How much energy is required to raise the temperature of 2 kg of iron from

20°C to 23°C? (Refer to table of specific heat values.)

O A. 2.7 J

O B. 900 J

O c. 2700 j

O D. 1.35

Mars's orbital speed is 6 km/s greater than that of Earth. True or false?

How many Al atoms in the formula: 2 Al2 (CO3) 3 2 4 6 12

What is most likely to be used in a garment factory to solve problems like defective inputs, broken machine parts, or a worker's lack of skills to produce a specific type of garment?

What is the phase change that occurs when a soild becomes a liquid

How many moles of cacl2 are in 250 ml of a 3.0 m of cacl2 solution?

How does ease of oxidation correlate with activity? Do highly active metals tend to donate electrons or accept electrons from other metals?

A horizontal row of elements in the periodic table is known as a group or period

When forces attracting solvent particles to each other are broken, what is provided for a solution? energy for the solute to precipitate space for the solute in the solvent inertia for the solute to move into the solvent nothing is provided

What occurs when a magnesium atom becomes a magnesium ion?

Two electrons are shared equally in bromine. what type of bond is represented between the bromine atoms in this Lewis structure