Answers
Answer:
7... simalair: made of more than 2 things DIffernt: elemants are made of atoms.
Explanation:
Related Questions
200 cm is equal to how many meters?
Answers
There are 100 centimeters in 1 meter!
What kind of bond is made up of shared electrons?
A. A covalent bond
B. An ionic bond
C. A hydrogen bond
D. An electrostatic bond
Answers
Answer:
A. A covalent bond.
Need a longer answer...
a covalent bond
AP ex
5) If an atom has a positive charge what is it called?
Answers
Answer:
An atom that has a negative or positive charge it is called an ion.
Answer:
It''s called a Cation
Explanation:
Would you expect hydrogen chloride to be a gas , liquid ,or a solid at room temp and pressure ?
Answers
Answer:
I think they are gases
Explanation:
yes, I think they are gases, but I am not sure.
) what happens when CO2 passed over time water
for short period of time? Explain
Answers
Answer:
When carbon dioxide is passed through lime water for a short time,it turns lime water milky due to formation of a white precipitate of calcium carbonate.
Explanation:
Carbon dioxide dissolves in water and slowly reacts with water to produce carbonic acid. The cloudy white solution observed when CO2 is bubbled into limewater results from a reaction between Ca(OH)2 and either CO2 or H2CO3 to form an insoluble calcium carbonate precipitate.
Is zinc coMpund Plz help me
Answers
Answer:
it is indeed a compound
Explanation:
A compound contains two or more elements or molecules like H2O. Where H is 1 element and Oxygen is another and together they make a compound.
Zinc itself is a single molecule (or element) and can be used in a compound like ZnO (zinc oxide)
A model of a beryllium atom is shown below. What types of particles are found in the cloud surrounding the atom’s nucleus?
Answers
Answer:
Neutral particles and positively charged particles
1)state Non-Mendillian's Law of Inheritance.
2)What are the two alleles for flower color in snapdragon?
Answers
Answer:
These questions are not chemistry darling. You have chosen the wrong subject
Your friends car has stalled in the road. You help you friend push the car off the road. Your friend pushed with a force of 55 N and you push in the same direction with a force of 60 N. How much force is being applied to the car
Answers
Answer:
115N
Explanation:
your friend and you push the car at the same time at the same direction so you add the force your friend is using and the force you’re using so: 60+55=115N
Select all that apply.
How would you compare Venus's rotation to Earth's rotation?
Venus's rotation is backward compared to Earth's.
Venus's rotation is the opposite compared to Earth's.
Venus's rotation is retrograde compared to Earth's.
Venus's rotation is the same compared to Earth's.
Answers
Answer:
Venus's rotation is retrograde compared to Earth's.
Explanation:
Firstly its axis of rotation is inclined at 177.36 degrees (compared to 23.5 degrees on Earth). This means that Venus rotates in a retrograde direction from east to west, making the Sun rise in the west and set in the east. Further to this the rotation is very slow: a sidereal day on Venus lasts 243 Earth days.
why is it easier to remove an electron from a sodium atom than a magnesium atom
Answers
Which half-reaction correctly describes an oxidation?
Upper C a (s) plus 2 e superscript minus right arrow upper C a superscript 2 plus (a q).
Upper B r subscript 2 plus 2 e superscript minus right arrow 2 upper B r superscript minus.
Upper N a superscript plus (a q) right arrow upper N a (s) plus e superscript minus.
Upper C r (s) right arrow upper C r superscript 3 plus (a q) plus 3 e superscript minus.
Answers
Answer: The Answer was D. These people trolling. Look at the attachments I put on
Explanation:
An oxidation half reaction is one in which electrons are lost. Hence the reaction, Cr^3+(aq) ----> Cr(s) + 3e is an oxidation reaction.
What is oxidation?The term oxidation has to do with the loss of electrons. When an oxidation half reaction takes place, a specie loose electrons. We will now look out for the reaction in which electron loss takes place.
