A block of wood does not allow any light to be transmitted through it. The block of wood can best be described asA. transparent.
B. opaque.
C. translucent.
D. invisible.
Answers
IT B BEING THAT A BLOCK OF WOOD IS SOILD
Related Questions
What describes a change in velocity?
If the pressure on an ideal gas is increased, what will happen to the volume of the gas?
Concentrated nitric acid used in laboratory is 68 % nitric acid by mass in aqueous solution. What should be the molarity of such a sample of the acid if the density of the solution is 1.504 g mL-1?
If a measurement is recorded as 1.2 cm, what is the smallest marking on the instrument?
Neutrons
Electrons
Answers
Answer:
Protons- positive
Electrons - negative
Explanation:
Answers
840 candies: answer
Explanation:
Answers
Three main approaches are available for observational research: controlled observations, naturalistic observations, and participant observations. The two categories of observation are qualitative and quantitative. The correct option is A.
The observation approach entails watching, either manually or mechanically, what people actually do or what happens when they buy or consume something. Information is gathered by watching processes in action. Observations might be either qualitative or quantitative. Scientists make both qualitative and quantitative observations to acquire knowledge.
Observations that describe something's "qualities" are referred to as qualitative observations. These wouldn't involve counting or measuring and would instead contain qualities like texture, color, and shape. Utilizing standard scales to count or measure is a requirement for quantitative observations.
Thus the correct option is A.
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The correct answer is:
qualitative and quantitative.
Explanation:
Observation is the rapid retrieval of information from a first source. In living beings, observation contracts the senses. In science, observation can also include the recording of data via the use of scientific tools. Qualitative observation is a personal process of collecting data or knowledge while quantitative observation is an objective process of accumulating data or information.
Answers
1) The binding energy per nucleon is 7.59 MeV/nucleon and 2) The binding energy per nucleon is 8.39 MeV/nucleon.
1) The binding energy per nucleon is as follows:
m_proton + m_neutron + m_electron - m_U
= 92*1.007276466812 + 92*5.4857990943e-4 + 143*1.008664916 - (235.0439299)
= 1.9151 u
= 931.494061 * 1.9151 MeV
= 1784 MeV
= 1784/235 = 7.59 MeV/nucleon
2) The binding energy per nucleon is as follows:
m_proton + m_neutron + m_electron - m_Cs
= 55*1.007276466812 + 55*5.4857990943e-4 + 82*1.008664916 - (136.9070895)
= 1.2338 u
= 931.494061 * 1.2338 MeV
= 1149 MeV
=1145/137 = 8.39 MeV/nucleon
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Final answer:
Water (H₂O) is an example of a covalent bond, where hydrogen and oxygen atoms share electrons to form a molecule. It is also a polar molecule and commonly acts as a solvent. Water is central in various scales of biological and environmental structures and processes.
Explanation:
Water, or H₂O, is an example of a covalent bond formation. This occurs when hydrogen and oxygen atoms join together, sharing electrons to fill their outer shells and create stability. This sharing of electrons forms a water molecule.
Furthermore, water is considered a polar molecule. Aside from covalent bonding, another characteristic of water is its ability to act as a solvent. It can dissolve gases, liquids, and solids to create different solutions, which is vital in many biological and chemical processes.
A representation of this can be seen from a hydrogen atom, to a water molecule, skin cell, liver, larger organisms like an elephant, wolf pack, up to larger ecosystems like tropical rainforests and the entire planet Earth, indicating the wide scope where water plays a crucial role.
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Which of the following shows the equation balanced?
A. 3 O2 + CS2 → CO2 + 2 SO2
B. 3 O2 + CS2 → 2 CO2 + SO2
C. O2 + CS2 → CO2 + SO2
D. 4 O2 + 4 CS2 → 4 CO2 + 4 SO2
Answers
Answer:
Look at the equation below.
→
The equation balanced is:
A. →
Explanation:
The equation balanced is:
→
This can be proved with the amount of atoms of each element in reagents and products:
Reagents:
O=6
C=1
S=2
Products:
O=6
C=1
S=2
The option that shows the that the equation is balanced is:
3O₂ + CS₂ → CO₂ + 2SO₂ (option A)
How to balance the equation?
The equation O₂ + CS₂ → CO₂ + SO₂ can be balanced as shown below:
O₂ + CS₂ → CO₂ + SO₂
There are 2 atoms of S on the left side and 1 atom on the right. It can be balanced by writing 2 before SO₂ as shown below:
O₂ + CS₂ → CO₂ + 2SO₂
There are 2 atoms of O on the left side and a total of 6 atoms on the right. It can be balanced by writing 3 before as shown below:
3O₂ + CS₂ → CO₂ + 2SO₂
Now, we can see that the equation is balanced. Thus, the correct answer to the question is 3O₂ + CS₂ → CO₂ + 2SO₂ (option A)
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