Answer: As we all are aware that life on Earth is existed due to several environmental changes and there are several scientific factors of sustainability that support the survival and evolution of life on Earth.
Scientific factors of sustainability include solar energy, chemical cycle, and biodiversity that supported life on Earth. solar energy helps all organism and especially producers to gain energy and store the energy which further used in chemical cycles of transferring energy to other trophic levels.
Chemical cycle also involves the interaction of biotic and abiotic envrionment with each other that leads to environmental changes as well as organisms adapt themselves accordingly.
Biodiversity maintains the balance in the ecosystem and prevent dominancy of one organism otherwise it can lead to scarcity and organism would not be able to survive. Variation in biodiversity due to random mating in the same species leads to evolution and produces new species of organisms.
Hence, scientific factors of sustainability play major role in survival and evolution of life on the Earth.
Explanation: Is this what you need
atoms or helium nickel would represent _____
Answer:
they represent their own atoms
Answer:
Elements
Explanation:
How many valence electrons does B (boron) have?
A. 13
B. 5
C. 10
D. 3
Answer:
Boron has 3 valence electrons
A sample of methane occupies a volume of 370.0 ml at 25 oC and exerts a pressure of 1020 mm Hg. If the volume is allowed to expand to 510.0 ml at temperature of 300 K, What will be the pressure?
Answer:
744.9 mmHg ≅ 745 mmHg
Explanation:
The base to solve this, is the Ideal Gases Law. The mentioned formula is:
P . V = n . R . T
To compare two situations, we can propose:
For the first situation P₁ . V₁ = n₁. R . T₁
For the second situation P₂ . V₂ = n₂ . R . T₂
As the sample has the same moles and R is a constant value, we can avoid them so: (P₁ . V₁) / T₁ = (P₂ . V₂) / T₂
We need to make Tº unit conversion:
25ºC + 273 = 298K
We replace data → (370 mL . 1020 mmHg) / 298K = (P . 510 mL) / 300 K
(377400 mL.mmHg / 298K) . 300 K = P . 510 mL
379932.8 mL . mmHg = P . 510 mL
(379932.8 mL . mmHg) / 510 mL = P → 744.9 mmHg
why does a freely suspended iron rod does not point at N-S directions always
Answer:
This is because their is a repulsive force between the magnetic north and the geographical north since the rod experiences the Earth's magnetic field.
The iron rod deflects at an angle (angle of dip) from the horizontal.
_AL +
_Br2 —>
_AlBr3
Answer 2, 3, 2
Explanation:
HELPP ASAP PLEASE SEE IMAGES
Answer:
1st paragraph:
1.compound 2.physical 3.elements 4.water 5. gas 6.white 7. season 8.ratio 9.formula 10.elements 11.atoms 12.subscript 13.one
2nd paragraph
1.stable 2.many/reactive 3.eight 4.helium 5.seven 6.outer 7.one 8.level 9. compounds 10.reactive 11. seven 12. Eight 13.lose 14.gain 15. Share 16.compounds 17. atoms
Explanation:
I just did the 1st page. Gimme a min and I'll do the second.
. Do the Lanthanoid and Actinoid families have specific group numbers?
Answer:
No they do not
Explanation:
How much water would you need to add to 500 mL of a 2.4 M KCl solution to make a 1.0 M solution?
Answer:
Use dilution equation:
M1V1 = M2V2
1.0*V1 = 2.4*500
V1 = 1200mL
You already have 500mL KCl solution . You must add: 1200mL - 500mL = 700mL water.
Explanation:
Hope this helps!!! <3
The excess reactant... a. provides more product in the reaction b. is left over, after the reaction is complete c. has the highest coefficient in every balanced reaction d. is the gas in a balanced reaction
50 POINTS HELP
Answer:
[tex]\boxed {\boxed {\sf Option: B }}[/tex]
Explanation:
The excess reactant is the reactant left over after a chemical reaction. It is found when the limiting reactant is completely done. The answer to your question is option B. The excess reactant is what is found after the reaction is complete. Our answer is Option B.
Answer:B
Explanation: Excess Reactant - The reactant in a chemical reaction that remains when a reaction stops when the limiting reactant is completely consumed consumed. The excess reactant remains because there is nothing with which it can react.
what is preferential discharge of ions
Answer:
During the process of electrolysis, ions that are formed will get discharged to reform neutral atoms at the state of electrons, whereas the preferential meaning which in case one or more kind of cations and anions in the electrolyte, the one with the higher concentration or at a lower position activity will get discharged first.
which of the following keeps satellite in orbit
Answer:
Gravity
Explanation:
Without gravity it would just float in space.
Please mark brainliest, i need two more to achieve expert
Please Help!!!!
As the mass of a star increases, how do you think its luminosity might change?
Answer: Answer in explanation
Explanation:
If you're talking about *stars* in general, as mass increases, so does the luminosity - it burns brighter and faster. A *star* will not increase it's mass generally, unless something falls into it; and generally - even if a *planet* falls into a star (take our sun, for example - you could plunge the Earth into the sun, and you've only increased the sun's mass by 1/1,300,000th... )
As radius increases, for example, when our sun slips into the Red Giant phase, it will become redder, but the surface will have increased 100,000 times - so, the amount of light it puts out now from a square meter, compared to how much it will put out when it's a red giant will be reduced 20 fold; however, there's so much ***more*** area, that the overall brightness of our sun will increase dramatically.
Answer:nut
Explanation:bust
please help me I will give brainesty if your right
Answer:
Sunlight
Explanation:
My science teacher has told us that plants need the sun to photosynthesis. And even though their is a lot of sun, they need to compete for it still.
Explain what happens to the temperature of an ice cube as it melts.
Answer:
the temperature of the ice cube makes it gets warmer
Explain the purpose and function of a gene.
Function
Genes decide almost everything about a living being. One or more genes can affect a specific trait. Genes may interact with an individual’s environment too and change what the gene makes.
Genes affect hundreds of internal and external factors, such as whether a person will get a particular color of eyes or what diseases they may develop.
Some diseases, such as sickle-cell anemia and Huntington’s disease, are inherited, and these are also affected by genes.
Purpose
The purpose of genes is to store information.
Each gene contains the information required to build specific proteins needed in an organism.
Hope this helps !!
1. What causes potential energy to change within a system?
2. How does the location of an energy generation source affect the available potential energy?
Answer:
I don't know what you mean by that I just wanted to ask you this: who do u support? Biden or Trump?
Explanation:
Thank you if you answered my question!
What does the nucleus of the atom contain?
A. protons and electrons
B. protons and neutrons
C. neutrons and electrons
Answer:
I believe the answer is B
Decipher this puzzle
SECRET
SECRET
SECRET
Answer:
Top secret
Explanation:
Top secret because it is circling the word secret on the stack of three so its the secret on the top. It's a play on words or words riddle.
Electronic configuration of first 20 elements
Explanation:
Electronic Configuration of First 30 Elements with Atomic Numbers
Atomic Number Name of the Element Electronic Configuration
18 Argon (Ar) [Ne] 3s2 3p6
19 Potassium (K) [Ar] 4s1
20 Calcium (Ca) [Ar] 4s2
21 Scandium (Sc) [Ar] 3d1 4s2
26 more rows
Explanation:
NUMBER ELEMENT ELECTRON CONFIGURATION
1 Hydrogen 1s1
2 Helium 1s2
3 Lithium [He]2s1
4 Beryllium [He]2s2
5 Boron [He]2s22p1
6 Carbon [He]2s22p2
7 Nitrogen [He]2s22p3
8 Oxygen [He]2s22p4
9 Fluorine [He]2s22p5
10 Neon [He]2s22p6
11 Sodium [Ne]3s1
12 Magnesium [Ne]3s2
13 Aluminum [Ne]3s23p1
14 Silicon [Ne]3s23p2
15 Phosphorus [Ne]3s23p3
16 Sulfur [Ne]3s23p4
17 Chlorine [Ne]3s23p5
18 Argon [Ne]3s23p6
19 Potassium [Ar]4s1
20 Calcium [Ar]4s2
What will occur when the following chemical reaction reaches dynamic equilibrium? 3H2 + N2 3 2NH3 O A. No further chemical reactions will occur in either direction. B. The concentrations of all reactants and products will be the same C. The product will form at the same rate at which it decomposes. D. The concentrations will continue to change gradually over time.
