Explanation:
Atomic number , protons and electrons have the same value / their value is same .
But for the neutron there is no specific technique. You have to remember the neutrons of every element
a sample contains 4.0x10^25 molecules of hydrogen peroxide (H2O2) how many hydrogen atoms would be in the sample?
please answer it I really need this answer to pass thank you
Answer:B
Explanation:
How many water molecules would be produced from the dehydration reactions that are associated with making a protein that has a primary structure composed of 152 amino acids
Answer:
How many water molecules would be produced in making a polypeptide that is 72 amino acids long by dehydration reactions? 71; one less than the number
Explanation:
A balloon containing 0.0400 mol of a gas with a volume of 500 mL was expanded to 1.00 L.
Answer the questions and round answers to nearest hundredth place.
Which equation should you use to find the amount of gas added?
V subscript 2 equals StartFraction V subscript 1 n subscript 2 over n subscript 1 EndFraction.
n subscript 2 equals StartFraction V subscript 2 n subscript 1 over V subscript 1 EndFraction.
n subscript 2 equals StartFraction V subscript 1 n subscript 1 over V subscript 2 EndFraction.
Answer:
b
Explanation:
answered it correctly
Answer:
B and .08 Moles
Explanation:
What is the product of the reaction?
Answer: In a chemical reaction substances elements and compounds called reactants are changed into other substances compounds and elements called products.You can't change one element into another in a chemical reaction that happens in nuclear reactions.
Explanation:
The video is Continental Drift By- Mike
Answer:
Hahah
Explanation:hahah
Which button is a shortcut for scientific notation on
a scientific calculator?
Answer: For many calculators, including the TI –83 and TI 83 Plus, the [EE] button is used to enter scientific notation. The [EE] button can be found in yellow above the comma key [,].
The solubility product for an insoluble salt with the formula M2X3 is written as ________, where s is the molar solubility
Answer:
36s^5
Explanation:
We have;
M2X3 (s)------> 2M^3+(aq) + 3X^2-(aq)
If [M^3+(aq)] = [X^2-(aq)] = s
We then have;
Ksp = (2s)^2 * (3s)^3
Ksp = 4s^2 * 9s^3
Ksp = 36s^5
Note that Ksp is known as the solubility product. It is an equilibrum equation that shows the solubility of a solute in water.
As energy from the Sun hits the ocean, that energy transforms the water in
the ocean into -
F water vapor in the atmosphere
Gwater vapor under the ground
H solid ice in the atmosphere
J solid ice under the ground
Answer:
F
Explanation:
i dont know how water vapor would hit the ocean and go underground? so i think its F
which element is more magnetic? vanadium or manganese
PLEASE HELP!
will make brainliest
Answer:
Here is a clue
Explanation:
A convenient ion exchange separation particularly designed for the separation of iron and vanadium or mangenese from cobalt has been developed for the determination of iron, cobalt and manganese or vanadium in soft magnetic alloys. After an anion exchange separation of their chloride complexes these elements are determined by a back titration of an excess of EDTA with a standard copper solution using calcein as an indicator under ultraviolet light.
Answer:
I THINK it's vanadium but I'm not 100% sure
Explanation:
All circuits must have three things: energy source, wire, and a generator Lesson 5.04 Question 7 options: True False
Answer:
True
Explanation:
Sorry i'm late probably but i answered this for you :) i hope this helps though
It is true that all circuits must have three things: energy source, wire, and a generator.
What is a circuit?A circuit in electronics is a complete circular path through which electricity flows.
A basic circuit is made up of a current source, conductors, and a load. The term circuit can be used broadly to refer to any fixed path through which electricity, data, or a signal can travel.
Circuits are classified into five major types: closed circuits, open circuits, short circuits, series circuits, and parallel circuits.
An electric circuit consists of a device that provides energy to the charged particles that make up the current, such as a battery or a generator, as well as devices that use current, such as lamps, electric motors, and so on.
All circuits must include three components: an energy source, wire, and a generator.
Thus, the given statement is true.
For more details regarding a circuit, visit:
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Suppose a species of snake is living in a certain area. Some of the snakes in the population are black and some are orange. Over time, the area changes and the orange snakes have a harder time blending into the environment. This makes it difficult for the orange snakes to catch food.
According to Darwin’s theory of evolution, what will most likely happen to this snake population over time?
Most orange snakes will survive and reproduce, passing on their traits to their offspring. Few black snakes will remain in the population.