Now, in option D, the reaction is Cr^3+(aq) ----> Cr(s) + 3e. Three electrons where lost here hence this is an oxidation half reaction.
Learn more about oxidation: https://brainly.com/question/9496279?
what would be the definition of chemical indicators?
Answers
Answer:
Chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.
Explanation:
Kendrick goes to his neighborhood gym to exercise. The process of cellular respiration makes it possible for him to run on the treadmill and to lift weights. What do Kendrick's cells do during cellular respiration?
His cells convert kinetic energy into chemical energy.
His cells use oxygen to break down food molecules to release energy.
His cells absorb light energy through the chlorophyll in their chloroplasts.
His cells combine water and carbon dioxide to produce oxygen and glucose.
Answers
Answer: His cells use oxygen to break down food molecules to release energy
Explanation:
Answer:B
Explanation:
need help i dont get this
Answers
Answer:
Speed
Explanation:
Because That's how fast the Car is traveling.
PLEASE HELP ME WITH THIS CHEM WORK!!!
I’LL GIVE A BRAINIEST TO WHOEVER GETS IT RIGHT:)
1.) 50.0 grams of water at 100 degrees Celsius evaporated to water vapor 2 points
at 100 degrees Celsius. Calculate the amount of heat required for this
conversion.
2.) A student measured 15.0 grams of ice in a beaker. The beaker was then
placed on a hot plate where it was heated uniformly for a certain amount
of time. During the melting process of the ice, the student noted that the
temperature was at 0 degree Celsius. When all the ice converted to water,
the final temperature was also at 0 degree Celsius. How much heat was
used to melt the ice?
Answers
1. Q = 112.8 kJ
2. Q = 5.01 kJ
Further explanationThe heat to change the phase can be formulated :
Q = mLf (melting/freezing)
Q = mLv (vaporization/condensation)
Lf=latent heat of fusion
Lv=latent heat of vaporization
1. m=50 g=0.05 kg
Lv for water = 2256 kJ/kg
[tex]\tt Q=m.L_v\\\\Q=0.05\times 2256\\\\Q=\boxed{\bold{112.8~kJ}}[/tex]
2. m=15 g=0.015 kg
Lf for water = 334 kj/kg
[tex]\tt Q=m.L_f\\\\Q=0.015\times 334\\\\Q=\boxed{\bold{5.01~kJ}}[/tex]
PLEASEHELP WILL MARK BRAINLIEST
Answers
Answer:
2. Isotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behavior but with different atomic masses and physical properties. Every chemical element has one or more isotopes.
3. Since the vast majority of an atom's mass is found its protons and neutrons, subtracting the number of protons (i.e. the atomic number) from the atomic mass will give you the calculated number of neutrons in the atom. In our example, this is: 14 (atomic mass) – 6 (number of protons) = 8 (number of neutrons).
Explanation: Try rewording the questions when looking it up. Hope this helps
Answer:
9. 2(2n^2)
10. Electron Shell
11.-
12.-
13.-
14.-
Explanation:
i hope it helped
A sample of gas under pressure of 882kPa has a volume of 312cm3. The pressure is increased to 948kPa. What volume will the gas occupy at the new pressure, assuming that the temperature is constant?
Answers
Answer:
V₂ = 290.3 cm³
Explanation:
Given data:
Initial pressure = 882 KPa
Initial volume = 312 cm³
Final pressure = 948 KPa
Final volume = ?
Solution:
The given problem will be solved through the Boly's law,
"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"
Mathematical expression:
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
Now we will put the values in formula,
P₁V₁ = P₂V₂
882 KPa× 312 cm³ = 948 KPa × V₂
V₂ = 882 KPa× 312 cm³/ 948 KPa
V₂ = 290.3 cm³
Which model uses nuclear fusion Thomason model or the Bohr model (it’s the second bullet point)
Answers
Answer:
Aye bro you from discovery too
Explanation:
True or False? If friction didn’t exist, an object in motion would stay in motion forever.
