The specific heat capacity of rubidium is 0.360 j/g°c. a sample of rubidium absorbs 40.0 kj
when heated from 12.5 °c to 38.0 °c. calculate the mass of the rubidium sample.

4.36 kg rubidium.

That is; Q = mcΔT

We are given;

Quantity of heat = 40.0 kJ or 40,000 Joules

Mass of rubidium = 0.360 J/g°C

Change in temperature, ΔT = 38.0°C - 12.5°C

                                              = 25.5°C

We are required to calculate the mass of rubidium

From the formula;Q = mcΔT

mass = Q ÷ cΔT

        = 40,000 ÷(0.360 J/g°C× 25.5°C)

        = 4,357.30 g

       = 4.36 kg

Therefore, the mass of 4.36 kg rubidium.

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.