Most black snakes will survive and reproduce, passing on their traits to their offspring. The number of orange snakes in the population will not change.
The black snakes will survive and reproduce, passing on their traits to their offspring. Few orange snakes will remain in the population.
Most orange snakes will survive and reproduce, passing on their traits to their offspring. The number of black snakes in the population will not change.
Answer:
The black snakes will survive and reproduce while the orange snakes die out.
Explanation:
The orange snakes will be easier to see by their prey and predators, and therefore will die out while the black snakes thrive because of their camouflage.
Answer:
the black snakes will survive and reproduce, therefore, passing their traits to their offspring, while few orange snakes will remain in the population.
Explanation:
A student wants to make HgS. They add 23 grams of Hg and 0.95 grams of S. How many moles of each element have they added?
How is chemistry used in chemical engineering?
Answer: Chemical engineers use chemistry and engineering to turn raw materials into usable products, such as medicine, petrochemicals, and plastics on a large-scale, industrial setting. They are also involved in waste management and research. They may be involved in designing and constructing plants as a project engineer.
Explanation:
how many liters of o2 do you have if you have 5.8 moles of o2
Answer:
130 Liters
Explanation:
if 1 mol is 22.4 L, then 5.8 mol is 130 L (129.92 but use sig figs)
1. How are the colors of the rainbow related to white light from the sun?
White light contains only the four secondary colors of the rainbow.
White light does not contain any of the colors of the rainbow.
White light contains only the three primary colors of the rainbow.
White light is made up of all the colors of the rainbow.
Answer:
white light is made up of all colors of the rainbow
Explanation:
The white light of the sun is made up of all the colors of the rainbow. Therefore, option (4) is correct.
How is a rainbow formed?A rainbow can be described as a meteorological phenomenon that is caused by refraction, reflection, and dispersion of light in water results in a spectrum of light appear in the sky. It occurs in the form of a multicolored circular arc in the sky directly opposite the Sun.
Rainbows can be full circles but we normally see only an arc of illuminated droplets above the ground. In a primary rainbow, the arc indicates red on the outer and violet on the inner side. When the light is refracted when entering a water droplet, then reflected inside the back of the droplet and refracted again.
When the light enters a water droplet, it slows down and bends as it goes from air to denser water. The light reflects back the inside of the droplet and when light exits the droplet, it creates a rainbow.
Learn more about rainbow formation, here:
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What happens when cells are exposed to radioactivity?
Answer:
when cell is exposed to radiation we get brain tumour or cancer.
Answer:
Radioactivity is typically a high-energy wave that passes through cells and causes damage to them. However, there are different types, and they have very different effects on our body.
First, we have alpha particles. They're the biggest of all the types of radiation particles, therefore lacking the energy and speed to penetrate your skin, and typically won't do much damage from outside your body. Inside you body, however, it will wreak havoc on your sensitive tissues, and cause severe damage to cells and DNA. These situations typically happen in unfortunate events where a person inhales or swallows an alpha-emitter.
Next, we have beta particles. These are typically smaller than alpha particles, and hence have more speed. They can penetrate skin and get into our body but are typically less damaging to our inside tissues due to their ionization being weaker than those of alpha particles. They can also typically be stopped by a layer of clothing or a thin sheet of aluminum, but be prepared for some damage if the beta particles get inside your body through inhaling beta-emitters, for example.
Coming up are gamma rays, which are packets of energy like photons that are similar to visible light but have much, much higher energy. These are typically known as the most dangerous of radioactivity, due to their energy that will absolutely rip apart and destroy DNA or cells, and their incredible penetrative energy that will take at least a few meters of dense materials like lead or even concrete to stop.
Finally, we have X-rays. Similar to gamma rays, they are also little photons that act like visible light but have a lower energy than gamma rays, hence having less penetrative power. They are most known for their uses in medicine in X-ray scans to see the insides of a patient, or for their uses in CT scans to diagnose patients.
Hope this helped!
is red sus ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
Answer:
yes
Explanation:
very
Answer:
Yes a billion percent
Explanation:
What will happen to the volume of a gas if the Kelvin temperature of the gas is reduced to 1/4 of the original temperature and the pressure of the gas is halved?
The volume of the gas will be 1/8 of the original volume.
The volume of the gas will remain the same.
The volume of the gas will be 1/6 of the original volume.
The volume of the gas will be half of the original volume.
Answer:
the volume of the gas will be 1/8 of the original value
Explanation:
Organs ____.
