Answer:
Fossils: 3.5 billion. Rocks: 4.28 billion
they were found during Haden Eon
Explanation:
*2Al(OH), + 3H,SO, Al(SO4)2 + 6H2O
reaction type
Calculate the molarity of a solution prepared by dissolving 3.80 grams of AgNO3 in enough water to make 3.50 liters of solution. (If possible show process)
Answer:
By the end of this section, you will be able to:
Describe the fundamental properties of solutions
Calculate solution concentrations using molarity
Perform dilution calculations using the dilution equation
what properties of aluminum make it particularly useful in drinking cars
Answer:
in doesn't rust which sends meatel into the drink
Explanation:
u are welcome
Which has a lower electronegativity and why? N or P? Use 'force of attraction' in your answer
Answer:
The electron sets divided among two particles are not really shared similarly. For instance, while the common electron sets are shared similarly in the covalent security in Cl2, in NaCl the 3s electron is taken from the Na iota and is fused into the electronic design of the Cl molecule - and the compound is most precisely portrayed as comprising of individual Na+ and Cl− particles (ionic holding). For most covalent substances, their bond character falls between these two limits. We showed beneath, the bond extremity is a helpful idea for portraying the sharing of electrons between molecules inside a covalent bond:
A nonpolar covalent bond is one in which the electrons are shared similarly between two particles.
A polar covalent bond is one in which one iota has a more noteworthy fascination for the electrons than the other molecule. On the off chance that this overall fascination is sufficiently incredible, the bond is an ionic bond.
Explanation:
What is the molar mass of CO
Question:
→What is the molar mass of CO
Answer:
→28.01 g/mol
Which of the following is NOT an example of a change of state? *
HELP PLSSSSSS
Plants using photosynthesis to produce food.
Liquid water in perspiration changes to a gas when it evaporates.
An ice cream cone melts, forming a liquid.
Answer:
Plants using photosynthesis to produce food.
Answer:
the icecream one is not an example
6.022 x 10^23 atoms of calcium.
What is the mass?
Answer:
(6.02214179×1023) / one mole of substance. How many atoms are in a 3.0 g sample of sodium (Na)?
Explanation:
Answer:
Explanation:
Mass is 1.000
Which is a TRUE statement about
London Dispersion Forces?
ELECTRON moving causes partial
positive & negative charges creating
attraction
PROTON movement causes partial
positive & negative charges creating
attraction
Answer:
The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles. Dispersion forces are present between any two molecules (even polar molecules) when they are almost touching.
Thus PROTON movement causes partial positive & negative charges creating
attraction will be crrt
a tennis ball travels the length of rhe court, 24 m, in 0.5 s. Find its average speed
Answer:
48m/s
Explanation:
A large piece of iron was reacted with an acid. What would happen to the rate of the reaction had the large piece been finely divided into smaller pieces? (1 point)
It will decrease because the reactant particles are moved farther apart.
It will increase because the reactant particles are brought closer together.
It will decrease because larger particles provide more surface area to react.
It will increase because smaller particles provide more surface area to react.
Answer:
D: It will increase because smaller particles provide more surface area to react.
Explanation:
When the large iron is broken up into smaller pieces, there are more places for the iron to react (meaning there's more surface area). Think of it like taking the surface area of a big cube compared to the surface area of a bunch of small cubes. The sum of the surface areas of the small cubes will be greater than that of the large cube. As a result, more places for the iron to react will cause for a greater reaction.
Answer: D It will increase because smaller particles provide more surface area to react.
which is the SI unit used to measure the temperature of a substance
Answer:
Kelvin
Explanation:
Answer:
Kelvin
Explanation:
Which of the following elements has the lowest normal boiling point? 4 points A. Ne B. He C. Ar D. Kr
Answer:
B. He
Explanation:
Write the word and balanced chemical equations for the reaction between:
Sulfuric acid + aluminum hydroxide
Answer:
Alumminum hydroxide reacts with sulfuric acid as follows: 2Al(OH)3+H2SO4-->Al2(SO4)+6H2O.
Explanation:
plz mark as brainlist
When the Hubble Space Telescope was first launched, it was the most advanced technology of its kind. Astronomers and astrophysicists all over the world celebrated its launch. Why was this event so important to these scientists?
1. Hubble provided a new way to study Earth's atmosphere.
2. Hubble proved that we could launch a telescope into space.
3. Hubble provided scientists with data about the Universe they had previously been unable to collect.
4. Hubble was able to collect physical samples from celestial bodies they had previously been unable to reach.
please help me
Answer:
C
Explanation:
its correct
''Hubble provided scientists with data about the Universe they had previously been unable to collect.'' is the right statement.
Benefits of Hubble Space TelescopeHubble Space Telescope helps the scientists to collect more data about the Universe which they had previously been unable to collect due to lower range of telescope.
This telescope has longer range and can see distant objects very clearly in the space so we can conclude that ''Hubble provided scientists with data about the Universe they had previously been unable to collect.'' is the correct statement.
Learn more about telescope here: https://brainly.com/question/18300677
Based on Avogadro's principle, the coefficients in chemical equations involving only gases represent two types of quantities. Name the two quantities.
Answer:
subject
Chemistry, 08.04.2020 04:39 dnprops1544
Based on Avogadro's principle, the coefficients in chemical equations involving only gases
represent two types of quantities. Name the two quantities.
