Answer:
is the volume of the air in the balloon after it is heated.
Explanation:
To calculate the final temperature of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
(at constant pressure)
where,
are the initial volume and temperature of the gas.
are the final volume and temperature of the gas.
We are given:
Putting values in above equation, we get:
is the volume of the air in the balloon after it is heated.
The statement which is an inference is; "the velocity of the stream is greatest near the outside of a meander."
The scientific method involves observations, hypothesis, experimentation and inference. The inference is a conclusion arrived at after conducting an experiment.
Hence, an inference is not a futuristic statement or a prediction but a statement of fact as gathered through the scientific study. The statement which represents an inference among the options is; "the velocity of the stream is greatest near the outside of a meander."
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Answer:its B
Explanation:
i have done this before! and i got 100 so i hope you got all the other questions right!
Transfer of heat through direct physical contact
Answer:
H2SO4(aq) + MgO(s) → H2O(l) + MgSO4(aq)
Explanation:
We must recall that the oxides of metals are bases. These metal oxides can react with dilute acids to yield salt and water.
Bearing that in mind, we want to obtain magnesium sulfate from a metal oxide and dilute acid.
In this case we need magnesium oxide and dilute sulphuric acid. The reaction occurs as follows;
H2SO4(aq) + MgO(s) → H2O(l) + MgSO4(aq)