Which of the following is a physical change? A. corrosion B. explosion C. evaporation D. food spoilage

How many valence electrons are in oxygen?

When an atom that has no charge loses two electrons, it becomes a 1. positive ion. 2. negative ion. 3. positive isotope. 4. negative isotope.

During the post transcriptional processing of pre-mRNA, a 5′ cap is added to an mRNA in step by step manner. Which of the following reason prevents the possibility of 5′ capping process involving methylation occurring on a DNA strand? a.

Where should you keep your glass of soda if you want it to remain fizzy

Which equation is a decompostion reaction?

A flexible container is filled with 960.0 liters of air at 38 degrees Celsius. If pressure in the container does not change, at what temperature will the container have at a volume of 350.0 liters?

Which subatomic particles are paired with their charges? 1. electron-positive, neutron-negative, proton-neutral 2. electron-negative, neutron-neutral, proton-positive 3. electron-negative, neutron-positive, proton-neutral 4.

Where do you think information is coded in a DNA molecule?

The mole fraction of carbon dioxide in a gas mixture is. 200 there are also. 251 g of nitrogen and. 322 g of oxygen in this gas mixture what is the mass of arbon dioxide in this mixture

How do you do empirical formula