Answer:
This description can be expressed as follows:
Y > W > XY>W>X
And,
W=ZW=Z
From these expressions we are able to find out that the saltiest cell description is Y, while the less salty is X.
Now, salt is well known as a dehydrating agent. In a process called osmosis cells placed in a salty liquid environment lose water, how?
Well, cells have a semipermeable membrane, in which some substances can get inside. Cells also have water inside. If a cell is placed in a quite salty liquid environment, salt will make the water inside the cells to come out, drying the cell and diminishing its size.
So, in this case, according to the expressions above, Cell Y will look the smallest, while cell X will look the biggest.
If we pour pure water in each liquid, the salt concentration will change and each cell will begin to grow bigger, but the saltiest cell will still be smaller than the others with less salt concentration.
Finally, to answer the question: Y cell will look the smallest after this processWhich statement describes how the sun gets its light?
A. It bends light.
B. It reflects light.
C. It refracts light.
D. It makes its own light.
Answer:
D
Explanation:
it's a star it has gas and makes it own light
Hydrogen bromide is a chemical compound. It’s formed from atoms of hydrogen and bromide, two
A
electrons.
B
elements.
C
neutrons.
D
nuclei.
Answer: The correct option is B. elements.
Explanation:
A chemical compound is defined as the specie which is formed by the combination of two or more elements. For example: Water, carbon dioxide, etc..
Elements is defined as the chemical specie which consists of only one type of atom. For example: Hydrogen, Oxygen, etc..
Now, when hydrogen element and bromine element combines, it leads to the formation of a heteronuclear chemical compound known as hydrogen bromide having chemical formula HBr.
Hence, the correct option is B. elements.
Hydrogen and bromine are two elements that form hydrogen bromide (HBr).
COMPOUND:
A compound is a chemical substance made up of chemical combination of two or more elements. According to this question, Hydrogen bromide is a chemical compound formed from atoms of hydrogen (H) and bromine (Br). These two atoms that make up hydrogen bromide are that of elements. Therefore, it can be said that hydrogen and bromine are two elements that form hydrogen bromide (HBr).Learn more at: https://brainly.com/question/13516179?referrer=searchResults
What is one way in which sound and light are alike? PLEASE HELP IF YOU WANT BRAINLEIST AND TO HAVE YOUR COMMENT LIKED!!
A. They both travel easily through wood.
B. They are both types of energy.
C. both can travel through outer space.
D. They both make it easier for you to see what you are doing.
Answer:
They are both types of energy.
Explanation:
The last 2 are true for light, and the first one is true for sound.
Hope this is right, sorry if it is not.
A 52 gram sample of an unknown metal requires 714 Joules of energy to heat it from
30.5◦C to 82◦C. What is the specific heat of
this metal?
Answer in units of J/g ·
◦ C.
Answer: Approximately [tex]0.267 \frac{\text{J}}{\text{g}^{\circ}\text{C}}[/tex]
===================================================
Work Shown:
We have the following variables
Q = 714 joules = heat requiredm = 52 grams = massc = specific heat = unknown[tex]\Delta t[/tex] = 82-30.5 = 51.5 = change in temperaturenote: the symbol [tex]\Delta[/tex] is the uppercase Greek letter delta. It represents the difference or change in a value.
Apply those values into the formula below. Solve for c.
[tex]Q = m*c*\Delta t\\\\714 = 52*c*51.5\\\\714 = 52*51.5*c\\\\714 = 2678*c\\\\2678*c = 714\\\\c = \frac{714}{2678}\\\\c \approx 0.26661687826737\\\\c \approx 0.267\\\\[/tex]
The specific heat of the unknown metal is roughly [tex]0.267 \frac{\text{J}}{\text{g}^{\circ}\text{C}}[/tex]
How many moles of Aluminum are produced when34.2 g of alumina are broken down through the process of electrolysis
Answer:
0.670 mol
Explanation:
Step 1: Write the balanced reaction for the decomposition of alumina
2 Al₂O₃ ⇒ 4 Al + 3 O₂
Step 2: Calculate the moles corresponding to 34.2 g of Al₂O₃
The molar mass of Al₂O₃ is 101.96 g/mol.
34.2 g × 1 mol/101.96 g = 0.335 mol
Step 3: Calculate the moles of Al produced from 0.335 moles of Al₂O₃
The molar ratio of Al₂O₃ to Al is 2:4.
