Answers
Answer:
4
Explanation:
Nitrogen (N)
hydrogen (H)
sulfur (S)
oxygen (O)
Related Questions
How does salinity vary with freezing and melting?
Question 3 options:
Freezing increases salinity, while melting decreases salinity.
Both freezing and melting decrease salinity.
Freezing decreases salinity, while melting increases salinity.
Both freezing and melting increase salinity.
Answers
Answer:
For every 5 psu increase in salinity, the freezing point decreases by 0.28 degrees Celsius (0.5 degrees Fahrenheit); thus, in polar regions with an ocean salinity of about 32 psu, the water begins to freeze at -1.8 degrees Celsius (28.8 degrees Fahrenheit).
Explanation:
Freezing increases salinity, while melting decreases salinity.
took the test lol
A sample of gas at 2.00 atm has a temperature of 60. °C. What will its temperature be at 6.50 atm
Answers
Answer:
https://quizlet.com/259730102/chemistry-unit-10-flash-cards/
Explanation:
what does aqueous mean
Answers
of or containing water, typically as a solvent or medium.
"an aqueous solution of potassium permanganate"
like water; watery.
"a great hall of aqueous marble"
Which of the following operations usually makes a substance dissolve faster
in a solvent (select ALL that apply)?
A.raising the temperature
B.lowering the temperature
C.agitation
D.crushing the substance to a powder
Answers
Reason: because the temp drops fast
Answer:
I think it is agitation
Explanation:
What is the mass, in grams, of MgCl2 is consumed when 255g Mg(OH)2 is produced?
MgCl2 + 2 LiOH → Mg(OH)2 + 2 LiCl
Answers
416 g MgCl₂
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[RxN - Balanced] MgCl₂ + 2LiOH → Mg(OH)₂ + 2LiCl
[Given] 255 g Mg(OH)₂
[Solve] x g MgCl₂
Step 2: Identify Conversions
[RxN] 1 mol MgCl₂ → 1 mol Mg(OH)₂
[PT] Molar Mass of Mg - 24.31 g/mol
[PT] Molar Mass of O - 16.00 g/mol
[PT] Molar Mass of H - 1.01 g/mol
[PT] Molar Mass of Cl - 35.45 g/mol
Molar Mass of Mg(OH)₂- 24.31 + 2(16.00) + 2(1.01) = 58.33 g/mol
Molar Mass of MgCl₂ - 24.31 + 2(35.45) = 95.21 g/mol
Step 3: Stoichiometry
Set up conversion: [tex]\displaystyle 255 \ g \ Mg(OH)_2(\frac{1 \ mol \ Mg(OH)_2}{58.33 \ g \ Mg(OH)_2})(\frac{1 \ mol \ MgCl_2}{1 \ mol \ Mg(OH)_2})(\frac{95.21 \ g \ MgCl_2}{1 \ mol \ MgCl_2})[/tex]Multiply/Divide: [tex]\displaystyle 416.227 \ g \ MgCl_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
416.227 g MgCl₂ ≈ 416 g MgCl₂
Which of the following is a problem caused by acid rain?
1 -is a factor in global warming
2-causes depletion of the ozone layer
3-respiratory problems in humans
4-makes lakes and streams unsuitable aquatic life
Answers
Answer:
1
Explanation:
is a factor in global warming
Answer:
sulfur dioxide from coal fired plants in Tennessee
Explanation:
Got it right on the quiz :)
A process that releases heat, such as freezing or condensation is called?
Answers
Answer:
exothermic
Explanation:
An exothermic reaction gives off heat energy. Condensation is the process by which water vapor turns into liquid water. This typically occurs when water vapor molecules come into contact with cooler molecules. This causes the water vapor molecules to lose some energy as heat which is a exothermic reaction.
When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction.
Find the mass of 1.25 moles Ca(OH)2.
Answers
92.5
Explanation
1.25 x 74= 92.5g
According to the mole concept, the mass of 1.25 moles Ca(OH)₂ is 92.61 grams.
