What are the functions of a leaf?

1. to make food and control how much water is sent to the root 2. to store food and absorb water 3. to make lignin and allow the plant to grow 4. to make food and control how much water leaves the plant

Which statements are part of the safety protocol for this lab experiment?

Which is a correct statement of Newton's second law? An object in motion stays in motion, and an object at rest stays at rest unless acted upon by a net force.

On a hot day, water vapor condenses on a cold glass. Which of the following best describes what happens during the condensation process

When 6.0 L of He (g) and 10. L of N2 (g), both at 0oC and 1.0 atm, are pumped into an evacuated 4.0 L rigid container, the final pressure in the container at 0o C is: (A) 2.0 atm (B) 4.0 atm (C) 6.4 atm (D) 8.8 atm (E) 16 atm

Adding iron filings to sand

The volume of 1 mole of o2 gas at T=273k P=1atm is? A 6.02 x 10^-23 ml B 760 L C 22.4 L D 2.24 L E 224 L

There are two stable isotopes of bromine. Their masses are 78.9183 and 80.9163 amu. If the average atomic mass of bromine is 79.9091 amu, what is the natural abundance of the heavier isotope? percent abundance of 81Br __%

If 1.00 mol of argon is placed in a 0.500-L container at 20.0 ∘C, what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation) ? For argon, a=1.

Which of these is a covalent compound? 1. AICI3 2. CO 3. MgO 4. LiCI

What is a protein used for