Answer:
Atomic number
Explanation:
Because atomic number is unique for each element and never changes
To make a balanced equation, 6 H2O + 6 CO2 ---> C6H12O6 + _
Answer:
6O₂
General Formulas and Concepts:
Chemistry/Biology
Photosynthesis Equation: 6H₂O + 6CO₂ → C₆H₁₂O₆ + 6O₂Explanation:
Most of the equation comes from the Photosynthesis Equation. Plants take in water and carbon dioxide and sunlight (energy) to produce glucose and oxygen. When we balance the equation and predict reaction. we should get 6O₂ as our answer.
How many protons would an astatine atom have after emitting
an
alpha particles?
Answer:
Astatine is of interest as a cancer therapy because it is one of several elements that emit an α particle—a combination of two protons and two neutrons—when it decays.
Explanation:
7. Rank these parts of the electromagnetic spectrum from lowest energy (1) to
highest (7):
Gamma
Infrared
Microwave
Radio
Visible
Ultraviolet
X-ray
Answer:
Gamma, Infrared,microwave,Radio, visible, ultraviolet,X-ray
Ranking these parts of electromagnetic spectrum from lowest energy to highest energy is as follows ;
Radio Microwaves, Infrared, Visible, Ultraviolet, X-ray Gamma waves.The longer the wavelength of a section of the EM spectrum the lower the energy carried while the shorter the wavelength and more the energy the electromagnetic wave will contain.
Hence ranking the electromagnetic waves in the electromagnetic spectrum from the lowest energy to the highest energy is ; Radio, Microwaves, Infrared, Visible, Ultraviolet, X-ray, Gamma waves.
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HELP PLEASE!!! FIRST PERSON TO ANSWER GETS 90 POINTS AND MARKED BRAINLIEST!
Answer:
MgO has a highest melting point
C5Br has lowesst
Explanation:
It takes a lot of energy to overcome the strong electrostatic forces of attraction between oppositely charged ions, so ionic compounds have high melting and boiling points. ... Magnesium oxide is made from ions with two charges (Mg 2+ and O 2-) and so has a much higher melting point of 2852°C.
Explain why only protons and neutrons are used to calculate mass number
Answer:
The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess. Together, the number of protons and the number of neutrons determine an element's mass number.
Which of the diagrams below shows an atom that is not a form of hydrogen?
Answer:
I believe is the npp i kinda forgot how to do these lol
Diagram with npp type shows an atom that is not a form of hydrogen.
What is an atom?
An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.
The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.
Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.
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What net force is required to accelerate a car at a rate of 2 m/s/s if the car has
a mass of 3,000 kg?
Answer:
6000 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 3000 × 2
We have the final answer as
6000 NHope this helps you
WILL MARK BRAINLIEST!!
HELP PLEASE!! What is the UNabbreviated electron configuration for Na and Ar
Answer:
Na 1s2 2s2 2p6 3s1
Ar 1s2 2s2 2p6 3s2 3p6
Explanation:
Iron has a known density of 7.87 g/cm3. What would be the mass of a 2.5
cm3 piece of iron?
how many electrons elements are present in period 2 ?
Which type of molecule forms structures in cells and stores energy? I NEED HELP
Answer:
Lipid forms structures in cells and stores energy
Explanation:
Good science depends on interactions ........
Question 3 options:
within the the government
within the a group of scientists who all agree
within the scientific community.
within those in 'authority' in the Science world.
On hot days, you may have noticed that potato chip bags seem to “inflate”, even though they have not been opened. If I have a 250 mL bag at a temperature of 19 0C, and I leave it in my car which has a temperature of 600 C, what will the new volume of the bag be? will give brainliest
The new volume of the bag : 747.43 ml
Further explanationCharles's Law
When the gas pressure is kept constant, the gas volume is proportional to the temperature
[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]
V₁=250 ml
T₁=19+273=292 K
T₂=600+273=873 K
[tex]\tt V_2=\dfrac{V_1.T_2}{T_1}\\\\V_2=\dfrac{250\times 873}{292}\\\\V_2=747.43~ml[/tex]
Which statements are true about stars smaller than the sun? They have longer lifespans. They consume their hydrogen fuel slowly. They use helium, not hydrogen, as fuel. They are more luminous than the sun.
Answer:
The answer is "They have longer lifespans" and "They consume their hydrogen fuel slowly"
Explanation:
A star is a galactic item comprising of luminous spheroid of plasma held together by its own gravity. The closest star to Earth is the Sun. Numerous different stars are obvious to the unaided eye from Earth during the night, showing up as a large number of fixed radiant focuses in the sky because of their gigantic separation from Earth.