Explanation:
Answer: Molar ratio is the quantity which will correctly convert between two different substances.
Answer: Option B
Explanation:
Molar ratio is used to determine the number of moles of reactants required to convert to desired number of moles of the products and vice versa. As moles are the coefficient written in any chemical equation. The ratio of the number of moles of the reactants to the number of moles of the products will help to determine the molar ratio.
This molar ratio is used as the conversion factor to determine number of moles required in the reactant side for the reactants to form a desired product of desired moles. We can also determine the number of moles utilized from the reactants from the moles obtained in the products using this molar ratio conversion factor.
in the single replacement reaction AB + C → A + CB, the anion in the reactant compound AB is _______
Answer:
The anion is B.
Explanation:
Compounds are usually written as [cation][anion], and the positive charge of the cation (A) will cancel out the negative charge of the anion (B). We are reaffirmed of our answer by the product CB, which also has B as an anion.
Answer:
B
Explanation:
hear me out!! am I the only one who gets headaches on the daily? why do I get them?
Answer:
Same i have headaches daily, maybe from infections such as meningitis or Intracranial pressure that's either too high or too low or id.k.
Question: If red dye is added to cold water and blue dye is added to warm water, which dye will
spread out quicker?
Answer:
Blue dye spreads out quicker
Explanation:
This is because the dye gets spread out by water molecules. Warm water has faster moving water molecules than cold water.
11. How many elements do all the "P" orbital span (go across) in each period? (circle your answer)
a) 2
b) 6
c) 10
d) 14
Answer: B
can u pls give me brain list?
What is the correct formula for the compound formed by Mg and F?
MgF
Mg2F
Mg2+F
MgF2
Look at picture
ASAP please will mark as brainlist don’t got much time
Magnesium phosphate
Find Similar Structures
Molecular Formula
Mg3(PO4)2 or Mg3O8P2
Synonyms
magnesium phosphate
More...
Molecular Weight
262.86 g/mol
each year, one person in north america uses resources equal to how much land? A. 12 miles B. 12 acres C. 120 acres
Put the rules in order, first rule up top.
FIRST RULE
= Balance Oxygen
= Write down the elements
= Balance Hydrogen
= Balance non-metals
Balance metals
Answer:
Write down the elementsBalance MetalsBalance Non- metalsBalance OxygenBalance Hydrogen.А
What is the chemical symbol for Hydrogen?
A.OCH
B.оне
C.Н
D.он20
Answer:
the answer to this is ( H )
Which of the following conditions must be met for a volume ratio to be created from a balanced chemical equation? (3 pm
O Changing temperature and pressure
Constant temperature and pressure
Changing temperature and constant pressure
Constant temperature and changing pressure
Answer:
The answer will be Constant temperature and pressure
Explanation:
Just took the test and it was correct 100%!!!
Answer:
Constant temperature and pressure
Explanation:
took the test
Work = Force X Distance A dog pulls a ball with 5N of force for 4 m. How
much work did the dog do?*
Answer:
W = 20 J
Explanation:
Given that,
The force acting on the dog, F = 5 N
Distance covered, d = 4 m
We need to find the work done by the dog. The work done by an object is given by :
W = Fd
Put all the values,
W = 5 N × 4 m
W = 20 J
So, 20 J of work is done by the dog.
Fe2O3 the valance number
Answer:
3
Explanation:
Answer:
Valence of Fe-3
Valence of O-2
Approximately what is the minimum temperature needed to dissolve 10 g of KNO3 in 100 g H2O?
Round your answer to the nearest whole number and type in the number only; no units.
Answer:(a) Potassium nitrate will begin to crystallise at about 56 °C, when its solubility is 100 g/100g water.
Explanation:
what is 54-34+87x56
How is everyone on this beautiful day?
Also if u need to hear that someone loves u i do even if i don't know u
Answer:
5,992
Explanation:
and thank you! ♥
YOU DO:
1) What volume of 0.25M lithium fluoride solution can be made by dissolving 5.0 g lithium fluoride, LiF?
Answer:
0.7712 L
Explanation:
Molarity = 0.25M
Volume = ?
Mass = 5.0 g
The relationship between these quantities is given as;
Molarity = Number of moles / Volume
Volume = Number of moles / Molarity
Number of moles = Mass / Molar mass
Molar mass of LiF = 25.939 g/mol
Number of moles = 5 / 25.939 = 0.1928 mol
Volume = 0.1928 / 0.25 = 0.7712 L
How many atoms for each element in this compound:
Pb3(PO4)2
Pb =
P=
O=
Answer:
In the compound Pb3(PO4)2, there are 3 Pb atoms, 2 P atoms, and 8 O atoms.
Let me know if this helps!
There are 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen) are present in Pb3(PO4)2.
What is an atoms?An atom is the smallest constituents of matter that can neither be created nor be destroyed.An atom It consists of a central nucleus, usually surrounded by electrons. Each electron is negatively charged. The nucleus is positively charged, and contains relatively heavy particles known as protons and neutrons.What are Compounds?
A compound is a combination of atoms of same or different types of an element in a fixed ratio.
In the given question Pb3(PO4)2 is a compound of lead phosphate which is made up of 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen).
Learn more about atoms here: http://brainly.com/question/6258301
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