Answer:
Hey mate...
Explanation:
This is ur answer....
EffervescenceEffervescence is the escape of gas from an aqueous solution and the foaming or fizzing that results from that release.
Hope it helps!
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Explanation:
Your answer is effervensecence
Cual es la fórmula del anhidrido fosfórico ?
P₂O₅
English-
the formula to phosphoric anhydride is P₂O₅
Spanish-
la fórmula del anhídrido fosfórico es P₂O₅
what is the mass in grams of 0.250 mol of the common antacid calcium carbonate?
Answer:
Molar mass CaCO3 = 100 g/mol
Explanation:
So if we have 75 four or 5 g of the sample And there is 25.8 Percent calcium carbonate by mass. That's 25.8 g of calcium carbonate In 100 g of the sample. I'll do the most application at the end. Um And then if we know the grams of calcium carbonate, well, just reverse the conversion factor. Yeah, 100 g of the sample contains 25 0.8 grams of calcium carbonate. And when we do this, multiplication division, for part a 75.45 Times 25.8, divided by a 1000 Uh 23 significant figures is 1.9 five g of calcium carbonate. Mhm. And then for part B 18.8 times 100 Divided by 25.8 is 2. 3 significant figures 72 0.9 grams. Mhm of the sample. Yeah.
Determine whether each of the following reactions is spontaneous.
AHsystem = -75.9 kJ, T = 273 K,
ASsystem = 138 JIK
Answer:
gxibdkkzvsosvjzkxvdkbdsibsisbdkbslabdldvslbskskd
If you have 460 grams of H2o, how many molecules are present?
During a science lesson on rocks and minerals, Mrs. Franks passed out a sample case of rocks, minerals, fossils, and gemstones. Looking at the samples, what are the three types of rocks found in the case? A) igneous, minerals, gemstones B) fossils, minerals, gemstones C) sedimentary, fossils, gemstones D) igneous, sedimentary, metamorphic
Answer:
wouldn't it be (D)
Explanation:
Igneous, Sedimentary & Metamorphic, because those are the type of rocks?
Answer:
D
Explanation:
Can someone tell me the answers
Answer:
cadmium- Cd,
physical state= solid at room temperature
Manganese- Mn
physical state= solid at room temperature
Answer:
Cd
cadmium
112.41
transition metal
Mn
manganese
54.94
transition metal
Rn
radon
222.02
noble gas
Calculate the average atomic mass for the element beryllium, given this information about the
relative abundance of its 3 isotopes.
Be-8 = 0.2% Be-9 = 98.9% Be-10 = 0.9%. Please show all your work.
Answer: 9.007
Explanation:
Be-8 8 x 0.20% = 0.016
Be-9 9 x 98.90% = 8.901
Be-10 10 x 0.90% = 0.09
100.00% 9.007
Which pair of diseases could both be treated effectively with antibiotics
A. athletes foot and flu
B. cholera and salmonella
C. flu and scurvy
D. malaria and rickets
Imma mark the correct answer brainliest
Answer:
cholera and salmonella
Explanation:
i believe so
why the elements of groups 1 and 7 are mostly used in the form of compound
The answer is:
Because they have 1 more or less electron in there last orbit, so they are very active to form compounds which make them stable.
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write a brief description explaining the term "luminous" to a classmate
Answer:
Plz mark as brainlist
luminous is relating to light as it is perceived by the eye, rather than in terms of its actual energy.
A brief description explaining the term "luminous" to generating or reflecting brilliant light, particularly at night: luminous attire. The bright glow of laptops illuminated the library.
What is luminous ?Luminous objects are things like the sun that produce or radiate light on their own. Others include a torch, an electric lamp, etc. Non-bright objects are those that don't emit any light of their own and can only be seen when light from a luminous source reflects off of them. Moon, a chair, a painting, etc. are a few examples.
Luminous objects are defined as those that produce their own light. Just the sun emits its own light; all other things only reflect light that is incident upon them.
The presence of luminous items produces the feeling of light. These things are visible because they independently emit light. As an illustration, consider the Sun, the stars, lightbulbs, torches, tube lights, candles, and so on.
Thus,the term "luminous" to generating or reflecting brilliant light, particularly at night: luminous attire. The bright glow of laptops illuminated the library.
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describe atom in your own words
Answer:An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is usually surrounded by one or more electrons. Each electron is negatively charged. The nucleus is positively charged, and contains one or more relatively heavy particles known as protons and neutrons.
Explanation:
Answer:
Hello, There! I'll be glad to help!
Questiondescribe atom in your own words
AnswerThe atom is the smallest unit of an element that retains the properties of that element.
Explanation:
At the center of the atom, there is a very small region called the nucleus. This area makes up most of the mass of the atom.The area around the nucleus is called the electron cloud. This area makes up the majority of the volume of the atom. The electron cloud is mostly empty space.
Therefore, I hope this helps!
How do the metals in group 1 compare with the transition metals? List at least 3 points.
PLEASE HELPPPP Fastttt!
Which two statements describe a mixture?
O A. It is a pure substance.
O B. It includes atoms of different elements.
O C. Its parts can be separated using physical means.
O D. It can result from chemical bonding.
Answer:
d
Explanation:
because the chemicals or substances mix together so it's basically like chemical bonding.
write the relation between group number and electronic configration
Answer:
Explanation: the number of circles in the electronic configuration of an element is represented in the periodic table as the period number that element is situated in. the number of electrons in the outermost shell of an element is represented in the periodic table as the group number that element is situated in.
complete and balance the equation pb3o4+hcl
ur so ok.