A. Perform functions that tissues cannot carry out on their own
B. are made of only one type of tissue
C. only exist in animals
D. are less complex than the tissues which make them
Answer:
B are made of only one type of tissue
Explanation:
Idon 't know if this correct I'm not sure
If I have 3 liters of solute, and 4 liters of solvent how many liters in solution do I have?
Answer:
seven litres i
i.e three litres plus four litres
I need help with this science question
Answer: 60 degrees Celsius
Explanation:
What does it mean when someone has done multiple trials? A. They have performed an experiment once and reported their findings. B. They have performed a scientific experiment more than once. C. They have performed an experiment that can only be performed once. D. They have designed an investigation to answer a question.
A. They have performed an experiment once and reported their findings.
Explain functional diversity in your own words. Include an example.
Answer:
Functional diversity is a wide range of individuals who have unique selves in one community.
Someone help me please!!!!!!
How many moles, of SiC is produced from 5.0 mol C?
SiO2 + 3C → SiC + 2CO
Answer:
1.67 moles SiC
Explanation:
Given Rxn SiO₂ + 3C => SiC + 2CO
Given mass => 5 moles C => ? moles SiC will be formed
Mass (moles) SiC yield = 1/3(5moles) = 1.67moles SiC
Solution Analysis:
Look at the balanced equation and note the coefficients of the given and unknown. In the above case, the balanced equation shows 3 moles Carbon to 1 mole Silicon Carbide. Since the coefficient for SiC is smaller than the coefficient for C then one should get a yield of SiC smaller than moles of C given. To calculate the yield based on these two compounds make a ratio of coefficients such that when multiplied by the given (5 moles in this case) one obtains a number smaller than 5. That is, 1/3(5 moles) = 1.67 moles SiC. Note that the moles of SiC (=1.67) is smaller than moles of C (=5 moles). You certainly would not get a smaller number than 5 if you used the ratio 3/1(5) moles = 15 moles. Wrong!
Here’s another example:
Given Rxn => 3H₂ + N₂ => 2NH₃
Given 7 moles H₂ calculate the moles of NH₃ produced.
Solution:
Note the known is moles H₂ and NH₃ the unknown. From the balanced equation note the coefficient of NH₃ is smaller than the coefficient for H₂. Therefore using the coefficients of H₂ (3) and NH₃ (2) form a ratio such that when multiplied by the given 7 moles one gets a smaller number (the answer needed).
Therefore, mass (moles) NH₃ produced = 2/3(7) moles NH₃ = 3.33 moles NH₃ produced from 7 moles of H₂. 3.33 < 7 as defined by balanced equation.
Rule of Thumb...
When working equation problems, first convert all given data to moles and then use the ratio of coefficients to make the given smaller or larger as defined by equation. Then, if needed, convert moles to desired dimension for problem given.
Question 14 (4 points)
(04.04 MC)
Which of the following describes the interrelated nature between photosynthesis and cellular respiration? (4 points)
A)They together help to lower the percentage of carbon dioxide in nature.
B)They both help increase the fossil fuel availability for humans.
C)They together help recycle important elements in nature.
D)They both help lower our carbon footprint.
C They together help recycle important elements in nature.
This is because photosynthesis removes carbon dioxide and creates oxygen while cellular respiration does the opposite. This results in no increase or decrease in any of the elements, and therefore means there needs to be a cycle.
What is the [H3O+] in pond water having a pH of 4.05?
Explanation: pH is a measure of whether water is acidic or basic. Fish have an average blood pH of 7.4, so pond water with a pH close to this is optimum. An acceptable range would be 6.5 to 9.0. Fish can become stressed in water with a pH ranging from 4.0 to 6.5 and 9.0 to 11.0.
True or False.There is a chemical difference between the gaseous and liquid state of the same substance.
A quantity of gas occupies a volume of 804 mL at a temperature of 27 °C. At what temperature will the
volume of the gas be 402 mL, assuming that there is no change in the pressure?
Answer:
T₂ = 150 K
Explanation:
Given data:
Initial volume of gas = 804 mL
Initial temperature = 27°C (27+273=300 K)
Final temperature = ?
Final volume = 402 mL
Solution:
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
T₂ = V₂T₁/V₁
T₂ = 402 mL × 300 K / 804 mL
T₂ = 120,600 mL.K / 804 mL
T₂ = 150 K
I NEED THIS ANSWER A.S.A.P
Obsidian is (a)n ____________ rock because it forms above the ground
(a) non-foliated
(b) foliated
(c) intrusive
(d) extrusive
