Quick question

I have a question. If a question has the numbers 500kg and 3000N, how mant significant digits should the answer have?

What role do aquifers play in water cycle

Is Light a Wave or a Particle?

Write the name of chemicals that bring permanent hardness in water?

Consider the reaction zn + no - 3 → nh3 + zn (oh) 2 - 4 carried out in an aqueous basic solution. when the equation is properly balanced, what is the total charge on the product side of the equation?

A 6 kg rock is sitting at the edge of a 100 m tall cliff. What is the potential energy of the rock with respect to the ground?

Only a small portion of the organisms that lived in the geologic past have been preserved as fossils. Which condition best increases the chance that an organism will become fossilized?

Which one of the following electron transitions does not correspond to an absorbtion of a quanta of light? 1. n = 4 to n = 6 2. n = 7 to n = 5 3. n = 2 to n = 5 4. n = 2 to n = 6 5. None of the Above

Which atom has a change in oxidation number of - 3 in the following redox reaction K2Cr2O7 + H2O + S - - > KOH + Cr2O3 + SO2

Why does fluorine have a higher electronegativity than lithium?

What mineral is this? Irregularly shaped, white with nonmetallic luster, the hardness of 2.5, shows cubic cleavage and dissolves easily in water.