Explanation:
i need points ok.
thanks
nono noonobbvyubojikkhbjhbjhb mj bk n
Use the following image to answer the following questions. A student was performing an experiment using two identical cups made of styrofoam. The student had Cup A holding water at 90℃ and Cup B holding water at 20℃. The student then put an Aluminum Bar into each cup that was touching the water. As time passed, the student noticed that the temperature of the water in Cup A and Cup B began to change. Question:
A. Predict what will happen to the temperature of the water in Cup A and Cup B after 1 hour has passed. (1 point)
B. Explain and give evidence for what type of heat transfer is occurring between the 2 cups.
In cup A, the temperature of the water will drop after 1 hour and the temperature of the aluminium will rise. In cup B, there will be no change in temperature of the water and the aluminium. The type of heat transfer taking is conduction.
When two bodies at different temperatures come into contact which other. Heat is transferred from the hotter body to the cooler body until thermal equilibrium is achieved between the two bodies. The temperature of the water decreases while that of the aluminium bar rises.
The aluminium bars were put into the two cups holding water at 90℃ and 20℃ respectively. Since the water in cup A is at a higher temperature than the aluminium, heat is transferred from the water to the aluminium bar until thermal equilibrium is achieved.
In cup B, there is no temperature difference between the water and aluminum hence no heat transfer occurs. Note that a mode of heat transfer that depends on temperature difference between two bodies in contact is conduction.
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Why do airplanes have the cruising altitude in the stratosphere?
Which term best describes the relationship between mass and volume of a substance?
(3 Points)
Density
Solubility
Specific Heat
Melting Point
Answer: Density
Explanation:
Density = (mass)/(volume)
I need help with this problems to know if they have reaction or no reaction.
1) Cr(s) +Co(NO3)2 (aq).
2) Ni(s) + Li2CO3(aq)
3) Co(s) + HCl(aq)
4) Cd(s) + H2SO4(aq)?
Answer:
i thank its 4)
Explanation:
becuse if they have reactino or no reatino will it 4) becuse i did this
What is the difference between variable and fixed costs?
Answer:
Variable costs are costs that change depending on the amount of the product you are providing. Fixed costs On the other hand are costs that are the same no matter how much of the product or service you are providing. Fixed costs are also called overhead or fixed operating costs.
_________________________________
[tex]\boxed {\sf Variable \:costs:-}[/tex]
The materials for making the bracelet are a variable cost, because the amount of materials you buy changes depending on how many bracelets you are making.
[tex]\boxed {\sf Fixed \:costs:-}[/tex]
If you pay rent for a warehouse each month, the amount you pay in rent is the same each month. It doesn't go up or down depending on how many sales you make.
[tex]\boxed {\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:}[/tex]
Would a candle burning be a chemical or physical change? Why?
What neutral element has 17 electrons an 18 neutrons?
Answer:
chlorine atom
A chlorine atom has 17 protons, 18 neutrons, and 17 electrons.
Explanation:
Answer:
chlorine atom
Explanation:
A chlorine atom has 17 protons, 18 neutrons, and 17 electrons.
20 ml of a solution of sucrose contains 850 mg of sucrose. What is the weight/volume percentage concentration of this solution in g/ml%
Explanation:
weight/volume percentage concentration = (mass in g ÷ volume) × 100
= (0.850 g ÷ 20 ml) × 100
= 4.25 g/ml %
∴ the weight/volume percentage concentration of the sucrose solution is 4.25 g/ml %.
how do chemicals affect the enviornment? A. they work together with the enviornment B. they can both hurt and help the enviornment C. they only help the enviornment D. they only hurt the enviornment
Answer:
A. they work together with the environment.
Explanation:
Because work together is what keep the environments clean and tidy.
PLZ HELP ASAP! Select 3 examples of pure substances Nitrogen gas, A cheeseburger, Ocean water, A glass of sweet tea, Oxygen
Answer:
nitrogen gas, oxygen, and ocean water
Hope it helps!
Explanation:
Answer: Nitrogen Gas, Oxygen, Ocean water
Explanation:.yes
plz solve and send photo of anwer plz I need it fast
How is thermal energy transferred by convection, conduction, and radiation?
Answer:
Radiation is responsible for most of the heat transferred into the room. Heat transfer also occurs through conduction into the room, but at a much slower rate. Heat transfer by convection also occurs through cold air entering the room around windows and hot air leaving the room by rising up the chimney.
When a fluid, such as air or a liquid, is heated and then travels away from the source, it carries the thermal energy along. This type of heat transfer is called convection. The fluid above a hot surface expands, becomes less dense, and rises. ... A space heater is a classic convection example.
I'll be eternally grateful to whoever can help me!
Each of these Ionic Compounds are named INCORRECTLY.
1. Find and describe the mistake
2. Correctly name the compound.
CaCl2 - Calcium Chlorine
CuS - Copper Sulfide
Li3P - Trilithium Phosphide
CuBr - Copper(II) Bromide
NaOH - Sodium Hydrogen Oxide
Explanation:
The nomenclature of ionic compounds is given by:
1. Positive is written first. And if the metal atom has various oxidation states then its oxidation state is to be mentioned in brackets with help of roman numbers
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
1.) : Calcium chloride (Correct)
In the given compound, calcium has oxidation state of +2 and chlorine has oxidation state of -1.The name is correct.
2.) : Copper (II) oxide (Incorrect)
In the given compound,copper has the oxidation state of +1 and oxygen has oxidation state of -2.So ,the correct name will be Copper (I) oxide.
3.) : Lead (II) sulfide (Incorrect)
In the given compound, lead has the oxidation state of +4 and sulfur has oxidation state of -2. So ,the correct name will be Lead (IV) sulfide.