Chemistry, 28.04.2021 21:30 mohayon2020

Describe the bonding you would expect to find in a coin made out of copper?

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Chemistry, 22.06.2019 06:30, khalaflaf2684

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

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Chemistry, 22.06.2019 15:00, jcox626

Describe what happens to the molecules as water goes from ice to liquid to vapor. be sure to explain what happens to the temperature during the phase changes.

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Chemistry, 22.06.2019 18:00, kingamir

Answer asap need it by wednesday morning carry out the following calculations on ph and ka of from data. i. calculate the ph of 0.02m hcl ii. calculate the ph of 0.036m naoh iii. calculate the ph of 0.36m ca(oh)2 iv. calculate the ph of 0.16m ch3cooh which has ka = 1.74 x 10-5 mol dm-3 v. calculate ka for weak acid ha which has a ph of 3.65 at 0.30m concentration vi. calculate the ka of a solution made by mixing 15.0 cm3 0.2m ha and 60.0 cm3 0.31m a-. [ph= 3.80] vii. calculate the ph of a solution made by mixing 15.0 cm3 0.1m naoh and 35.0 cm3 0.2m hcooh. [ka = 1.82 x 10-4 m]

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Chemistry, 22.06.2019 18:30, ChikiChu

When a device is used in a circuit in which the voltage is 81 v the current flowing through the device is 3 a what is the resistance of the device