What is a mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons. Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.Mass=number of moles×molar mass=1.25×74.09=92.61 g.
Thus,the mass of 1.25 moles Ca(OH)₂ is 92.61 grams.
Learn more about moles,here:
https://brainly.com/question/26416088
#SPJ2
Distance=100 meters
Time=33.2 seconds
Speed=
pls help
Answers
Answer:
3.01
Explanation:
Speed=distance/time
=100mtrs/33.2sec
=3.01m/s
Question 7 (5 points)
(05.01 LC)
One mole of zinc has a mass of 65.4 grams. Approximately how many atoms of zinc are present in one mole of zinc?
Answers
Answer:
6.02 x 10²³ atoms
Explanation:
The number of moles present in 1 mole of zinc will be 6.02 x 10²³ atoms. This is because a mole of any substance contains the Avogadro's number of particles which is 6.02 x 10²³ atoms.
A mole is simple a convenient way of estimating the number particles within a substance.
So every 1 mole of a substance contains the same number atom in there.
For the give zinc, since it is 1 mole, it will contain 6.02 x 10²³ atoms
they've changed the answer, but 6.02 x 1023 is still right. the new answer is just 6 x 1023.(6.02 rounded to the nearest integer)
9 of 16
9.
A student drops a ball from 5 feet above the ground. After bouncing once, it only reaches
a maximum height of 4 feet above the ground.
Use energy terms to explain why the ball did not reach its original height after bouncing
once.
A. Some energy was lost
B. Some energy was transferred to the floor and air
C. Some energy disappeared when it hit the floor
D. Some energy was destroyed
Answers
The energy would have been lost to the atmosphere as sound energy or heat energy as the ball hit the floor.
write your idea on the saying."we are what we eat"
Answers
Explanation:
A way to maintain good health is from exercise, eating healthy foods, getting enough rest, keeping .The first mention of the phrase 'you are what you eat' came from the 1826 work Physiologie du Gout, ou Medetations de Gastronomie Transcendante, in which French author Anthelme Brillat-Savarin wrote: “Tell me what you eat and I will tell you what your are.”
What is the overall reaction equation
Answers
Answer:
If m or n is zero, the reaction is zero order in A or B, respectively, and the rate of the reaction is not affected by the concentration of that reactant. The overall reaction order is the sum of the orders with respect to each reactant. If m = 1 and n = 1, the overall order of the reaction is second order
(m + n = 1 + 1 = 2).
Explanation:
PLS HELP I WILL GIVE BRAINLIST.
Mercury has a density of 13.6 g/cm³. Which of these materials will float in mercury? Check all that apply.
iron, density: 7.8 g/cm³
aluminum, density: 2.7 g/cm³
silver, density: 10.5 g/cm³
gold, density: 19.3 g/cm³
uranium, density: 18.7 g/cm³
lead, density: 11.3 g/cm³
Answers
Answer:gold iron and uranium
Explanation:
Answer:
iron, density: 7.8 g/cm³
aluminum, density: 2.7 g/cm³
silver, density: 10.5 g/cm³
lead, density: 11.3 g/cm³
Explanation:
other ones wrong
According to kelper, which planet travels the fastest.
1. Earth
2. Jupiter
3. Mercury
4. Neptune
Answers
O energy flowing from the
krill to the blue whale
What is the form of energy that the blue whale consumes when it eats the point
krill that helps it survive?
