Explanation:
from
de Broglie wavelength= h/ mv
substitute the values
joules= mass(kg) × acceleration (m/s^2) × distance(m)= kgm^2/s^2.
sorry I don't have my calc with me
The balanced reaction that describes the reaction between methane and oxygen to produce water and carbon dioxide is expressed CH4 + 2 O2 = CO2 +2H2O. Hence for 2 moles of methane used, 4 moles of oxygen are needed to react completely.
Answer:
82.18% is the mass percentage of bromine in the original compound.
Explanation:
Mass of AgBr = 1.1166 g
Moles of AgBr =
According to reaction, 1 mole of AgBr is obtained from 1 mole of bromide ions , then 0.0059466 moles of AgBr will be formed from :
of bromide ions
Mass of 0.005939 moles of bromide ions :
0.0059466 mol × 79.90 g/mol = 0.4751 g
Mass of the sample = 0.5781 g
Mass percentage of bromine in sample :
82.18% is the mass percentage of bromine in the original compound.
Answer:
1. Land 2. open 3. broken 4. Lava matter 5. Force of the plates
An electromagnet is a device in which, by electric current, the magnetic field is produced. Increase the number of coils and increase the strength of the current, thus, increasing the strength of an electromagnet.
The correct option is B.
<h3>What is an electromagnet?</h3>
An electromagnet is a device that consists of a magnetic core encircled by a coil, through which an electric current is carried to magnetize the core.
Wherever controllable magnets are required, such as in devices where the magnetic flux must be adjusted, reversed, or switched on and off, an electromagnet is utilized.
Thus, the correct option is B, increasing the number of coils and increasing the strength of the current.
Learn more about electromagnet, here:
brainly.com/question/13803241