Explain why the brightness of the light emitted by a flashlight decreases as the flashlight moves farther away from you

A 7.70 L 7.70 L container holds a mixture of two gases at 47 ° C. 47 °C. The partial pressures of gas A and gas B, respectively, are 0.344 atm 0.344 atm and 0.893 atm. 0.893 atm. If 0.190 mol 0.

Which particle is responsible for triggering a nuclear reaction?

Why do minor parties have difficulty succeeding in the United States electoral system? A. tend to focus on only a single issue B. quickly join forces with the wrong party C. views are usually tied to strict religious doctrine D.

Which type of reaction is represented by the generic equation AB + CD - > AD + CB? O combustion decomposition single replacement double replacement

Give the actual ground-state electron configuration for copper (Cu) using the complete form. Express the electron configuration using superscripts where appropriate. For example, the configuration for Li would be entered as 1s^22s^1.

Thorium-229 is a highly radioactive isotope. Use the chart to determine the half-life of Th-229. A) 7,340 years B) 8 years C) 16 years D) 22,020 years

Which of the following is true about a municipal bond with a put option? (A) An investor will exercise the option to put the bond if yields rise significantly. (B) An investor must have the issuer's permission to put the bond.

A certain ore is 37.3% nickel by mass how many kilograms of this ore would you need to dig up to have 10.0g of nickel

What would be the change in pressure in a sealed 10.0 L vessel due to the formation of N2 gas when the ammonium nitrite in 1.00 L of 0.500 M NH4NO2 decomposes at 25.0°C?

Read the given equation. Na2O2 + CO2 → Na2CO3 + O2 What volume of O2 gas is produced from 2.80 liters of CO2 at STP?