0.335 mol Al₂O₃ × (4 mol Al/2 mol Al₂O₃) = 0.670 mol Al
Plsss name this compound
Explanation:
It looks like 2,2,4-trimethylpentane.
Longest alkane chain contains 5 carbons. => -pentane
3 methyl groups on the 2nd, 2nd and 4th carbons.
1.7 x 10 cm= significant figures
Answer:
its 2
Explanation:
Which symbol can be used to indicate the pressure at which a chemical reaction is carried out?
25°C
OA
2 atm
Pt
Answer:
2 atm
Explanation:
The symbol 'atm' is used for pressure. Hence, the symbol used to indicate the pressure at which a chemical reaction is carried out can be, 2 atm.
What is the molar mass of magnesium sulfate, MgSO4?
Answer:
120.37 g/mol is the molar mass of magnesium sulfate
Suppose that you take a sample of 500 g of ocean water and let the water evaporate. The mass of the remaining salts is 17 g. What was the salinity of the ocean water
Answer: The salinity of ocean water is 34 ppt.
Explanation:
Salinity is defined as the number of grams of salts present per kilogram of seawater. It is expressed in parts per thousand.
The formula used to calculate the salinity of ocean water or sea water is:
[tex]\text{ Parts per thousand}=\frac{\text{Mass of salts}}{\text{Mass of sea water}}\times 1000[/tex]
We are given:
Mass of salts = 17 g
Mass of sea water = 500 g
Putting values in above equation, we get:
[tex]\text{ Parts per thousand}=\frac{17g}{500g}\times 1000\\\\\text{ Parts per thousand}=34[/tex]
Hence, the salinity of ocean water is 34 ppt.
QUESTION 4
How many significant figures are in the number 0.000020?
O A. 1
OB.2
O C.3
OD.4
Answer:
B) 2
Explanation:
There are two significant figures in given measurement,
2, 0
Significant figures:
1= The given measurement have four significant figures 1534.
2= All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
3= Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.
4= Zero between the non zero digits are consider significant like 107 consist of three significant figures.
5= The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.
When baking soda and vinegar react, the surface bubbles. What does this most likely indicate?
a chemical change, because a precipitate is being formed
a chemical change, because a gas is being formed
a non chemical change, because a precipitate is being formed
a non-chemical change, because a gas is being formed
Answer: B
a chemical change, because a gas is being formed
Explanation:
Answer:
B
Mark Brainliest please
Explanation:
The compound cobalt(II) bromide is a strong electrolyte. Write the transformation that occurs when solid cobalt(II) bromide dissolved in water. Be sure to specify states such as (aq) or (s).
Answer and Explanation:
The chemical formula for cobalt(II) bromide is CoBr₂. As it is a strong electrolyte, it dissociates into ions when dissolved in water, according to the following chemical equation:
CoBr₂(s) → Co²⁺(aq) + 2 Br⁻(aq)
Thus, the compound CoBr₂ dissociates in water producing 1 mole of cobalt(II) ions (Co²⁺) and 2 moles of bromide ions (Br⁻) per mole of CoBr₂. The ions are dissolved in water, so they are in the aqueous state (aq).
Adding oil to a table would ___________ the friction when sliding a book across it.
Increase or decrease
Answer:
Increase
Explanation:
Hope it helps you
Answer:
Decrease
Explanation:
If the oil you're referring to is just some normal oil, it'll lessen the friction and cause it to side more smoothly
Select the correct answer.
Which of these activities increases the amount of carbon in the atmosphere?
O A.
animals eating plants
OB. burning of fossil fuels
OC. fossilization
O D.
photosynthesis
The combustion of propane (C3H8) creates water and CO2. Looking at the
reaction below, which of the following would be the mole ratio between propane
and carbon dioxide? *
C3H8 +502->4H2O + 3C02
A)3 mole CO2 / 5 mole C3H8
B)3 mole C3H8/4 mole CO2
C)3 mole CO2 / 1 mole C3H8
D)3 mole C3H8 / 1 mole CO2
Answer:
C)3 mole CO2 / 1 mole C3H8
Explanation:
(1) Phosphorus silicon is a semi-conductor
When Silicone is altered with Phosphorus, 4 of its electrons form covalent bonding and the 5th electron becomes delocalized and thus it increases electrical conduction
Answer:
blue blah blue blah
Explanation:
how are the terms atom and element different?