For the vast majority of its dynamic life, a star sparkles because of atomic combination of hydrogen into helium in its center, delivering energy that navigates the star's inside and afterward transmits into space. Practically all normally happening components heavier than helium are made by heavenly nucleo-synthesis during the star's lifetime, and for certain stars by supernova nucleo-synthesis when it detonates. Close to the furthest limit of its life, a star can likewise contain degenerate issue
A star's life starts with the gravitational breakdown of a vaporous cloud of material made essentially out of hydrogen, alongside helium and follow measures of heavier components. At the point when the heavenly center is adequately thick, hydrogen turns out to be consistently changed over into helium through nuclear fusion, producing energy all the while.
What is the chemical name of the compound Cu(NO3)2? Use the list of polyatomic ions and the periodic table to help you answer.
A.
copper nitrate
B.
copper nitride
C.
copper(II) nitrate
D.
copper(IV) nitrate
E.
copper(IV) nitrite
Answer:
Cooper (||) nitrate
Explanation:
I got it right in edmentum
The chemical name of the compound Cu ( NO₃ ) ₂ copper ( II ) nitrate. Therefore, option C is correct.
What is copper nitrate ?Any member of the family of inorganic compounds with the formula Cu ( NO₃ ) ₂ x is referred to as copper(II) nitrate. Blue solids make up the hydrates. At 150–200 °C, anhydrous copper nitrate sublimes into blue–green crystals. Hemipentahydrate and trihydrate are typical hydrates.
A bluish-green, tasteless, crystalline substance that resembles sand is cupric nitrate. It is employed in pyrotechnics, electronics, electroplating, textile dyeing, medicines, electroplating, insecticides, and light-sensitive materials.
Some pyrotechnics contain copper nitrates. Chemical voltaic cell reactions are frequently demonstrated using it in educational laboratories. It is an ingredient in various metal patinas and ceramic glazes.
Thus, option C is correct.
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I need help on these 3 questions really fast
i’ll give brainliest!!!! QUICK
Answer:
10. The wavelength of the color red is 650 × 10⁻⁹ m
11. The frequency of the color red is approximately 4.6122 × 10¹⁴ Hertz
12. The corresponding energy is approximately 3.058 × 10⁻¹⁹ J
Explanation:
10. Given that the wavelength, λ, of the color red is 650 nm, and one nanometer, nm = 10⁻⁹ m, we have;
The wavelength of the color red = 650 × 10⁻⁹ m
11. The frequency, v, of the color red is obtained from the relation, v = c/λ
Where;
c = The speed of light = 299,792,458 m/s
∴ v = 299,792,458/(650 × 10⁻⁹) ≈ 4.6122 × 10¹⁴ Hertz
12. Given that energy emitted by light, E = h × v, where E = 6.63 × 10⁻³⁴ J/s, we have;
E = 6.63 × 10⁻³⁴ J·s × 4.6122 × 10¹⁴ Hz ≈ 3.058 × 10⁻¹⁹ J
Therefore, the corresponding energy, E ≈ 3.058 × 10⁻¹⁹ J.
What's the final overall charge for sodium and fluoride ?
Answer:
Sodium fluoride is conceived to be composed of equal numbers of
Na+ and F− ions that are electrostatically bonded together in an extended, non-molecular array. And therefore sodium fluoride is neutral.
Explanation:
what do the subscripts mean in a molecular formula ?
Answer:
A molecular formula tells us what atoms and how many of each type of atom are present in a molecule.
Explanation:
If only one atom of a specific type is present, no subscript is used.
For atoms that have two or more present, a subscript is written after the symbol for that atom.
Molecular formulas do not indicate how the atoms are arranged in the molecule.
- Hope this helps! -blazetoxic123
In a molecular formula, the subscripts represent the number of atoms of each element present in a molecule.
The molecular formula gives you the specific combination and quantity of atoms that make up a single molecule of a compound.
For example, consider the molecular formula of water, which is H₂O:
"H" represents hydrogen.
"O" represents oxygen.
The subscript "2" next to "H" indicates that there are two hydrogen atoms in one molecule of water.
The absence of a subscript next to "O" means that there is only one oxygen atom in one molecule of water.
So, the molecular formula H₂O tells us that a water molecule is composed of two hydrogen atoms and one oxygen atom bonded together.
