H2PO4- acts as a proton donor, whereas HPO42- serves as a proton acceptor. Step 1: Determining hydrogen ion donors and acceptors in the reaction displayed: H2PO4- is predisposed to release a H+ ion to yield HPO42-. On the other hand, HPO42- is inclined to accept a H+ ion, producing H2PO4-. The process of an acid in a water solvent is characterized as dissociation: HA ⇔ H+ + A- where HA denotes a proton acid. Therefore, H2PO4- = HA and HPO42- = A-. Acids are recognized as proton donors, which is why H2PO4- donates protons and HPO42- accepts them.
To determine the mass of the lead piece, we use the following equation: Q(heat) = mC delta T, where Q equals 78.0 j, M is the mass we want to find, C is the specific heat capacity (0.130 j/g/C), and delta T shows the temperature difference, set at 9.0 c. Rearranging the formula to solve for M gives us M = Q / c delta T. By substituting in the values, we conclude that M = 78.0 j / (0.130 j/g/C * 9.0 C), calculating this gives us a mass of 66.7 g of lead.
An r-selected species has a significantly faster reproductive rate compared to K-selected species.
The focus of r-selected species is on quick maturation and reproduction. They are likely to breed during short periods when water supply is available, thus enhancing their survival chances.
Conversely, K-selected species prioritize nurturing their young and tend to reproduce later. Due to the longer maturation time before breeding, by the time K-selected species are ready, the water supply may be depleted, leading to lower survival odds.
Hope this clarifies!
If you have more questions, don’t hesitate to ask! Have a fantastic day!:)
~Collinjun0827, Junior Moderator
Response:
CRYSTAL
A LARGE NUMBER OF ATOMS ORGANIZED IN A REGULAR STRUCTURE
1:1
Reasoning:
Answer:
The vehicle travels 660 feet
Explanation:
Initially, convert the speed into Feet per second
The car's speed is 90 mi/hr
1 mi = 5280 ft
For 90 miles, we calculate 90 x 5280 = 475,200 feet
1 hour = 60 minutes
1 minute = 60 seconds
Therefore,
1 hour = 60 x 60 seconds = 3600 seconds
Speed is defined as the distance covered by an object over time. The speed formula is:
... given
Speed = 132 ft/sec
Thus, time = 5 seconds
Distance = 660 feet
