Answer:
H2CO3 → CO2 + H2O decomposition in the presence of H2O, HCOOH, CH3COOH, H2SO4 and HO2 radical: instability of the gas-phase H2CO3 molecule in the troposphere and lower stratosphere†
Explanation:have fun
The correct statement given the data is:
The mass of the atoms in the reactant equals the mass of the atoms in the products (Option B)
What is a chemical equation ?Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.
The reactants are located on the left side while the products are located on the right side.
Reactants —> Products
The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
Considering the equation given from the question
H₂CO₃ —> H₂O + CO₂
Reactant
H = 2 atomsC = 1 atomO = 3 atomsProduct
H = 2 atomsC = 1 atomO = 3 atomsFrom the description of the reactant and product, w can see that the atoms in both reactant and product are the same. Hence the equation support the law of conservation of mass
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What do you understand by Biological nitrogen fixation? PLEASE ANSWER RN
Answer: Because it is the principal source of the nitrogen in the soil, nitrogen that plants need to grow, nitrogen fixation is one of the most important biochemical processes on Earth. Nitrogen within living organisms is eventually decomposed and converted to atmospheric nitrogen.
Answer: Nitrogen fixation is a process by which molecular nitrogen in the air is converted into ammonia or related nitrogenous compounds in soil.
Explanation:
which of these pairs of atoms are isotopes
A: scandium-46, titanium-46
B: iron-56, sodium-24
C: chlorine-35, chlorine-37
D: sodium-24, magnesium-24
Taking into account the definition of isotopes, the correct answer is option C: chlorine-35, chlorine-37
First of all, all atoms are composed of a central nucleus in which there are positively charged particles, the protons, and neutrally charged particles, the neutrons, around which other negatively charged particles that are electrons move.
That is, atoms are made up of a nucleus (made up of protons and neutrons) and a shell made up of electrons.
On the other side, isotopes are atoms whose atomic nuclei have the same number of protons but different numbers of neutrons.
The atomic number (Z) indicates the total number of protons in the nucleus of a given atom, while the atomic mass (A) is obtained by adding the number of protons and neutrons in a given nucleus.
So, in other words, each isotope of the same element has the same atomic number (Z) but each has a different mass number (A). This means that the different isotopes of the same atom differ from each other only by the number of neutrons. So if a neutron is added to an atom, it becomes an isotope of that chemical element.
So, in this case, the correct answer is option C: chlorine-35, chlorine-37, because the two chlorine atoms correspond to the same element but have different atomic masses, whose values are 35 and 37.
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Having freckles (F) is dominant over not having freckles (f). A parent with freckles is crossed with a parent without freckles. The Punnett square shows the possible genotypes of the offspring.
What is the genotype of each square?
A: FF Ff ff
B: FF Ff ff
C: FF Ff ff
D: FF Ff ff
Answer:
A: Ff
B: ff
C: Ff
D: ff
Explanation:
You basically look at the box it's asking for, let's use A as an example. On the top where the A column is there's F, so that's one of the thingys I forgot what they're called. Next look at the row of A, and there's f. Put the 2 together and you get Ff. Reminder that any uppercase ones come first.
Example of Scientific question?
Explanation:
how to understand the difference between acid and base
Identify the feature of the ocean floor covered by the green box.
A. Coral Reef
B. Abyssal Plain
C. Beach
D. Mid-Ocean Ridge
Two cars are moving with the same speed. The VELOCITY of both cars will be the same if the cars are moving in:
1. circles.
2. parallel paths.
3. straight lines.
4. the same direction.
Answer:
4. the same direction
Explanation:
they would have the same speed adn the same direction.
Velocity is speed+direction
Yikes ;-;
I’m stuck- Help-
Answer:
I'm pretty sure this is potential energy
Explanation:
Potential energy is energy held by an object when its let go its kinetic energy
What is the mass of the ethyl alcohol that exactly fills a 400.0 mL container? The density of ethyl alcohol is 0.789 g/mL.
Answer:
g = (0.789 g/mL) (200.0 mL) = 158
The mass of ethyl alcohol that exactly fills 400 ml of container is 315.6 grams.
How is mass related to density?Formula of density is given as , density =mass/volume
∴mass=density×volume
From the formula it is evident that density and mass are directly proportional while density and volume are inversely proportional.
From the given data, volume=400 ml and density =0.789 g/ml
∴by the formula,mass=density×volume
mass=0.789×400
mass=315.6 g
Mass and volume are extensive properties that depend on the amount of substance while density is an intensive property and does not depend on amount of substance.
