Identify which one of the following is a rate: 17.5 °C17.5 °C12122 21​ 227 m227 m 2 360 km / hr60 km / hr4

Student A’s results are shown in Figure 2.What was the decrease in temperature between 0 and 160 seconds?*2 points8.2 °C8.4 °C53.2 °C55.6 °C

For a reaction with an activation energy of 65 kJ mol¯¹, by what percentage is the rate constant decreased if the temperature is decreased from 37 °C to 22 °C?

Write the ratio or rate in simplest form.Write 781 mi in 14.2 h as a rate in simplest form.

Consider this reaction:→2H3PO4aq+P2O5aq3H2OaqAt a certain temperature it obeys this rate law.rate =·1.68M−1s−1H3PO42Suppose a vessel contains H3PO4 at a concentration of 0.850M. Calculate the concentration of H3PO4 in the vessel 4.30 seconds later. You may assume no other reaction is important.Round your answer to 2 significant digits.

Caitlin’s thermometer rises 16°C in 4 hours.Expressed as a unit rate, 16°C in 4 hours isa16°C/4 h b8°C/2 hc12°C/h d4°C/h