Answers
Answer:
density
Explanation:
Related Questions
Someone please help will mark as brainliest
Answers
1. solute is the substance that is being dissolve,while solvent is dissolving medium
2.saturated is solution that contain maximum amount of solut that capable of being dissolve and supersaturated is solution that contain less amount or medium of solut that capable being dissolve : example vinger
3. is a number placed in front of a chemical symbol or formula. It shows how many atoms or molecules of the substance are involved in the reaction. For example, two molecules of hydrogen would be written as 2 H2, and two molecules of water would be written 2 H2O . yes it's can be change only in caseWhen you balance an equation you can only change the coefficients
⚠️HURRY PLEASE⚠️FAST IM TIMED⚠️
Which label belongs in the region marked X? Jen makes a Venn diagram to compare active transport and passive transport
a..Moves molecules
b.. Uses energy
c..Moves from low concentration to high concentration
d ..Moves from high concentration to low concentration
Answers
Answer:
A
Explanation:
exam review :)
Wax melts when it is heated. Which most likely describes what is true of the result of this reaction?
The bonding of the atoms is not the same before and after the change.
The wax has the same density before and after the change.
The same amount of wax exists before and after the change.
The wax cannot be changed back into a solid.
quickly help!!!
Answers
Answer:
The same amount of wax exists before and after the change.
Explanation:
Answer:
c -the same amount of wax exists before and after the change-
Explanation:
I did the quiz (edg.) :)
Some notes for you:
A physical change is a change in some of the physical properties of matter, but not in its identity.Wax melting is an energy change, and the energy change can be reversed, which means the wax cools into hard wax again. The wax didn't leave, nor did it somehow get less of it. It stays the same! :)I hope you have an amazing day, I mean it. God bless you!
john 7:37 <3
at the left.
6.
1. Work equals
A force x distance
B. force - distance
C. force + distance.
The force you apply to a machine
is the
A. input force.
B. output force.
C. efficiency.
2.
The unit of work is the
A. watt.
B. newton.
C. joule.
7.
The efficiency of all real
machines is
A. greater than 100%
B. equal to 100%
C. less than 100%
3.
Power is the amount of
A. work done per unit of time.
B. force on a certain area.
C. pressure in a volume of liquid.
8.
4.
The unit for power is the
A. joule.
B. Meter per second
C. watt.
The fixed point that a lever rotates
around is called the
A. fulcrum.
B. input force.
C. wedge.
9.
5.
A machine cannot change the
A. direction of the input force.
B. amount of work needed to do
A screwdriver is an example of a
simple machine called a
A. pulley.
B. screw
C. wheel and axle.
a task.
C. distance over which a force
is applied
10.
Your front teeth are
A. wedges.
B. levers.
C. compound machines.
Answers
Answer:
i know right answer
Explanation:
let me explain
Liquid or solid water that falls to the ground is called
Answers
19. Luke wants to create an aqueous solution that conducts electricity. Which of the following compounds should
he use?
a) KNO3
b) C12H22O11
c) C2H5OH
d) NH4OH
Answers
Answer:
I think b) C12H22O11.
Hope this answer is helpful for u.
2. Why is soil considered limited?
Answers
Answer: he natural area of productive soils is limited – it is under increasing pressure of intensification and competing uses for cropping, forestry, pasture / rangeland and urbanization, and to satisfy demands of the growing population for food and energy production and raw materials extraction
What is another name for a row on the periodic table?
Answer choices :
Group
Period
Family
Transition Metals
Answers
d) velocity ratio =_________ Iload distance
Answers
Answer:
velocity ratio is defined as the ratio of distance moved by effort and load in the same time interval
Explanation:
How much electronic waste does Orlando produce ?
Answers
Answer:
20 to 50 million
Explanation:
What type of energy is transmitted from the Sun to Earth through space?
Answers
Answer:
solar energy
Explanation:
Chromium, cobalt, and manganese are three extremely important metals. Are these metals uniformly distributed in the lithosphere? If not, what region of the Earth is the source of these metals?
Answers
Answer:
No.
Explanation:
No, these metals are not uniformly distributed in the lithosphere, they are present some special regions of earth. Chromium ore is found in many places including South Africa, India, Kazakhstan and Turkey. Cobalt ore deposits are present in the regions of Congo, Canada, Australia, Zambia and Brazil. China, Africa, Australia and Gabon are the regions on the earth where manganese metal is present in large quantity.