Intensive properties are properties which are independent,wherein size of particles does not change.These properties cannot be easily computed and are not easily identifiable.
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Cells use energy to carry out various cell processes. Which of the following molecules store energy for the cell to use?
Group of answer choices
Water
ATP
DNA
Chloroplast
Answer:
ATP
Explonation: It is caused by the sugar molecules that are broken-down
(04.01 MC) 20 POINTS!!!!!!!!!!!!!!
Greg wrote the following steps in the formation of sedimentary rocks.
Step 1: Weathering of rocks forms sediments
Step 2: Sediments are heated
Step 3: Sediments are deposited
Step 4: Compaction and cementation forms rocks
Which step contains an error?
Select one:
a. Step 1
b. Step 2
c. Step 3
d. Step 4
Lemme just- ;-; E
Uh- CoRoNaViRuS
the answer is solid line
Choose all the answers that apply.
Which of the following is true about the carbon-oxygen cycle?
The atmosphere stores more carbon dioxide than the ocean.
Plants use oxygen to make food during photosynthesis.
Carbon dioxide is added to the atmosphere by burning fossil fuels.
Carbon dioxide is a waste produce of respiration.
Answer:
B. is the answer. :)
Explanation:
have a good day <3
The carbon cycle is the rotation of the carbon and its compound in the atmosphere. carbon is added to the atmosphere by burning fossils and is a waste product of respiration. Thus, options C and D are correct.
What is a carbon cycle?A carbon cycle is a biogeochemical cycle that involves the reuse of the carbon from various sources that involve the atmosphere and organisms. The cycle repeats itself again and again.
When fossil fuel is burnt carbon dioxide along with some gases are released into the atmosphere. Also, carbon dioxide is a waste product of cellular respiration. Most of the carbon is present in rocks, oceans, and the atmosphere.
Therefore, the burning of fossils releases carbon.
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Help please omg ;-; REEEEEEEE
did you know you have to answer 1000 questions to be able to message someone?
Answer: i didnt know that
Explanation:
Answer: Yes this is in fact true
Explanation:
What is the connection between the solar system and the Earth
HELPPP ME ASPAP I'LL GIVE YOU BRAINLIST (NO NONSENSE PLS)
1. Nobelium has an atomic number of 102 and an atomic mass of 259. Explain how to calculate how many neutrons are in the most common form of Nobelium. Include a mathematical expression to help explain your answer (example: 1+1 = 2)
2. The atomic mass of Mercury is 200.592. The atomic number for Mercury is 80. As protons and neutrons are only available as a whole, how do scientists determine an atomic mass reported as a decimal number? Explain your answer using Mercury as an example.
Answer:
1) 157 Neutrons, 2) the decimal is simply is due to isotopes, because the elements atomic mass is an average of these isotopes multiplied by its abundance(or percentage on earth.) For Mercury, it has many isotopes(an element with a different mass number, logically the atomic mass listed on the periodic table as a mass has 100% abundance, therefore this is used to find the most abundant mass for that particular element/molar mass) likewise, Mercury has an atomic mass of 200.59 u, as one mol of Hg(mercury) is 200.59 grams.
Explanation:
The formula for Neutrons in an atom of an element is calculated by finding the
Please answer all of the questions , also please dont answer if your not going to seriously answer my questions.
Answer:
oh that's really hard
Explanation:
but I'll try my best
Based on your knowledge of how the greenhouse effect works, why does the level of carbon dioxide affect the global temperature?
This is for science, I need it in my own words.
I will give brainless.
Answer:
bruh
Explanation:
300 g of requires 30000 J of thermal energy to raise the temperature from 25 °C to 85 °C, what is the heat capacity of water? ANSWER ASAP PLEASE
According to the concept of specific heat capacity, the heat capacity of water is 1666.67 J/Kg°C.
What is specific heat capacity?Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.
It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.
It is given by the formula ,
Q=mcΔT
Substitution of values in the above equation, c=30000/0.3×(85-25)
c=1666.67 J/kg°C
Thus, the heat capacity of water is 1666.67 J/Kg°C.
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The imagine shows the atomic arrangements of four different substances.
Which are compounds and why?
Is a comet between Mars and Jupiter?
What is a comet?
What is a asteroid? Not an asteroid belt
:D...........
.............
Answer:
Yes, there are comets between Mars and Jupiter.
