Answer:
Bq
Explanation:
The number of decays per second, or activity, from a sample of radioactive nuclei is measured in becquerel (Bq), after Henri Becquerel. One decay per second equals one becquerel.
The radioactive decay has been measured as decay per second by becquerel (Bq).
Radioactive decay has been given as the loss of energy by the nucleus. The release of energy has been in the form of radiation. The varying energy radiations have been termed alpha decay, beta decay, gamma decay.
The decay has been performed by unstable nuclei with the emission of multiple particles. The decay unit has been given by Henri Becquerel. The unit has been the determination of the decay performed per second and has been given by becquerel (Bq).
Thus, the unit for the measurement of radioactive decay has been becquerel (Bq).
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How many Carbon atoms are shown in the reactants? How many C atoms are shown in the products?
Answer:
Q) How many Carbon atoms are shown in the reactants
Ans) The reactants have one carbon atom
Q) How many C atoms are shown in the products?
Ans) there is one atom on the product side
HELLP: WHAT IS THE 10 ORGANIZATIONS OF MATTER???
WILL GIVE BRAINLEST
molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.
In a water molecule, what type of bond forms between the oxygen and hydrogen atoms
What is the relationship between electrons and elements with
negative oxidation numbers? between electrons and elements
with positive oxidation numbers?
Explanation:
The higher its electronegativity, the more an element attracts electrons. The atom with higher electronegativity, typically a nonmetallic element, is assigned a negative oxidation number, while metallic elements are typically assigned positive oxidation numbers.... Hope it is useful brainliest plz if it was useful....
The relationship between electrons and oxidation number has bee the negative oxidation number implies the gain of the electron, while positive oxidation number implies the loss of electron by elements.
The oxidation number has been defined as the number of electrons lost or gained by an element to form a chemical bond. The elements that lose electrons are assigned positive oxidation number.
The elements that gain electrons to form a chemical bond are assigned a negative oxidation number.
The relationship between electrons and oxidation number has bee the negative oxidation number implies the gain of the electron, while positive oxidation number implies the loss of electron by elements.
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Mars is red due to red soil rich in iron oxide (rust). Is the oxidation of soil to rust a PHYSICAL or CHEMICAL change How do you know?
Identify the reactant(s) in the chemical reaction, CO2 + H20 --> H2CO3. *
A. CO2, H20, and H2CO3
B. CO2 and H20
C. H2CO3
Answer:
The correct answer is B. From the chemical reaction, the reactants are carbon dioxide and water. Reactants are the substances that take part in the chemical reaction which, as a result, produces new substances called the products
Explanation:
Hope it helps
Select the most likely product for this reaction:
Upper K subscript 2 upper C upper O subscript 3 (a q) plus upper C upper O subscript 2 (g) right arrow question mark.
K2CO3(aq) + H2O(l)
K(s) + H2(g) + O2(g)
K(s) + CO3(g) + H2
Answer:
The answer is A- K2CO3(aq)+H2O(I)
Explanation:
The person who made this question gave the answer so...eh??
Answer:
A) K2CO3(aq) + H2O(l)
Explanation:
Calculate the number of Oxygen atoms in Imole of 02
Answer:
two oxygen atoms
One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms.
Explanation:
A cell is placed in a salt solution that has the same concentration as the inside of the cell. What will happen to the cell?
A) The cell will contract.
B) The cell will expand slightly.
C) The cell will burst.
D) The cell will remain the same size.
Answer:
d
Explanation:
eye is an organ why????
Answer:
The eye is an organ that detects light and sends signals along the optic nerve to the brain.
Explanation:
In humans, the eye is a valuable sense organ that gives us the ability to see. It allows for light perception and vision, including the ability to differentiate between colors and depth.Although small in size, the eye is a very complex organ. The eye is approximately 1 inch wide, 1 inch deep and 0.9 inches tall. The human eye has a 200-degree viewing angle and can see 10 million colors and shades. Humans have two eyes which allows us to have better depth perception and binocular stereopsis.
Hope this helps
what is gold on the periodic table of element
Answer:
Gold is element 79 and its symbol is Au.
Please help fast. I will give brainliest!
Answer:
c=-1+x=varible+a=(5)^3
Explanation:
facts
What do you understand by a chemical reaction
Answer:
A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
How many moles of gas would occupy 22.4 L at 273K in one arm?
Answer:
1 mol
Explanation:
Using the general gas law equation as follows:
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
According to the provided information in the question;
V = 22.4L
T = 273K
P = 1 atm
R = 0.0821 Latm/molK
n = ?
Using PV = nRT
n = PV/RT
n = (1 × 22.4) ÷ (0.0821 × 273)
n = 22.4 ÷ 22.4
n = 1mol
Which process occurs when sand particles settle out of the water or
wind and are deposited as sediment?
