Answer:
The balance form of the equation is given below.
Pb(NO3)2+2KI ——-> 2KNO3 + PbI2
Explanation:
In this equation lead nitrate and potassium iodide are reactants while potassium nitrate and lead iodide are the products. In the unbalanced form of equation, two molecule of iodine are formed in the product whereas there is only one molecule of iodine is present in the reactant. So for balancing this, 2 value is put in front of potassium iodide but by putting 2, potassium is also double in the reactant so 2 is also placed in front of potassium nitrate in the product and the equation is balanced.
Answer:
Simple diffusion
Explanation:
Carbon dioxide is a small, uncharged molecule that can easily pass the lipid bilayer of the cell membrane. Other similar molecules include oxygen and water. Carbon dioxide passes the cell membrane via simple diffusion. Water crosses the cell membrane by osmosis.
You can also tell this from the image because the carbon dioxide is moving from a high concentration to a low concentration without the aid of any proteins as in active transport (a carrier pump) or facilitated diffusion (a protein with a pore)
The data with one same characteristic, different number and comparable would be best analyzed and communicated using a histogram. For example, one gene expression in different tissues or different samples.
A is hypertonic so water is leaving the cell going into the solution, the cell shrinks. B is isotonic so there is no net transfer of water. C is hypotonic so water is entering the cell from the solution, the cell expands and can rupture.
Answer:
Stars are formed such that their death led to the creation of life.
Explanation:
The Big Bang theory was developed in 1927. This theory helps to understand how the universe was created. According to this theory, hydrogen gas was created through a process of expansion and explosion. As a result, stars are formed such that their death led to the creation of life.
Earth formed around 4.54 billion years ago which is equal to approximately one-third of the age of the universe.
