Which substance is a compound? A. Li B. N2 C. H2 D. CO2

Discuss the environmental impacts or gas fracking.

In a DNA sample, 15% of the bases are thymine (T). What percentage of the bases in this sample are cytosine (C) ? A. 15% B. 30% C. 35% D. 85%

5. What types of waves are generated by earthquakes? A-Longitudinal and surface only B-Surface and transverse only C-Transverse and longitudinal only D-Longitudinal, transverse, and surface

How can you tell if an object has elastic properties? A.) If two people pulls on it in opposite directions it falls apart B) If two people pull on it, it maintains its original size and shape C) if two people pull on it in opposite directions, it

A sample of oxygen gas (O2) has a volume of 7.51 L at a temperature of 19°C and a pressure of 1.38 atm. Calculate the moles of O2 molecules present in this gas sample. A. 0.217 mol B. 0.866 mol C. 6.65 mol D. 0.433 mol = n

For keeping goods cold during shipment, what is an advantage of dry ice (frozen carbon dioxide) pver water ice?

Does sugar contain preservatives or other additives?

What effect does distance have on the strength of the force of gravity

A compound contains 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen (by mass). calculate the empirical formula.

100 g of water and 100g of metal sample are heated from 25 to 75. which substance requires more thermal energy to reach 75c