Answer:
thank u for the points
Explanation:
The tablet has a mass of 1.20 g and contains 700 mg of lithium carbonate.
Calculate the percentage by mass of lithium carbonate in this tablet.
Answer:
The right answer is "58.3%".
Explanation:
The given values are:
Mass of lithium carbonate,
= 700 mg
i.e.,
= 0.7 g
Mass of tablet,
= 1.20 g
Now,
The percentage of active ingredient will be:
= [tex]\frac{Mass \ of lithium \ carbonate}{Mass \ of \ tablet}\times 100[/tex]
On substituting the given values, we get
= [tex]\frac{0.7}{1.20}\times 100[/tex]
= [tex]0.583\times 100[/tex]
= [tex]58.3[/tex]%
Which subatomic particles have approximately the same mass?
protons and electrons
neutrons and electrons
protons and neutrons
electrons and atoms
Explanation:
protons and neutrons have approximately the same size, the electron is 1847th, (I think), the size of a proton
The subatomic particles which are having approximately the same mass are neutrons and protons. Thus, option c is correct.
What are subatomic particles?An atom is made of subatomic particles namely neutrons, protons and electrons. The neutrons and protons are located inside the nucleus whereas, the electrons are revolving around the nucleus through circular paths definite energy.
The electrons are having negative charges and protons are of positive charge. For a neutral atom the number of electrons and protons are equal. Electrons have negligible mass.
The mass of an atom is mainly contributed by the nucleus. The mass of neutrons and protons are have approximately same mass. Therefore, option c is correct.
To find more on atomic mass, refer here:
https://brainly.com/question/29117302
# SPJ2
NH₃ + _O₂ → _N₂ + _H₂O
Answer:
4NH3 + 3O2 → 2N2 + 6H2O
Explanation:
The relative formula mass of a compound with formula XS0, is 120. Calculate the ralative
atomic mass of Y.
[Relative atomic mass: S, 32; 0, 16]
Answer:
72
Explanation:
Relative atomic mass of YSO = Relative atomic masses of Y + S + O
This implies; Y + 32 + 16 = 120
Y = 120 - 48
Y = 72
Hence, the relative atomic mass of Y = 72
can someone help me with this?
Answer:
165.27 K
Explanation:
Initial Temperature, T1 = 303K
Initial Pressure P1 = 3.3 atm
Final Pressure P2 = 1.8 atm
Final Temperature T2 = ?
Using the equation
P1 / T1 = P2 / T2
3.3 / 303 = 1.8 / T2
T2 = 1.8 * 303 / 3.3
T2 = 165.27 K
For each of the following solutions, state whether the solution is saturated, unsaturated or supersaturated in the following conditions:
A) at 30o C, 70 g of KNO3 is dissolved in 100 g of water ________________________________
B) at 20 oC 0 g of KClO3 is dissolved in 100 g water________________________________
C) at 100 oC , 30 g of NaNO3 is dissolved in 100 g of water_____________________________
D) 50 g of NH4Cl at 70o C is dissolved in 100 g water. ________________________________
Answer:
C.at 100•C.30 g of NaNO3 is dissolved in 100 g of water
A group of students collects data to determine whether compounds were ionic or covalent. They placed each compound in a small bowl and
stuck two open ends of a battery powered circuit in the compound
Answer:
The Answer is Yes, as all of these compounds are covalent since they are not conductive.
Explanation:
.
According to the concept of conduction, only ionic compound can conduct electricity that in aqueous state.
What is conduction?Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.
In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules .
When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:
1) heat conduction
2) electrical conduction
3)sound conduction
Learn more about conduction here:
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List two things in your environment that your body would need to adjust to
Answer:
Temperature & Humidity
Explanation:
If the body could not adapt to these changes, we wouldn't be able to live all over the planet; from the equator up to the polar caps.
7. How many grams are in 1288 L of CO2 ?
Answer:
56684.236000000004
Explanation:
Can someone help me plzzzz!!!!
Most plates, bowls, and cups are made from a synthetic material called ceramic, which is also called china. It’s usually painted and can break if dropped. Consider a cup made of ceramic. What are the pros of using ceramic?
Answer:
Look below.
Explanation:
Ceramic is stronger than glass. Knowing this and the properties of a glass plate, bowl, or cup we can conclude the pros of using ceramic. Ceramic products will last longer or stay in better condition. Ceramic products are solid which means high hardness or efficient when heated up because it wont melt (high melting points).
Answer:
Ceramic is stronger than glass. Knowing this and the properties of a glass plate, bowl, or cup.
Explanation:
Hope this helps! The first answer has more info.
Does the Sun or the Moon have a greater influence on the high and
low tides of Earth's bceans? Why?
Explanation: Because ocean tides are the effect of ocean water responding to a gravitational gradient, the moon plays a larger role in creating tides than does the sun. But the sun's gravitational gradient across the earth is significant and it does contribute to tides as well.
Grams to Grams
1N2 + 3H2 -->2NH3
If you produced 34.06g of NH3 assuming excess N2 how many grams of H2 was used?
Answer:
grams H₂(g) = 6.11 grams H₂(g) used
Explanation:
Convert all given values to moles (if not already in moles), solve by rxn ratios and then convert moles to needed dimensions.
N₂(g) + 3H₂(g) => 2NH₃(g)
excess ? 34.6g/17g/mole = 2.04 moles
moles of H₂(g) needed = 3/2(2.04)moles = 3.05 moles H₂(g)
grams H₂(g) = 3.05 moles x 2 grams/mole = 6.11 grams H₂(g)
Which of the following does not describe natural migration?