Answers
Answer:
True
Explanation:
Friction is defined as the force that opposes motion when an object is sliding over a surface.
As a result of friction, all objects moving over a surface eventually come to rest over time.If we were to successfully create a friction-less surface, an object will remain in motion forever because it will encounter no opposition to its motion.
Hence, the resistance to the motion of objects over a surface which causes the objects to come to a halt after moving over the surface for some time is called friction.
Explain why you can not use a physical reaction to separate elements that are chemically bonded together
Answers
What is an organelle?
A. the basic building block of living things; the smallest piece of every organism that has all of the characteristics of a living
thing and can perform all life functions
B. one small part in or around a cell that has a very specialized job or function
C. structure, such as a heart or a leaf, made up of different types of tissues that all work together.
D. the smallest unit of an element that can be considered that element; they make up all matter
Answers
Answer:
A
Explanation:
The basic building block of living things; the smallest piece of every organism that has all of the characteristics of a living thing and can perform all life functions, An organelle is a subcellular structure that has one or more specific jobs to perform in the cell, much like an organ does in the body.
Question 5: Causes of Molecular Shape (3 points)
a. What is the VSEPR theory? (1 point)
b. How does electron repulsion determine molecular shape? (1 point)
c. How do lone electron pairs affect molecular shape? (1 point)
Answers
Answer:
A. VSEPR theory assumes each atom molecule has a geometry to help minimize the repulsion between the electrons within the valence shell of the central atom.
B. Repulsion determines the molecular shape as the electrons are negativley charged. The negativity makes the atoms spread out as much as possible.
C. Lone electron pairs have greater repelling effects as they are closer to the nucleus of the central atom unlike bonding pairs.
Explanation:
What are the coefficients when the chemical equation below is balanced?
_Fe + _H2SO4 = _Fe2(SO4)3 + _H2
A) 2,3,3,3
B) 3,2,3,1
C) 1,1,1,1
D) 2,3,1,3
Answers
The picture shows a periodic table with elements X and Y.
If the atomic number of element X is 3, then what is the atomic number of element Y?
A. 5
B. 7
C. 19
D. 25
Answers
Answer:
7
the atomic number of element X is 3, then atomic number of element Y is 7
Help with chemistry question. Look at image.
Answers
Answer:
It is called the periodic table because of the way he elements are arranged. You'll notice they're in row and columns. The horizontal rows are called periods and the vertical columns are called groups. (so I believe it's A or C) sorry if I get this wrong..
awnser for brainlist
Answers
Answer:
D
Explanation:
i might be wrong but im sorry if i am
Answer:
D
Explanation:
The roadrunner eats the scorpion. Thus, it's the predator and the scorpion is the prey
A large balloon contains 233 L of neon at 22.0C and 760. Torr. If the balloon ascends to an altitude where the temperature is - 52.0C and the pressure is 511 torr, what is the volume in the balloon at the higher altitude?
Answers
Answer: The volume in the balloon at the higher altitude is 260 L
Explanation:
The combined gas equation is,
[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
where,
[tex]P_1[/tex] = initial pressure of gas = 760 torr
[tex]P_2[/tex] = final pressure of gas = 511 torr
[tex]V_1[/tex] = initial volume of gas = 233 L
[tex]V_2[/tex] = final volume of gas = ?
[tex]T_1[/tex] = initial temperature of gas = [tex]22.0^0C=(22.0+273)K=295K[/tex]
[tex]T_2[/tex] = final temperature of gas = [tex]-52.0^0C=(-52.0+273)K=221K[/tex]
Now put all the given values in the above equation, we get:
[tex]\frac{760\times 233}{295}=\frac{511\times V_2}{221}[/tex]
[tex]V_2=260L[/tex]
The volume in the balloon at the higher altitude is 260 L
How does the mass of an atom effect the amount a charged atom gets deflected?
Answers
products or solutions found at home or in store and their characteristics
Answers
Answer:
bruh, just go in your bathroom and look for cleaning products
Explanation:
