What environmental issues occur in our community

A 312 g sample of a metal is heated to 257.128 °C and plunged into 200 g of water at a temperature of 41.933 °C. The final temperature of the water is 67.555 °C. Assuming water has a specific heat capacity of 4.

Match the following. 1. hybrid BB 2. dominant "pure breed" 3:1 3. recessive alleles Bb 4. phenotype ratio bb

Select a depiction of a gas sample, as described by kinetic molecular theory, containing equal molar amounts of helium, neon, and krypton. each atom has a "tail" to represent its velocity relative to the others in the mixture.

The voltaic cell produces electric current from a spontaneous chemical reaction, but electrolytic reactions are not spontaneous. True False

What is occurring on the atom level that causes grain boundaries, twin boundaries, and phase boundaries to exist?

Which of the following choices would have a negative entropy change? A. N2 (g) + 3H2 (g) - >2NH3 (g) B. CaCO3 (s) - > CaO (s) + CO2 (g) C. H2O (s) - > H2O (l) D. Fe2O3 (s) + 3C (s) - > 2Fe (s) + 300 (g)

Increasing the temperature of a liquid-solid solution will:

What is the most abundant substance dissolved in sea water? magnesium chloride sodium chloride

Problem 5.32 - enhanced - with feedback the rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically μr=0.002. suppose a 180,000 kg locomotive is rolling at 22 m/s on level rails.

Gina made a poster for plastic recycling week and included this information on her poster: What corrections should Gina make? Check all that apply. Gina should put "cellulose" under "Synthetic." Gina should put "plastic" under "Natural.