First, we need to find out how much raw material is required daily by multiplying the number of units produced with the amount of raw material needed per unit:

Daily raw material requirement = Units per day * Raw material per unit
                                            = 500 * 0.75 kg
                                            = 375 kg

Next, we'll calculate the total raw material requirement for 30 days:

Total raw material requirement = Daily raw material requirement * Number of days
                                              = 375 kg * 30
                                              = 11,250 kg

Finally, we need to convert this value from kilograms to tons. We know that:

1 ton = 1,000 kg

So,
Total raw material requirement in tons = Total raw material requirement / 1,000
                                                        = 11,250 kg / 1,000
                                                        = 11.25 tons

Therefore, 11.25 tons of raw material are needed to produce the products for 30 days.
A factory produces 500 units of a product per day. If each unit requires 0.75 kilograms of raw material, how many tons of raw material are needed to produce the products for 30 days?