Fixed-Price. A fixed-price agreement is not a cost-reimbursement contract. The contractor estimates the total cost of materials and labor, and includes that in his bid price, and the contract is generally awarded to the lowest bid.The total pay the contractor receives covers these costs.ixed-Price. A fixed-price agreement is not a cost-reimbursement contract. The contractor estimates the total cost of materials and labor, and includes that in his bid price, and the contract is generally awarded to the lowest bid.
Swirl to mix. By adding the soap after the water, you won't end up with a lot of bubbles at the top. Fill the rest of the dispenser with water, leaving a little space at the top of the container for the pump. Screw on the lid/pump and shake. Pump the dispenser a few times to get the foaming started.
Originally Answered: Why does soap create bubbles? The reason some liquids mix while others don't has to do with the polarity of the molecules. Polar molecules will make hydrogen bonds with each other, apolar molecules don't. When a polar and an apolar liquid are mixed the polar molecules will make hydrogen bonds and stick together. This will separate them from the apolar liquid. Examples of polar liquids are water and ethanol (alcohol). Oils are examples of apolar liquids. Water and alcohol mix, water and oil doesn't. So how does soap clean oils? Let's look at the molecule structure of a soap: