Answer:
Explanation:
I hope this helps! :)))
The scientific method, employed ubiquitously in scientific research including biology, starts with an observation. Based on this observation, a hypothesis is formed, tested through an experiment and if the results don’t support it, the hypothesis is adjusted.
The scientific method is a systematic way researchers, including experts in biology and other sciences, approach problem-solving and exploration. It is composed of a series of well-defined steps that typically starts with an observation and a question to research about the observed situation. Based on this, the Scientist devises a hypothesis, a proposed explanation. This hypothesis is then tested using an experiment, and the results of this experiment are reported. If the results do not support the hypothesis, a new hypothesis can be proposed.
Applying these steps to the car situation would look like the following:
#SPJ12
Explanation:
To find the charge gained by the solid when one electron is removed from each of its atoms, you can follow these steps:
1. Calculate the total number of electrons in 1 gram of the solid. Since there are 4 × 10^20 atoms in 1 kg, there are (4 × 10^20 / 1000) atoms in 1 gram.
2. Multiply the number of atoms in 1 gram by the charge gained by removing one electron. Each electron has a charge of approximately -1.6 × 10^-19 coulombs.
3. The total charge gained by the solid in 1 gram is the result of the multiplication from step 2.
Let's calculate it step by step:
Number of atoms in 1 gram = (4 × 10^20 / 1000) = 4 × 10^17 atoms
Charge gained by removing one electron from an atom = -1.6 × 10^-19 C
Total charge gained by the solid in 1 gram = (4 × 10^17) × (-1.6 × 10^-19) C
Now, calculate this expression to find the charge gained by the solid in 1 gram.
The charge gained by a solid when one electron is removed from each atom can be calculated by multiplying the charge of one electron by the number of atoms in the solid.
The question asks for the charge gained by a solid when one electron is removed from each atom of the solid. The charge gained by one atom can be calculated by multiplying the charge of one electron (1.602 × 10-19 C) by the number of atoms in one gram of the solid (4 × 1020 atoms/g). To find the total charge gained by the solid in 1g, we can multiply the charge gained by one atom by the number of atoms in 1g of the solid (1 mole = 6.02 × 1023 atoms).
Charge gained by one atom = 1.602 × 10-19 C
Number of atoms in 1g = 4 × 1020 atoms/g
Total charge gained by 1g of solid = Charge gained by one atom × Number of atoms in 1g
#SPJ11
a. True
b. False
Answer:
It's true
Explanation:
An example can be observed when the people add salt on the road surface to avoid icing. The salt water mixture is frozen at approximately a temperature of -21°C and not at a temperature of 0°C as it would be in the case of water. Salt when dissolved in water releases heat, thereby contributing to defrost ice. This is the same principle that is used for car antifreeze, which is to lower the freezing point.
0.500 mole of any gas at standard temperature and pressure (STP) is equivalent to 11.2 liters. This is calculated using Avogadro's Law.
The quantity that represents 0.500 Mole at Standard Temperature and Pressure (STP) refers to the volume of gas. According to Avogadro's law, which states that equal volumes of gases at the same temperature and pressure contain an equal number of molecules, 1 mole of any gas at STP occupies a volume of 22.4 liters. Therefore, 0.500 mole of a gas at STP would occupy a volume of 11.2 liters.
Here's how you calculate this: Use Avogadro's law proportion, which is V1/n1 = V2/n2. Given n1 is 1 mole, V1 is 22.4 liters (which are standard values at STP) and n2 is 0.500 mole (your desired quantity), you can solve for V2 :
V2 = V1 * n2 / n1 = 22.4 L * 0.500 mol / 1 mol = 11.2 L.
So, 0.500 mole of any gas at STP would have a volume of 11.2 liters.
#SPJ12
The mass increases as it changes from a liquid to a solid.
The mass decreases as it changes from a liquid to a solid.
There is no mass once the substance becomes a solid