Sub teacher didn't explain at all :(
Answers
Answer:
tell your teacher when he/she get back report him/she
In the reaction 2AgI + Na2S → Ag2S +2NaI, calculate the number of moles of AgI needed to react with 85.0 g
Answers
Answer:
8.5gNaI × 1molNaI/78gNaI × 234.7g AgI / 1 MOL AgI × 2Mol Ag I / 1mol Na2S=51.2 g of AgI reacts with Na2 SExplanation:
conversion factor is used to make sure that all the units cancels with the other units and we only remain with the mass of Ag I which is 51.2g but since the number of moles can be calculated by dividing with the relative molecular mass therefore 51.2g/234.7gmol=0.22mol
Pls someone help ASAP
Answers
Answer:
i answed it in before
Explanation:
Which is a component of John Dalton’s atomic theory?
The ratio of atoms in a compound is fixed.
The atoms of different elements are the same.
An atom is a small particle of matter that can be broken down.
A reaction can create or destroy atoms as well as rearrange them.
Answers
Answer: lol the answer is A
Explanation:
i’m just smart like that , thought i should give y’all a clue
Answer:
The ratio of atoms in a compound is fixed.
Explanation:
its a
What are the differences and relationships between a dependent variable and an independent variable?
Answers
Explanation:
A dependent variable depends on the independent variable. The independent variable is what you usually control in a experiment.
Balance the following equations:
i. H2SO4 + ….NaHCO3 → Na2SO4 + ….H2O + ……CO2
ii. H2 + I2 → ….HI
iii. …..NaOH + H2SO4 → Na2SO4 + …..H2O
iv. ……FeSO4 → Fe2O3 + SO2 + SO3
v. C3H6O2 + …..O2 → ….CO2 + …..H2O
b) Calculate the molecular masses of the following:
i. H2SO4
ii. CH4
iii. NH3
c) 56g of iron reacts with 71g of chlorine. How many grams of iron react with 35.5g of chlorine?
Answers
(I) [tex]H_2SO_4+ 2NaHCO_3--> Na_2SO_4 + 2 H_2O + 2CO_2[/tex]
(II) [tex]H_2+I_2 --> 2HI[/tex]
(III) [tex]2NaOH+H_2SO_4--> Na_2SO_4+ 2H_2O[/tex]
(IV) [tex]2FeSO_4--> Fe_2O_3+SO_2+SO_3[/tex]
(V) [tex]2C_3H_6O_2+7O_2-->6CO_2+6H_2O[/tex]
_____________________________________Molecular Masses of the following:------------------------------------------------------------------------------------------------------------
(I) [tex]H_2SO_4[/tex]
(ANS) [tex]98 \frac{grams}{mol}[/tex]
__________________________________________________________
Solution:
Molecular mass of,
H = 1
S = 32
O = 16
Now,
There are 2 atoms of Hydrogen, 1 atoms of Sulfur and 4 atoms of Oxygen present, thus,
[tex]H_2SO_4 = (1x2)+32+(16x4)[/tex]
[tex]H_2SO_4 = 98 \frac{grams}{mol}[/tex]
_____________________________________(II) [tex]CH_4[/tex]
(ANS) [tex]16 \frac{gram}{mol}[/tex]
_________________________________________________________
Solution:
Molecular Mass,
Carbon = 12
Hydrogen = 1
Now
There are 1 atom of Oxygen and 4 atoms of Hydrogen present, thus,
[tex]CH_4 = 12 + (1x4)[/tex]
[tex]CH_4 = 16\frac{grams}{mol}[/tex]
_____________________________________(III) [tex]NH_3[/tex]
(ANS) [tex]17 \frac{grams}{mol}[/tex]
__________________________________________________________
Solution:
Molecular Mass,
Nitrogen = 14 grams
Hydrogen = 1
Now,
There are 1 atoms of Nitrogen and 3 atoms of Hydrogen present, thus,
[tex]NH_3 = 14 + (1x3)[/tex]
[tex]NH_3 = 17 \frac{grams}{mol}[/tex]
_____________________________________How many Grams of Iron(fe):[tex]Fe + Cl_2 --> FeCl_2[/tex]56 71
x 35.5
_____________________________________[tex]X = \frac{56 x 35.5}{71}[/tex]
Simplify the equation
X = 28 grams
__________________________________________________________
Answer:
28 grams of Iron(fe) will react with chlorine.