Pls I really need help
Answer:
I think its learned behavior
Explanation:
because animals don't learn how to migrate, they just know already.
ammonia is poisonous or not
Answer:
it is actually corrosive
Explanation:
meaning it can cause burning of eyes, nose, throat and respiratory tract and can result in blindness, lung damage or even worst death
When K2Cr2O7 is cooled from 80oC to 20oC, how much solute will precipitate out of the solution?
Answer:
The amswer to the question is A
What is the change in temperature of 150.0 g of chloroform if it absorbs 1000.0 joules of heat, and the specific heat of chloroform is 0.96 J/g0C?
Answer:
ΔT ≈ 7°C (1 sig-fig)
Explanation:
Q = mcΔT => ΔT = Q/mc = 1000J/150g·0.96j·g·°C = 6.94°C ≈ 7°C (1 sig-fig)
Write dissociation equations to describe what would occur when each of the following ionic compounds dissolve in water.
a. NaBr
b. K2SO4
c. Pb(C2H3O2)2
d. NH4NO3
e. LiI
f. HCl
If one molecule of glucose (C6H12O6) reacts completely with three molecules of oxygen (O2) what is the TOTAL number of atoms that will be in the products
Answer:
30 atoms.
Explanation:
Based on law of conservation of proportion the atoms we have in reactants = atoms we have in products.
One molecule of glucose contains 6atoms of C, 12 atoms of H and 6 atoms of O, that is:
6+12+6 = 24 atoms
And 3 molecules of Oxygen are 6 atoms. The total atoms in reactants are:
24+6 = 30 atoms = atoms in products
Answer: It's 30 atoms.
Explanation: Just did it on USA Test Prep. lol
PLEASE HELP WILL GIVE BRAINLIEST
why does the tenpature change?
what are examples of natural production (not humans)?
what is the atomosephere?
PLEASE WRITE ONE PARAGRAPH FOR EACH QUESTIOIN
Answer:
why does the temperature change?
Daily air temperatures at Earth's surface are controlled by the incoming and outgoing energy. During the day, the air temperature increases as energy gains exceed the energy lost from Earth's surface. Throughout the night, the air temperature decreases as Earth's surface loses more energy than it receives.
What are examples of natural products?
Classes. The broadest definition of natural product is anything that is produced by life, and includes the likes of biotic materials (e.g. wood, silk), bio-based materials (e.g. bioplastics, cornstarch), bodily fluids (e.g. milk, plant exudates), and other natural materials (e.g. soil, coal).
What is the atmosphere?
The atmosphere is the blanket of gases which surrounds Earth. It is held near the surface of the planet by Earth's gravitational attraction.
Explanation:
I hope this helps!!
The change in mass during a nuclear reaction is given
by which equation?
Select one:
A
B
C
D
Answer:c
Explanation:
c
- Your science class is going to play a game of tug-of-war and you need to divide up the
teams. There are 11 people participating. If you want equal teams, how would you
decide who is on which side and why? Use what you have learned about Newton's
Laws of motions to explain.
Answer:
I will measure by weight and make sure the weight of each pupils on both teams are the same
gallium (III) carbonate formula
Different solutions of salt X are made up. What volume of: a) a 4 mol/dm³ solution contains 2 moles of X? b) a 6 mol/dm³ solution contains 0.03 moles of X?
Answer:
a. 0.5dm³
b. 5x10⁻³dm³
Explanation:
a. A solution that is 4mol/dm³ contains 4 moles in 1dm³. The volume that contains 2 moles is:
2 moles * (1dm³ / 4mol) =
0.5dm³b. And for the 6 mol/dm³ containing 0.03moles:
0.03 moles * (1dm³ / 6mol) =
5x10⁻³dm³HELP FAST!!!
Compared with intelligence sailors, space operations specialists are which of the following?
more involved in tracking targets
more involved in aligning communications systems
more involved in disseminating intelligence results
more involved in analyzing classified material
Answer:
the fourth one I think....m
Explanation:
tfffffdd
The answer is:
more involved in aligning communications systemsExplanation:
A space operations specialist tracks, monitors, and operates spacecraft and satellites. The specialist aligns ground, spacecraft, and satellite communications systems to provide accurate data. (I took the course, I know.)
What is the mass of H2O
Answer: 18.01528 g/mol
Explanation:
The atomic mass of hydrogen is 1.00794 g/mol.The atomic mass of water is 15.9994 g/mol.So, the mass of water is 2(1.00794)+15.9994 = 18.01528 g/mol
1 point
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Which of the terrestrial planets has the densest atmosphere?
Earth
Mars
Mercury
Venus
Venus. It's got the thickest and densest atmosphere of the terrestrial planets.
Answer:
venus
Explanation:
took the test
A chemist found a 60.00 gram sample containing copper and oxygen. Given the following percent composition, what is the mass of copper in the sample?
Copper- 57.08 %
Oxygen- 42.9296
choose an answer:
O 0.5708 g Cu
o 25.02 g Cu
34.25 g cu
63.5 g Cu
PLEASEEEE HELP URGENTTTT
Answer:
i don't see the question
Explanation:
19 Down syndrome is a genetic disorder caused by the
Weathering and erosion affect the most in the formation of igneous rock. A. True B. False
Answer:
true
Explanation: