What is the purpose of forming a scientific hypothesis?

It starts a plan to test your idea

It provides the answer to your investigation

It allows you to prove your idea is correct

Which of the following displacement reactions can occur? ) A) CuSO4 + Ag Cu + AgSO4 ) B) 2Ba (NO3) 2 + Zn 2Ba + Zn (NO3) 2 ) C) 2AgNO3 + Zn 2Ag + Zn (NO3) 2 ) D) MgSO4 + Zn ZnSO4 + Mg ) E) 2NaNO3 + Zn 2Na + Zn (NO3) 2

The chemical equation below shows the formation of ammonia from nitrogen and hydrogen gases. N2 + H2 NH3 However, the equation shown is not balanced. Which of the following particle diagrams shows the correct balanced form of the equation?

Calculate the number of molecules in 0.75 moles of CH₄. x 10²³ molecules

The total number of the protons and neutrons is the atomic Charge Weapon potential Evaporation rate Weight

What is the purpose of a unit conversion?

The vapor pressure of 10 mL of ethanol at 20C is 5.85 kPa. What is the vapor pressure of 20 mL of ethanol at the same temperature?

How do you express 0.00026 in scientific notation

All organisms need instructions to specify their traits. The instructions, or code, that is responsible for all the inherited traits of an organism.

1. Are state changes chemical or physical changes? Provide an example of a state change and explain why it is a chemical or physical change.

What is the morality of a 750.0 milliliter solution containing 2.5 miles of solute?