Answer:
SnO2 + 2H2 + energy ➡️ Sn + 2H2O
Explanation
Answer:
Molarity is a unit for expressing the concentration of a solution
Explanation:
Molarity is used to express the concentration of a solution. Also known as molar concentration, molarity is the number of moles of solute (the material dissolved) per liter of solution. It measures the concentration of a solution. The molarity of a solution is calculated by taking the moles of solute and dividing by the liters of solution. Hence, Molarity (M) indicates the number of moles of solute per liter of solution (moles/Liter) and is one of the most common units used to measure the concentration of a solution.
Molarity is commonly expressed as molar. Molar also refers to the unit of concentration called molarity, which is equal to the number of moles per liter of a solution. In chemistry, the term most often refers to molar concentration of a solute in a solution. Molar concentration unit also implies the units mol/L or M.
How does the picture show that the inner core spins faster than the outer core?
Answer:
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Explanation:
The <em>blue whale </em>is the largest animal on Earth. The length of a blue whale is about 25 m, although is is said the largest confirmed measure is 29.9m.
The<em> tiny frogs </em>measure about 10mm.
You can estimate the number of tiny frogs that have the same <em>length</em> as a blue whale dividing the approximate average length of a blue whale by the approximate average length of the tiny frogs.
First convert 25m to mm:
- 25m × 1,000mm/m = 25,000 mm
Now, divide:
Hence, about 2,500 <em>tiny frogs sitting next to each other would measure the same length as a blue whale</em>.