a pure aluminium block with a mass of 10g is heated so that its temperature from 20C to 50C. The specific heat capacity of aluminium is 8.99 x 10^-1 J/gK. which expression gives the heat energy change in kJ

What's the grand formula mass of Fe (NO3) 3

If two electrically charged objects repel one another, which statement must be true? One object has more electrons, and the other has more protons. Electrons will flow from one object to the other when they touch each other.

As4S6+O2->As4O6+SO2 blanced equation

How would the following solid substances be classified? The choices are metallic, ionic, or molecular. C6H12O6

Under which conditions of temperature and pressure would helium behave most like an ideal gas? (1) 50 K and 20 kPa (3) 750 K and 20 kPa (2) 50 K and 600 kPa (4) 750 K and 600 kPa

Which of these formulas corresponds to that of a straight-chain alkane A) C5H10 B) C6H12 C) C5H12 D) C7H14

How many nonbonding electron pairs are there in the lewis structure of the peroxide ion, o22-?

How many ions that have a + 1 charge will bond with an ion that has a - 2 charge? one two three four

Convert: 65 kg to mg 65,000 mg O 65,000,000 mg O 65 mg

F. How many representative particles are in 6.78 moles of sucrose C12H22011?