_____________________________________Best Regards,'Borz'Atoms and elements are examples of A. molecules. B. mixtures. C. compounds. D. pure substances.
Answers
Answer:
atom are very tiny partical
a metal worker uses a cutting torch that operates by reacting acetylene gas, C2H2(g), with oxygen gas, O2(g), as shown in the unbalanced equation below: C2H2(g)=O2(g)= CO2(g) = H2O(g) = heat determine the mass of 25 moles of acetylene (gram-formula mass = 26 g/mol
Answers
Answer:
650 grams
Explanation:
Given that acetylene gas reacts with oxygen to produce caobon dioxide, water and heat and the unbalnced equation is
[tex]C_2H_2(g)+O_2(g) \rightarrow CO_2(g) + H_2O(g)+ heat[/tex]
Gram-formula mass of [tex]C_2H_2= 26[/tex] g/mol
So, mass of 1 mole of acelylene is 26 grams
Therefore, mass of 25 moles of acelylene=25x26=650 grams
Hence, the mass of 25 moles of acelylene is 650 grams
The mass of 25 moles of acetylene has been 0.65 kg.
Moles are the count of a number of molecules in an entity and the mass based on the formula mass. 1 mole of a substance has [tex]\rm 6.023\;\times\;10^2^3[/tex] molecules.
The moles can be calculated as:
Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]
Given, mole of acetylene = 25 mol
molecular mass of acetylene = 26 g/mol
Mass of acetylene = moles [tex]\times[/tex] molecular weight
Mass of acetylene = 25 [tex]\times[/tex] 26
Mass of acetylene = 650 grams
1000 grams = 1 kg
650 grams = 0.65 kg.
The mass of 25 moles of acetylene has been 0.65 kg.
For more information about the mass, refer to the link:
https://brainly.com/question/18838161
Which process describes the wearing
away of rock?
A. drainage
B. erosion
C. infiltration
D. weathering
Answers
Answer:
weathering
Explanation:
hope this helps
What constitutes a solar system?
Answers
Our solar system consists of our star, the Sun, and everything bound to it by gravity — the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, dwarf planets such as Pluto, dozens of moons and millions of asteroids, comets and meteoroids.
Goodluck my friend!!
1. The ability to reflect light; shininess
ductility
O luster
o conductivity
o malleablity
Answers
Answer:
Luster
Explanation:
I can not really explain
-the metallic substance
Which will diffuse the most? The particles with the
A. Least potential energy.
B. Most potential energy.
C. Least kinetic energy.
D. Most kinetic energy.
Answers
Answer:
B. Most potential energy
Explanation:
brainest plz
why a marble would be a good representaion of the inner core
Answers
Answer:
Marble forms when a pre-existing limestone rock is heated to such extreme temperatures that the minerals grow larger and fuse together. With this in mind, a hard marble rock would be the perfect example of the inner core of Earth since its packed, and full of high heat levels.
Explanation:
In mitosis, how does a daughter cell compare with its parent cell?
A.
A daughter cell has twice as many chromosomes as its parent cell.
B.
A daughter cell has half as many chromosomes as its parent cell.
C.
A daughter cell and its parent cell are exact copies of each other.
D.
A daughter cell has no similarity to its parent cell.
Answers
Answer: im pretty sure its the last (one daughter cell has no similarity to its parent cell.)
Explanation: bc a daughter cell has 30 and the parent cell would have 46 and thats not twice or half as many and they arent the same either so the last one makes sences
How many significant figures does 0.062400 have?
Answers
EASY QUESTION!!!! 12 POINTS!!!
Neutron____Neutron
push apart
pull together
Answers
Answer:
Neutron pull together Neutron
Why do you see different stars in spring’s night sky than in fall’s night sky? Explain.
Answers
Answer:
If observed through the year, the constellations shift gradually to the west. This is caused by Earth's orbit around our Sun. In the summer, viewers are looking in a different direction in space at night than they are during the winter.
Explanation:
Answer:
there it the fact that the earthisspinningand so the starsare staying still and we are spinning
ILL MARK BRAINLIEST NEED HELP ASAP
THE OTHER TWO ANSWER CHOICES WERE
20
40
Answers
the second table goes with 40
the third table goes with .2
the fourth table goes with .6
hope this helps!!