I think the answer is <span>B. The sun's gravitational pull on Planet A is equal to its gravitational pull on Planet B because distance does not affect gravity.
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Answer:Atoms of a particular element must have the same number of protons but can have different numbers of neutrons. When an element has different variants that, while all having the same number of protons, have differing numbers of neutrons, these variants are called isotopes.
Explanation:
Answer:
Concepts: Physical Forces
- In order for an object to be balanced, then it must be in equilibrium which means that no additional forces are being exerted.
- A ball sitting motionless would result in a balanced force that exerts no additional forces.
The correct answers :
It increases with a decrease in the concentration of H₂(g).
It decreases with an increase in the concentration of S₂(g).
It decreases with an increase in the concentration of H₂(g).
<h3 /><h3>Further explanation</h3>
Forward reaction : rate to form product
In equilibrium :
The product decreases ⇒ system will move from left to right(forward reaction)
The product increases ⇒ system will move from right to left(reverse reaction)
Pure compounds are those compounds that have single molecule in their composition. Addition of even a one more molecule makes it impure.
Example of pure compound is water and impure compound is glycerine (contains mixture of hydrocarbons).
Three commercial products having pure compounds with its list of ingredients are:-
1. Gatorade - water (H2O), sugar, dextrose, citric acid (C6H8O7), salt (NaCl), monopotassium phosphate (KH2PO4) and sucrose acetate isobutyrate (C40H62O19).
2. Smart Water - calcium chloride (CaCl2), magnesium chloride (MgCl2), and potassium bicarbonate (KHCO3).
3. Nestle's Pure Life's list - calcium chloride (CaCl2), sodium bicarbonate (NaHCO3) and magnesium sulfate (MgSO4).