Answer:
Element is made from same type of atoms
While atom is present in element made up of different particles like proton neutrons electron etc
Explanation:
c5h12 compound name
The subatomic particle that is different in isotopes
Answer:
Neutrons
Explanation:
Subatomic particles are components atoms, and they include protons, electrons and neutrons. In different isotopes of an atom, the number of neutrons that the atom contains is what changes.
I hope this helps!
Ti(SO4)2 chemical compound?
Answer:
Titanium(IV) Sulfide
Explanation:
Investigate: Press Reset. Start with 2.000 moles of sulfur, then press Start. How many atoms do you think this amount represents
Answer:
1.204428 * 10^24 atoms
Explanation:
Number of moles = 2 mol
Number of atoms = ?
The relationship between moles and atoms is given by the avogadro's umber. This is the number of units in one mole of a substance. The units can be atoms, ions etc In this case it is atoms. The number is equal to 6.02214076 * 10^23
This means;
1 mol = 6.02214076 * 10^23
2 mol = x
Upon solving for x,
x = 2 * 6.02214076 * 10^23
x = 12.04428 * 10^23
x = 1.204428 * 10^24 atoms
Which correctly lists three characteristics that are used to describe air?
O Altitude, density, radiation
O Density, radiation, mass
O mass, pressure, density
O pressure, altitude, radiation
Answer:
Mass Pressure and density.
Explanation:
Which of the following is NOT a heterogenous mixture:
Salad
Beef Stew
Cereal in milk
Vinegar
Answer:Vinegar
Explanation:
How many moles of NaHCO3 are there in a 3g tablet of Alka-Selzer?
30 POINTS HELP Which idea was supported by Aristarchus, Copernicus, and Galileo?
The planets have epicycles.
The planets revolve around the Sun.
The stars rotate around the Sun.
The center of the solar system is Earth.
Answer:
SO SORRY it took so long but the answer is B :)
Explanation:
Trust me and good luck :)
The theory that the planets move around the sun was endorsed by Aristarchus, Copernicus, as well as Galileo. The solar system revolves around the sun.
What is Aristarchus?Aristarchus of Samos was just a Greek astronomer that suggested the very first heliocentric model of the cosmos, wherein the sun, rather than the earth, was even at its center. Despite the fact that his hypothesis was acknowledged by other philosophers of the time, it was dismissed as unrealistic, and the geocentric model remained in use for the next 1,700 years.
What is Copernicus?Copernicus was also the first to assert that the Earth as well as the other planets orbit the sun. It was really a significant shift in thinking.
What is sun?Sun can be considered as a star in solar system.
The theory that the planets move around the sun was endorsed by Aristarchus, Copernicus, as well as Galileo. The solar system revolves around the sun.
Therefore, the correct answer will be option (b).
To know more about Aristarchus and Copernicus
https://brainly.com/question/12401405#SPJ2
determine the molar mass for ammonia (NH3) in g/mol.
Answer:
17.031 g/mol
Explanation:
How does energy from Earth’s interior affect surface changes?
Answer:
Energy produced deep inside Earth heats rock in the mantle. ... As it becomes less dense, the heated rock rises toward Earth's surface. The cooler, denser rock surrounding the heated rock sinks, as Figure 5 shows. In this way, heat inside Earth moves toward the cooler crust.
Explanation:
do you like my og name
Energy from Earth’s interior affect surface changes due to:
Earth heat transport occurs by conduction, mantle convection, hydrothermal convection, and volcanic advection. Thus, about 99% of Earth's internal heat loss at the surface is by conduction through the crust, and mantle convection is the dominant control on heat transport from deep within the Earth.Tectonic processes and flow in Earth's interior drive deformation of Earth's surface that can lead to destructive earthquakes, tsunamis, and volcanic eruptions.Learn more:
brainly.com/question/25543134
How many atoms are in 1 mole of water, H2O?
Answer:
1.807×10and at the top of ten put -24
Solid mercury (II) oxide produces liquid mercury and oxygen gas
Mercury(II) oxide, a red solid, decomposes when heated to produce mercury and oxygen gas. Mercury(II) oxide is a red solid. When it is heated, it decomposes into mercury metal and oxygen gas. A reaction is also considered to be a decomposition reaction even when one or more of the products are still compounds.