Comets are cosmic snowballs of frozen gases, rock and dust that orbit the Sun.
Asteroids are small, rocky objects that orbit the Sun.
An element has a mass of 39.2 and an atomic number of 19. How many protons does this element have? How many neutrons? How many electrons?
Answer:
19 protons, 19 electrons, and 3 neutrons
Explanation:
the atomic number is 19 so the protons are the same, 19, and the electrons are the same as the proton, because protons are positive and electrons are negative so they have to balance out and the neutrons ➗ mass number by the atomic number.
What is the temperature range on the moon?
Answer: Daytime temperatures near the lunar equator reach a boiling 250 degrees Fahrenheit (120° C, 400 K), while nighttime temperatures get to a chilly -208 degrees Fahrenheit (-130° C, 140 K).
Helium is a "special" element in Group 18 because it does not have 8 valence electrons. Why doesn't helium have 8 valence electrons like all the other elements in group 18?
C IS THE ANSWER BECAUSE HELIUM HAS JUST 2 ATOMS
Helium is an element which belongs to a family called noble gas.
Among the noble gas element, helium is the only member with two (2) electrons.
Helium is a s-block element. S-block can only accommodate a maximum of 2 electrons. The two (2) electrons that helium has complete its outermost shell as seen from its electronic configuration below:
He (2) => 1s²Since the outermost shell of helium is completely filled, it is thus included in the noble gas family (i.e group 18).
Other members of the this group include: Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn)
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Hammer orchids are plants with flowers that are highly modified to resemble a female thynnid wasp (i.e., a wasp of the Thynnidae family) and can only be pollinated by thynnid wasps. Female thynnid wasps cannot fly, but males can. When the female is prepared to mate, she will climb up a tall plant or a blade of grass and wait for a male to appear. Males will pick up the female from her perch and mate with her in flight.
Given this information, in three to five sentences, describe these details:
one other feature of the hammer orchid that could attract its pollinator
how the orchid’s flower adaptation could lead to pollination
why you believe a plant would have more reproductive success with either a specialized pollinator or multiple pollinators
i need help!! y'all wht should i put?
Answer:
in side
Explanation:
Explain why plants need sunlight?
A.) Plants need sunlight to create food such as sugars and starches.
B.) Sunlight is used to allow plants perform photosynthesis at night.
C.) Sunlight is used to help release waste produce such as oxygen in plants.
D.) Plants need sunlight to help capture carbon dioxide to create sugars and starches.
Answer:
D
Explanation:
They make their own food by combining a gas called carbon dioxide, which they get from the air, with water from the soil. ... To power the process, the plant uses the energy of sunlight. A green pigment in the leaves called chlorophyll traps the Sun's energy
Can someone please help me with this question? Thanks in advance.
Answer:
1. Fe + H2SO4 = FeSO4 + H2
iron + sulfuric acid = duretter + hydrogen
2. Mg + 2 HNO3 = Mg(NO3)2 + H2
Magnesium + nitric acid = magnesium nitrate +hydrogen
3. Zn + 2 HCl = ZnCl2 + H2
Zinc + hydrogen chloride= zinc chloride+ hydrogen
When citric acid reacts with baking soda, a salt, water and a gas are produced. What is the name of the gas?
a) carbon dioxide
b) oxygen
c) sodium citrate
d) water vapor
Answer:
The answer is A
Explanation:
Which definition is correct?
a physical change creates a new substance because bonds are broken or formed
a physical change can happen without changing any characteristics of the substance
a chemical change occurs when the substance remains the same but the shape, or other physical characteristics change
a chemical change produces a new substance by breaking and forming new bonds
Answer:
last one is correct
Explanation:
bcoz when a reaction takes place there is the formation of new products with the help of old one .
An atom's nucleus contains three protons and three neutrons. What is the overall charge of the nucleus?
O A. O
O B. -3
O C. +3
O D. +6
The statement, that describes the overall charge of the nucleus is "+3."
What is nucleus?The atom is made up of a small nucleus surrounded by electrons that move. The nucleus is a positively charged area in the centre of the atom that is made up of closely packed protons and neutrons.
The nucleus includes protons, which have a positive charge equal to the negative charge of an electron. Neutrons, which have nearly the same mass but no charge as protons, may also be found in the nucleus.
The nucleus is made up of three neutrons and three protons. Neutrons have no charge. The charge on the nucleus results from the charge on its protons. As a result, the total charge of the nucleus is +3.
Hence the correct answer is C.
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