50 cm³ of 2.5 Moldovan-3 hydrochloric acid was placed in a polystyrene beaker of negative will heat capacity its temperature was recorded and then 50 cm³ of 2.50 Moldm-3 NaOH at the same temperature was quickly added with string the temperature rose by 17°C the resulting solution may be considered to have specific heat capacity of 4.2 what is an approximate value of the murder enthalpy of neutralisation of hydrochloric acid and sodium hydroxide from this experiment

What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17

Listen base your answer to the question on the information below. propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below. c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol. what is the correct structural formula for a molecule of methanethiol

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true