thermal
radiant
Chemical
Answers
Answer:
thermal
Explanation:
This is for my wonderful boy friend Putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
Never put my love out on the line
Never said "Yes" to the right guy
Never had trouble getting what I want
But when it comes to you, I'm never good enough
When I don't care, I can play 'em like a Ken doll
Won't wash my hair, then make 'em bounce like a basketball
But you make me wanna act like a girl
Paint my nails and wear high heels, yes, you
Make me so nervous that I just can't hold your hand
You make me glow
But I cover up, won't let it show
So I'm putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
I think I'd have a heart attack
I think I'd have a heart attack
Never break a sweat for the other guys
When you come around, I get paralyzed
And every time I try to be myself
It comes out wrong like a cry for help
It's just not fair; pain's more trouble than love is worth
I gasp for air; it feels so good, but you know it hurts
But you make me wanna act like a girl
Paint my nails and wear perfume for you
Make me so nervous that I just can't hold your hand
You make me glow
But I cover up, won't let it show
So I'm putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
I think I'd have a heart attack
I think I'd have a heart attack
The feelings got lost in my lungs
They're burning I'd rather be numb
And there's no one else to blame
So scared I take off, and I run
I'm flying too close to the sun
And I burst into fla-fla-flames
You make me glow
But I cover up, won't let it show
So I'm putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
I think I'd have a heart attack (Heart attack)
I think I'd have a heart attack
I think I'd have a heart attack
I think I'd have a heart attack
Answers
Answer:
oh thats a bomb song tho i love
Answer: Christina your killing me pls come back i screwed everything up with everyone pls
Explanation: pls
HELP ASAP pls will give brainlist
Answers
Answer:
Fe ^2+ + MnO - 4 → Fe 3+ + Mn 2+
Explanation:
Explanation:
You follow a series of steps in order:
Identify the oxidation number of every atom.
Determine the change in oxidation number for each atom that changes.
Make the total increase in oxidation number equal to the total decrease in oxidation number.
Place these numbers as coefficients in front of the formulas containing those atoms.
Balance all remaining atoms other than
O
and
H
.
Balance
O
.
Balance
H
.
Check that atoms and charges balance.
Here's how it works. Your unbalanced equation is
why the times of moonrise for full and new moon are inverted.
Thank you :)
Answers
If more solvent is added to a solution:
A.the solution becomes less dilute
B.the molarity decreases
C.the molality increases
D.the percent (v/v) increases
Answers
Answer:
The answer would be A
Explanation:
If more solvent is added, the solution becomes unsaturated because in principle it is capable of dissolving more solute.
Pls do it I don’t understand
Answers
What does the cardiovascular system do
for the human body?
Answers
Answer: The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body.
Explanation:
How many atoms are in 70.00 grams of oxygen.
Question 2 options:
2.635 x 1024 molecules O
2.635 x 1024 atoms O
6.744 x 10 23 atoms O
6.744 x 1026 atoms O
Answers
Answer:
A. is the correct choice.
Explanation:
If there are 70.00 g of Oxygen then it would be molecules, in which there is only 1 option with molecules.
I am NOT professional. There is a chance I am wrong. Please reply to me if I made a mistake.
Answer:
Explanation:How many atoms are in 70.00 grams of oxygen.
lil give brainly 20 points
Answers
Answer: i would say producer
Explanation:
Answer:
a
Explanation:
If on December 1st there is a new moon, when will the next new moon be approximately?
December 14th
December 5th
January 5th
December 29th
Answers
PLEASE HELP DUE BY FEB 4TH PLEASE HELP PICTURE IS ATTACHED
Answers
Answer:
4. is the troposphere
5. is the lithosphere
6. is the hydrosphere
7. this would be lithosphere (land), hydrosphere (water), biosphere (living things) and atmosphere (air)
8. this would be the goesphere and atmosphere.
note: hope this helps :)
The weight of a box having a mass of 100 kg is N.
Answers
Explanation:
weight= mass* 9.8N
100 kg mass weighs about 980 Newtons on Earth.
which statement describes the movement of carbon dioxide in the carbon cycle?
Answers
Explain
since in the carbon cycle CO2 goes into plants, creating sugar molecules that the animals then eat and as a result breathe out the CO2 back into the atmosphere
What is the yearly exposure from wearing a watch with a luminous dial?
Answers
Hope this helps
Can somebody help me with this math.