Here are a few more examples to illustrate the importance of subscripts in molecular formulas:
Methane: CH₄ (One carbon atom and four hydrogen atoms)
Carbon dioxide: CO₂ (One carbon atom and two oxygen atoms)
Ethanol: C₂H₅OH (Two carbon atoms, six hydrogen atoms, and one oxygen atom)
The subscripts are crucial in distinguishing between different compounds with the same elements. For instance, carbon monoxide (CO) and carbon dioxide (CO₂) have different molecular structures and properties, even though they both contain carbon and oxygen. The subscripts in the molecular formula help to specify the unique arrangement of atoms within each molecule.
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Diamonds are formed when carbon is placed under extreme heat and pressure. This process
in caves
in the ocean
In the atmosphere of Earth
beneath the surface of Earth,
Answer:
beneath the surface of Earth
Explanation:
Diamonds are made up of carbon that has been placed under extreme heat and pressure conditions.
These conditions of high pressure and temperature can only be found within the subsurface. As you go deeper to the mantle, the geothermal gradient rises significantly.
Also, the overburden pressure will also be high.
These processes can also occur on other planets and some can be associated to the earth times when the earth was being formed.
The condition at which diamond forms confers some of the distinct natural properties that typifies it.
A student masses a sample of clay on a balance. She successfully creates it into the shape of an ice cream cone, a donut, and a hollow ball, massing the clay after each creation. Which clay creation will have the greatest mass?
A. Ice Cream Cone
B. Hollow Ball
C. Donut
D. The mass will be the same for all
Answer:
D
Explanation:
Because she is continuously using the same piece of clay, the mas does not change.
The amount of matter in an object is its
OA. Volum
OB. mass
Oc. density
OD. charge
What is a Conclusion?
A. What you figure out by doing an experiment
B. the group that does not take part in the Experiment
C. The data that you record during an Experiment
D. What you think is going to happen in an Experiment.
Answer:
A
Explanation:
using process of elimination, B would be, and I forget, but I think it's the controlled variable or one type of variable. C would be analysis or just data I guess. and D would be hypothesis
What is a carbohydrate?
Answer:
Burned Energy
Explanation:
Energy that burns
Answer:
Any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose. They contain hydrogen and oxygen in the same ratio as water (2:1) and typically can be broken down to release energy in the animal body.
Explanation:
Hope this helps
(didn't get this from the internet)
At tire depot, a pair of new tires sells for $216. The manager's special advertises the same tires selling at a rate of $380 for 4 tires. Which is the better deal? How do you know?
On a hot summer day, you make a glass of refreshing sweet iced tea by combining boiling water, tea, sugar, and ice.
What type of change occurs and how do you know?
A
Physical change; sugar dissolves in the tea and water, but the chemical composition remains the same.
B
Physical change; sugar dissolves in the tea and water which breaks the bonds of the molecules.
C
Chemical change; sugar dissolves in the tea and water due to heat being added to the water.
D
Chemical change; sugar dissolves in the tea and water which breaks the bonds of the molecules.
Gina made a poster for plastic recycling week and included this information on her poster:
A 2-column table with 3 rows. The first column labeled natural has entries cellulose, rubber tires, D N A. The second column labeled synthetic has entries plastic, starch, nylon.
What corrections should Gina make? Check all that apply.
Gina should put “cellulose” under “Synthetic.”
Gina should put “plastic” under “Natural.”
Gina should put “rubber tires” under “Synthetic.”
Gina should put “starch” under “Natural.”
Answer:
Gina Should Put Rubber Tires Under The Synthetic Category
Gina Should Put Starch Under The Natural Category
Explanation:
Edge 2020
Answer:
Gina Should Put Rubber Tires Under The Synthetic Category...(C)
Gina Should Put Starch Under The Natural Category...(D)
Explanation:
hope this helps. the person above me is also correct
reduces frictions creation of thermal energy
A: lubricant
B: electric heater
C: cell phone
Please help due today
HELP ME PLEASE !!! I.D.K WHAT TO DO :((( Will mark brainliest please !!
Answer:
bri me jose my new account
Explanation:
There was a large population of woodpeckers living in a forest. Some of the woodpeckers had long beaks, some of the woodpeckers had short beaks. During a very rainy year, the bark on most of the trees grew very thick. Only the woodpeckers with the longest, strongest beaks could drill deep enough into the thick bark to find the insects they depend upon for food. Woodpeckers with short beaks could not drill in deep enough to reach the insects. If the rainy weather continues for several years, what do you expect would happen to the woodpecker population because of natural selection?
Answer:
The woodpecker population would start to decrease because of natural selection
Explanation: