The elements in each group have<span> the </span>same<span> number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements. Every element in the first column (</span>group<span> one) </span>has<span> one electron in its outer shell.</span>
Answer:
Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work. ... You have to exert a force AND move something to qualify as doing work.
Explanation:
Answer:
80 mL
Explanation:
Step 1: Given data
- Initial pressure of hydrogen (P₁): 360 mmHg
- Initial volume of hydrogen (V₁): 240 mL
- Final pressure of hydrogen (P₂): 1080 mmHg
- Final volume of hydrogen (V₂): ?
Step 2: Calculate the final volume of hydrogen
If we assume ideal behavior and constant temperature, we can calculate the final volume occupied by hydrogen using Boyle's law.
P₁ × V₁ = P₂ × V₂
V₂ = P₁ × V₁/P₂
V₂ = 360 mmHg × 240 mL/1080 mmHg = 80 mL
To find the balanced reaction, you have to predict the products and write the equation first.
This will be a single replacement reaction because aluminum is an element and copper nitrate is a compound.
The reaction will be:
Al + Cu(NO3)2 -> Cu + Al(NO3)3
Now, we can balance it:
2 Al + 3 Cu(NO3)2 -> 3 Cu + 2 Al(NO3)3