tested below 7.2, add 3-4 pounds of baking soda. If you're new to adding pool chemicals, start by adding only one-half or three-fourths of the recommended amount.

4 0

1 year ago

A 25.0 L tank of nitrogen gas is at 25 oC and 2.05 atm . If the temperature stays at 25 oC and the volume is decreased to 14.5 L

NeTakaya

Answer:

$\boxed {\boxed {\sf P_2 \approx 3.53 \ atm}}$

Explanation:

In this problem, the temperature stays constant. The volume and pressure change, so we use Boyle's Law. This states that the pressure of a gas is inversely proportional to the volume. The formula is:

$P_1V_1=P_2V_2$

Now we can substitute any known values into the formula.

Originally, the gas has a volume of 25.0 liters and a pressure of 2.05 atmospheres.

$25.0 \ L * 2.05 \ atm = P_2V_2$

The volume is decreased to 14.5 liters, but the pressure is unknown.

$25.0 \ L * 2.05 \ atm = P_2 * 14.5 \ L$

Since we are solving for the new pressure, or P₂, we must isolate the variable. It is being multiplied by 14.5 liters and the inverse of multiplication is division. Divide both sides by 14.5 L .

$\frac {25.0 \ L * 2.05 \ atm }{14.5 \ L}=\frac{P_2 *14.5 \ L}{14.5 \ L}$