answer:
reducing energy use limits the number of carbon emissions in the environmentconserving energy produces a higher quality of life. Reduced emissions result in cleaner air qualityit helps create a healthier planet, or at least helps sustain the resources we already haveexplanation:
credits: online researchthe wave pictured represents a sound wave. which label along the wave repeesents a sound with the Lowest energy
Which of the following describe the medium of a wave?
Group of answer choices
Measuring the distance between the levels of a wave at rest and its crest.
Measuring the distance between the crests of two waves
Water is the material an ocean wave moves through
Energy is what forms all waves
Answer: Water is the material an ocean wave moves through.
Explanation: An ocean wave and a sound wave are very similar because the water acts as the medium. The waves travel through the water just like a sound wave would travel through the medium.
How many atoms are in magnesium acetate!? Please I cant answer its and feel free to add me
Answer:
Hey this is your answer 59.05.
Explanation:
C) $18.06 \times {10^{23}}$ D) $24.08 \times {10^{23}}$ Hint: In order to find the number of atoms in 48 g of Mg, use the formula which relates the number of particles/atoms with the Avogadro number and number of moles of the substance and this required formula is: number of atoms = number of moles × Avogadro's number.
Please can I have brainliest :]
If you had 3.6 moles of AI(NO3)3, how many grams would you expect to have?
766.7856 g
Molecular weight of Aluminium Nitrate is 212.996 g/mol. 3.6 moles of Aluminium Nitrate is: 212.996 × 3.6 = 766.7856
A chlorine concentrations of 0.500 ppm is desired for water purification. What mass of chlorine must be added to 2500 L of water to achieve this level?
Answer:
50g
Explanation:
pls mark me brainliest right
Which of the following is a part of the kinetic-molecular theory?
(PLEASE HELP)
Your answer:
Most of the volume of a gas is occupied by gas particles.
The particles of a gas are in constant, random motion.
The average kinetic energy of a gas is dependent upon the identity of the gas.
Gases have indefinite shape and indefinite volume.
Attractive forces between gas molecules must be accounted for with a gas law calculation.
Answer:
2)The particles in a liquid are moving past one another constantly.
3)The particles in gas move freely in all directions.
4)The particles in a solid vibrate in a fixed position.
6)The particles in a gas have few attractions between them.
7)The particles in all states of matter are always moving.
Explanation:
For each of the following balanced equations, calculate how many grams of each product would be produced by complete reaction of 15.0 g of the reactant
indicated in boldface. (*)
a. *2BC13(s)* + 3H2(g) -> 2B(s) + 6HCl(g)
b. *2Cu S(s)* + 302(g) → 2Cu2O(s) + 2SO2(g)
C. 2Cu2O(s) + *Cu2S(s)* -> 6Cu(s) + SO2(g)
d. CaCO3(s) + *SiO2(s)* → CaSiO3(s) + CO2(g)
Answer:
vov-nhmb-snm
come here for study boy were not allowed girl are allowed i am also girl so come for study here we only study goo.gle meet
Karen has 21 green blocks. The ratio of green blocks to the yellow blocks she owns is 3:1. How many blocks does she own?
Answer:
28 blocks
Explanation:
Amount: 21 + y
Ratio: 3:1
Total Ratio: 4
1 = yellow blocks
say if 3 is to 1 then 21 is to how many?
21 ÷ 3
= y = 7
= 21 + 7
= 28 blocks
( or you can use the practical method using your fingers )
CAN SOMEONE PLEASE HELP ME?!
Answer:
no
Explanation:
because
What is the element that lies in group no 29?
Which two phrases describe a mineral?
A. Has a crystalline structure
B. Can be made in a laboratory
C. Made of nonliving material
D. Often found in the liquid phase
This is hard, isn't it? please help me though. PLEASE
1. Write the word equation for the reaction occurring between lead nitrate and sodium chloride. 2. From your answer in 1 write a balance chemical equation showing all state symbols. 3. Then write the ionic equation for the react ion occurring.
Explanation:
Word Equation
Lead Nitrate + Sodium Chloride --> Lead Chloride + Sodium Nitrate
Balanced Chemical Equation
2 NaCl (aq) + Pb(NO3)2 (aq) → PbCl2 (s) + 2 NaNO3 (aq)
Ionic Equation
In an ionic equation, the aqueous species in the reaction are broken up into ions.
2Na⁺ + 2Cl⁻ + Pb²⁺ + 2NO₃⁻ → PbCl2 (s) + 2Na⁺ + 2NO₃⁻
calculate the number of moles of al2o3 that are produced when 3.60 mol fe is produced in the following equation. 2Al+3FeO—> 3Fe+Al2O3
Answer:
5. a
Explanation:
Al+3FeO—> 3Fe+ Al2O3
3.60—>3.60÷3=1.20 (mol)
A container of hydrogen peroxide originally has a mass of 28.96 grams and then completely decomposes into water and oxygen gas. The mass of water produced is 15.33 g. What mass of oxygen gas was also produced?
Answer:
dhshrvehduvhdhehejieeiie
In the graphic,
X represents which element?
31
x
15
Answer:
B. X represents phosphorus
Explanation:
In an isotope symbol, you write the mass number above the atomic number. So the 31 represents the mass of the protons and neutrons of the element added together, and the 15 represents the atomic number or the total number of protons in the nucleus.
Look at the images of Mars below. choose three features from the images and explain why they provide evidence thatt there is or was water on Mars. NEED HELP ASAP. (Will mark Brainlist)
Answer:
Spot (4) Has evidence that there were waves here at some point. It looks as if the sand/surface debris was moved back and forth, creating this pattern in the sand. Spots (5) and (7) show evidence of water erosion. The smooth edges of both hills mean that water once flowed through that area, carrying little pebbles and rocks that gradually shaped and smoothed those mounds. An example for this would be how there are smooth areas in the Grand Canyon where scientists have concluded that some, if not all, of the Grand Canyon was formed by flowing water. "Rapid uplift, cracking, and surface drainage of receding floodwaters provide both the path and the necessary volume of water to quickly carve out Grand Canyon," says scholars on icr.org.
Explanation:
Water Erosion exists.
Methanol, CH3OH, is the simplest of the alcohols. It is synthesized by the reaction of hydrogen and carbon monoxide. Write chemical reactions. If 500 mol of CO and 750 mol of H2 are present, which is the limiting reactant?
Answer:
The limiting reactant is H₂
Explanation:
The reaction of hydrogen (H₂) and carbon monoxide (CO) to produce methanol (CH₃OH) is the following:
2H₂(g) + CO(g) → CH₃OH(g)
From the balanced chemical equation, we can see that 1 mol of CO reacts wIth 2 moles of H₂. So, the stoichiometric ratio is:
2 mol H₂/1 mol CO = 2.0
We have 500 mol of CO and 750 mol of H₂, so we calculate the ratio to establish a comparison:
750 mol H₂/500 mol CO = 1.5
Since 2.0 > 1.5, we have fewer moles of H₂ than are needed to completely react with 500 moles of CO. In fact, we need 1000 moles of H₂ and we have 750 moles. So, the limiting reactant is H₂.
Boiling is an __
process.
Answer:
Boiling is a process whereas evaporation is a process in respect to the speed of the process.
Thread-like structures that are found in the nucleus of a cell that contains all DNA.
A.) DNA
B.) Genes
C.) Chromosomes
D.) Nucleus
Find the mass of 1.59 mol of NH3.
Please show the work if you can!
Answer:
25.4/km=3
Explanation:
7 (Facts) 5 (things you though were interesting) 2 questions that you still have about ground water
PLS HELP ASAP
Explanation:
I just answer on a different account
What does the prefix “geo” mean?
Please Help
I will give you Brainlist
I need help I tried many times and I don’t get it
Answer: ummm what is this cause I don't get it either
Explanation:
i need help with this to lol
what would Sodium+oxygen -> sodium oxide look like in chemical formula?
4 Na + O2 → 2 Na2O
I think that's it
QUICK HURRY FIRST ANSWER GETS BRAINLIST!!!! Why is it important to add coefficients to the
reaction equation to make it balanced? (Hint: your
answer should talk about the law of conservation of mass)
I can determine the molar mass of an element by looking on the Answer under the atomic mass for the element.
Answer:
YES that is the molar mass can be found as the atomic mass of a single atom, BUT when you get to larger molecules your molar mass will be a combination of atomic masses.
Explanation:
What pattern do we see when looking at the fossil record? *
Organisms became more complex over time
Organisms became simpler over time
Organisms changed very quickly over time
Answer:
Organisms become more complex over time.
Explanation:
We all evolved from the first bacteria, which was relatively simple. We see over time that things become more adapted, slowly adding eyes, lungs, behavioral patterns, and consciousness.
A friend tells you that's after a candle burn there is less matter than before the flame was lit is your friend correct explain why or why not
Answer:
See explanation
Explanation:
The law of conservation of matter states that "matter cannot be created or destroyed. In a physical change, substances can change form, but the total mass remains the same."(Virginia)
Hence, the quantity of matter present before and after the candle burn must remain the same in accordance with this law stated above.
Hence, my friend was not correct.
pollutants from a factory that enter the water in a watershed will have a negative effect on which of the following
Answer:
a
Explanation:
The pollution will kill the local pond life, and amphibians are very delicate to change.
Mark me brainliest?
The pollutants from a factory will have a negative effect on
a. local pond life
This effect is known as water pollution.
Effects of water pollution on local pond life:The plants go through such a lot of oxygen during the evening and during rotting processes that there is none left for the other lake life. The development additionally forestalls daylight arriving at the life forms beneath. At last, all the green growth bites the dust leaving a rancid, rotting mass.
Natural matter and supplements cause an expansion in high-impact green growth and exhaust oxygen from the water section.
Thus, correct option is a.
Find more information about Water pollution here:
brainly.com/question/24623157