The organelle that gives shape to the cell is call the cell wall
Air is a homogeneous mixture, and it is a mixture because it consists of <span>nitrogen, oxygen, carbon dioxide and other gases present in air. All of these gases mix together, and create something known as air. </span>
Answer:
Final T = 298.7K
Explanation:
In this problem, the heat given for the iron is equal to the heat that water absorbs. Using the equation:
Q = C*m*ΔT
<em>Where Q is heat given = 270000J</em>
<em>C is specific heat of substance = 0.385J/gK</em>
<em>m is mass of iron = 1000g</em>
<em>ΔT is change in temperature = Initial temperature - Final temperature.</em>
<em />
270000J = 0.385J/gK*1000g*(1000K-Final temperature)
701.3J/K = 1000K - Final T
<h3>Final T = 298.7K</h3>
15 protons (atomic number is always the number of protons) 15 electrons because no charge was mentioned so it must be the same as protons 16 neutrons because mass number is the combined number of protons and neutrons