A. cementation B. photosynthesis
C. deposition
What atoms in water are attracted to Chlorine?
Answer: hydrogen and oxygen
Explanation:
true or false : Color Changes are used to show reaction completion
Answer:
True
Explanation:
It means the reaction is occuring.
Which is the best example of plant tissue?
A:
B:
C:
D:
(Please look at the pictures to answer if its wrong I may have a chance to fail please be nice and help)
Explanation:
all are a good example of plant tissue but from my side I think it is B.
your well-wisher
The sound of a trumpet ECHOES off a nearby mountain. This is which type of wave interaction?
Answer:
reflection
Explanation:
wave reflection is when a sound bounces off something it cannot go through, like echoing
When combined, two gases have a pressure of 75.54 atm. If one has has a pressure of 2.90 atm, what is the pressure of the second gas?
Your answer must me rounded to the second decimal place. (Dalton's)
Answer:
The pressureof the secondone is 2.5 atm
Explanation:
hope this helps
A child drops a ball from a bridge. The ball strikes the water under the bridge 2.0s later. What is the velocity of the ball when it hits the water
Answer:
20m/s
Explanation:
Given that :
Time, t = 2 seconds
Using the relation :
v = u + at
a = g is positive (downward)
V = final velocity
u = initial velocity = 0
v = u + gt
v = 0 + 10(2)
v = 20 m/s
brainley.
How is Earths crust recycled?
I think it's the last one
(and I'm so sorry if I'm wrong)
Answer:
The answer is D
Explanation:
The rest of them are not cycles.
If I have 38g of MgCl2, how many moles do I have?
Answer:
0.3991
Explanation:
no. of moles = mass/molar mass.so lets get the molar mass of MgCl2
(Mg=24.305 and Cl=35.453) so the molar mass of MgCl2= 24.305+(2*35.453)
molar mass of MgCl2= 95.211
now lets get the no of moles:no of moles=38g/95.211=0.3991
OMG PLEASE HELP ME :(
Answer:
D) The gravity on the moon is one sixth the gravity of Earth.
Explanation:
Western regions Facts
Which of the following elements has the lowest ionization energy?
Question options:
A)
Hydrogen
B)
Beryllium
C)
Argon
D)
Helium
Answer:
A
Explanation:
It has the lowest ionisation energy
Answer:
Beryllium
Explanation:
The maximum water vapor that air can hold at 30°C is about 30 grams/cubic meter. If the humidity of the air is currently 6 grams/cubic meter at the same temperature, the relative humidity is
if a magnet is broken which one of the following remains unchanged in each part mass, magnetisation, length
Explanation:
magnetization
coz it will still have two pols that is north and south pole
Look at this glass of soda. Use your knowledge of thermal energy transfer to explain how heat is affecting the following things: ice, soda, glass, and surrounding air.
Explanation:
Technically, the ice cube melts because the water cools down. This may sound ridiculous at first, but you must consider the fact that the ice melts because it has drawn "heat" (energy) from its surroundings. The "surroundings" being the air and water that surround it (but the water's more important since it's a better conductor of thermal energy).
The surrounding air looses energy while the ice in the glass gains energy.
We know that thermal energy is transferred from a hotter body to a cooler body. If we look as the glass, we will notice that the surrounding air has a greater energy compared to the contents of the glass. The surrounding air looses this energy resulting in the condensation of water vapor in air around the glass.
Similarly, the ice in the glass gains energy and melts. A change of state occurs from solid to liquid as a result of the energy absorbed from the surrounding air.
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Cells are made of many parts, or , that help the cell do its job. Each cell organelle has a specific function, or
Answer:
Organelles; role.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life. A unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells. Generally, cells have the ability to independently replicate themselves. In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles with their respective functions in all living organisms such as trees, birds, and bacteria include;
1. Nucleus : it controls all the activities taking place in the cell and the synthesis of proteins.
2. Mitochondria : it provides all the energy required in the cell by transforming energy forms.
3. Lysosomes : they are responsible for absorbing materials and breaking the materials taken in by the cells.
4. Chromosomes : they give sets of instructions for the synthesis of products.
5. Ribosomes : they are involved in the build up of proteins.
6. Endoplasmic Reticulum : this is where the ribosomes perform their tasks.
7. Cytoskeleton : they help to maintain and support the shape of the cells.
8. Vesicles : they ensure proteins are properly transported to the right and exact location.
9. Golgi apparatus : it prepares the protein for export by chemically tagging them.
10. Cell membrane : is the wall of the cell and typically controls what leaves and enters the cell.
Hence, cells are made of many parts, or organelles, that help the cell do its job. Each cell organelle has a specific function, or role.