How many calories are needed to raise the temperature of 25 grams of water form 50°C to 70°C. The specific heat of water is

1cal/g °C

A 120 ml portion of 0.4 m acetic acid is being titrated with 0.4 m naoh solution. what is the ph of the solution after 110 ml of the naoh solution has been added? the ionization constant of acetic acid is 1.8 Ã 10â5. 1. ph = 6.84 2. ph = 5.79

7. What is the difference between a measured value and an accepted value? How are these values used to determine the precision of your answer?

A solution with low Ph values feels like what? a) slippery b) Taste Sour c) have an - OH group d) turns litmus paper blue

The characteristic flame test colors of metal ions are due to atomic emission spectra. Discuss the relationship between the absoption and rmission of light and the factors responsible for flame test colors.

Mr. Brown had the class look at these two graphs and tell if the graphs were showing the same motion. Jillian said the two graphs showed different motion, but Betsy said they showed the same motion.

Consider a situation in which 211 g g of P4 P 4 are exposed to 240 g g of O2 O 2 . What is the maximum amount in moles of P2O5 P 2 O 5 that can theoretically be made from 211 g g of P4 P 4 and excess oxygen?

What is the total pressure when 0.400 g of H2, 2.00 g of N2, and 10.5 g of CO2 are injected into a 10.0 liter flask at 273 K?

The balanced chemical equation for the combustion of methane is: CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O (g) Which of the following statements concerning this chemical equation is/are correct? 1.

In one kind of nuclear reaction, two nuclei fuse, or join together, to form a larger nucleus. This kind of reaction happens only at very high pressures. Explain why such high pressures are necessary to cause these reactions to occur.

Check the approach to obtain the correct conversion equation. Use the temperature in °F to find the temperature in °C. °C