Answer:
The product will form at the same rate at which it decomposes.
Explanation:
hope it helps
Answer: The product will form at the same rate at which it decomposes.
Explanation: I took the test
Combine Lead (II) nitrate with Potassium Iodide solution
Answer:
When you add lead nitrate to potassium iodide, their particles combine and create two new compounds, a yellow solid called lead iodide (Pbl2) and a white solid called potassium nitrate (KNO3). Yellow clouds indicate that the chemical change has taken place.
Hope it will help you........
What volume (in liters) does 3.91
moles of nitrogen gas at 5.35 atm
and 323 K occupy
PLEASE HELP ASAP I LOVE YOU I'LL GIVE BRAINLY
Answer:
I think B. force create matter is right one
Answer:
the answer is c
Explanation:
A light year is a measure of
O length
O speed
O time
O volume
Answer:
length
Explanation:
It's the distance covered by light in one year.
Equations can be balanced by using the half-reaction method. Which step should be completed first when using this method?
Answer:
Separate the reaction into half equations
Explanation:
When we want to balance redox equations, we must take cognizance of the fact that a specie was oxidized and another specie was reduced.
Hence we must identify the specie that was oxidized and the one that was reduced and then break up the whole redox reaction into oxidation and reduction half equations.
Answer:
D. finding the oxidation states of atoms
Explanation:
i did the review on edge2020
What are the predominant intermolecular forces in: Kr, CBr4, NaF, CH3OH, and ruby? Then rank by increasing boiling point.
Answer:
Kr- dispersion forces
CBr4- dispersion forces
CH3OH - dispersion forces, dipole interaction, hydrogen bonding
NaF- ionic
Kr-<CBr4<CH3OH<NaF
Explanation:
The magnitude of intermolecular forces influences the boiling points of substances. The stronger the intermolecular forces the higher the boiling point.
The strongest intermolecular forces here is the Ionic bond hence it accounts for the highest boiling point followed by CH3OH having hydrogen bonding.
Though Krypton and CBr4 both have dipole interaction, the higher relative molecular mass of CBr4 makes it to have a higher boiling point than Kr
If a 12 mg metal ring is heated using 30.0 calories, it’s temperature rises 1.9 degrees Celsius. Calculate the specific heat of the ring
Answer:
c = 5505263.16 J/g.°C
Explanation:
Given data:
Mass of ring = 12 mg (12/1000 = 0.012 g)
Calories used = 30.0 cal (30.0 ×4184 = 125520 J)
Temperature increases = 1.9°C
Specific heat of ring = ?
Solution:
Specific heat capacity:
It is the amount of heat required to raise the temperature of one gram of substance by one degree.
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
125520 J = 0.012 g×c ×1.9°C
125520 J = 0.0228 g.°C ×c
c = 125520 J / 0.0228 g.°C
c = 5505263.16 J/g.°C
The weak interactions between atoms that keep atoms near each other but don't tightly bind them together are called
Answer:
Cohesive and adhesive forces.
further, we also have vander waal's forces of attraction
could someone please tell me how many subatomic particles are in the element phosphorus?
Some characteristics of each of the four states of matter are given in the table below.
States of Matter
State Space Between Particles Speed of Particles
1 High High
2 High High
3 Very Low Least
4 Low Medium
Which state of matter does State 3 represent?
Gas
Liquid
Solid
Plasma
Answer:
YOUR ANSWER IS SOLID
EXPLANATION: