Answer:
atoms of the same element that have different masses due to their
varying numbers of neutrons
Explanation:
Answer:
1/8
Explanation:
From;
Nt/No = (1/2)^t/t1/2
N= amount of dimethylether present at time t
No= amount of diethylether present at time t=0
t= time taken for N molecules of diethylether to remain = 4710 seconds
t1/2 = half-life of diethylether = 1570 seconds
Substituting values;
Nt/No = (1/2)^4710/1570
Nt/No = (1/2)^3
Nt/No= 1/8
Hence after 4710 seconds only 1/8 molecules of dimethylether will remain
<span>6.
Because the general formula for alkenes is CnH2n</span>
<h3>
Answer:</h3>
1031.4 Calories.
<h3>
Explanation:</h3>
We are given;
Mass of the copper metal = 50.0 g
Initial temperature = 21.0 °C
Final temperature, = 75°C
Change in temperature = 54°C
Specific heat capacity of copper = 0.382 Cal/g°C
We are required to calculate the amount of heat in calories required to raise the temperature of the copper metal;
Quantity of heat is given by the formula,
Q = Mass × specific heat capacity × change in temperature
= 50.0 g × 0.382 Cal/g°C × 54 °C
= 1031.4 Calories
Thus, the amount of heat energy required is 1031.4 Calories.
Answer:
I believe- If there is more metal for the magnet to reach for, then the strength will grow but it may be harder to pick up off of a surface depending on the weight of the nail. If it is a light nail, it would be more efficient for a quick result in having the magnet to pick it up
Explanation: