Answer:
two moles
There are two moles.
Explanation:
Calculate the mass of hydrochloric acid needed to react with 15.8 moles of zinc.
HCl + Zn -> H2 + ZnCl2
Answer:
240.1428
Explanation:
I hope this helps! :<
what is rusting of iron?
Answer:
Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Unlike rust, which can flake off the surface of iron and steel objects, the layer of aluminium oxide does not flake off.
Explanation:
Explain what happens to the particles in a substance during a physical change.
Answer:
Particles stay the same unless there is a chemical change whether the matter is solid, liquid or gas.
Explanation:
in physical changes no new materials are formed and the particles do not change apart from gaining or losing energy
What group on the periodic table is more reactive 5 or 6 and why?
Answer:
heheeheheh
Explanation:
Identify processes that change matter to a liquid state
What is the smallest representative particle of an element?
Answer:
atom
Explanation:
The smallest representative particle of an element is an atom.
What are atomsAtoms are the fundamental building blocks of matter and the smallest unit of an element that retains the chemical properties of that element. Each atom consists of a nucleus at the center, composed of positively charged protons and neutral neutrons, surrounded by a cloud of negatively charged electrons.
Atoms combine to form molecules or ions through chemical reactions, but they themselves represent the basic structure and identity of an element. Each element has a unique number of protons in its nucleus, known as its atomic number, which determines its position on the periodic table and its distinct chemical properties.
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Which element is in the same period as Potassium (K) and in the same
group as Flourine (F)?
O A. Bromine (Br)
O B. Oxygen (O)
O C. Selenium (Se)
O D. Argon (Ar)
Answer:
A. Bromine (Br)
Explanation:
How many significant figures are in the value 0.00250 m?
Answer:
3 significant figures
Explanation:
Significant figures:
1) The given measurement have four significant figures 1234.
2) All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
3) Zero between the non zero digits are consider significant like 104 consist of three significant figures.
4) Leading zeros are not consider as a significant figures. e.g. 0.07 in this number only one significant figure present which is 7.
5) The zeros at the right side e.g 2600 are also significant. There are four significant figures are present.
In given measurement (0.00250 m) number of significant figures are 3.
2,5 and 0
Hi! I produce proteins inside the cell. What am I?
Answer:
ribosome is the cell
Explanation:
hsduuejxkwnckwnirj
What is the name of Na3N?
HELP PLEASEEEE !!!!
Answer:
the answer I's the first one
True or false for these!!!! Please help
3. All the deer in Horry County represent which of the following?
species
biome
population
community
Answer:
community
Explanation:
Answer:
The correct answer is population. I took the test and got it right.
Which statements describe the fossil record? Check all that apply.
There is very little fossil evidence for the first 4 billion years of Earth.
There is very little fossil evidence for the last 600 million years of Earth.
Most of the fossil evidence is from the first 4 billion years of Earth.
Most of the fossil evidence is from the last 600 million years of Earth.
The fossil record is complete.
The fossil record is not complete.
Answer:
A D F
Explanation:
look at attachment if you don't believe me
Which of an atom's electrons are involved in chemical reactions?
ANSWER: D
A. The electrons that make one isotope different from another
B. The electrons closest to the nucleus of the atom
C. The electrons that determine the atomic number of the atom
D. The electrons farthest from the nucleus of the atom
it’s C
i hope i help you but if not DO NOT FORGET STAY SAFE AT HOME
Answer:
D.
Explanation:
The electrons farthest from the nucleus of the atom
Which type of mass movement is the most destructive?
creep
erosion
landslide
slump
Answer:
•landslide
Explanation:
Landslides are exceptionally destructive. Homes may be destroyed as hillsides collapse. Landslides can even bury entire villages. Landslides may create lakes when the rocky material dams a stream.
The type of mass movement is the most destructive landslide.
What is landslide?Several forms of mass wasting that may include a wide range of ground movements, such as shallow or deep-seated slope failures, rockfalls, mudflows, and debris flows are known as landslips or landslide.
Sometimes more than one type of movement occurs within a single landslide, and analysis of each requires detailed interpretation of landforms and geological sections.
Landslides are exceptionally destructive. Homes may be destroyed as hillsides collapse. Landslides can even bury entire villages. Landslides may create lakes when the rocky material dams a stream.
There are measures that can be taken to reduce the potential for a landslide to occur, such as steep slope reinforcement, installing structures using pile foundations and checking surface drainage. The easiest way to prevent a landslide is to avoid building in areas that are – or might become – prone to landslides.
Given options are-
creep
erosion
landslide
slump
Therefore, The type of mass movement is the most destructive landslide.
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Help me on both of those questions please
Answer:
Hey mate.....
This is your answer....
Explanation:
1. Evaporation
2. Liquid to solid
hope it helps you,
mark me as the brainliest.....
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what will happen an unboiled egg is placed in the beaker of fresh water and salt water
Answer:
Explanation:
1
____ power is generated from the heat released when uranium atoms split in a process known as fission.
What is the geometry for MgF2?
Answer:
espero poderte ayudar
Explanation:
Answer:
2FMg
Explanation:
MgF*2=2FMg
Brainliest for an answer!
2 As (s) + 6 NaOH (aq) → 2 Na3AsO3 (s) + 3 H2 (g)
If 34.0g of As react with excess NaOH at STP, what volume of H2 will be produced in liters?
If you can answer this question quickly, I will mark you brainliest, I'm stumped to be honest.
The volume of H₂ : = 15.2208 L
Further explanationGiven
Reaction
2 As (s) + 6 NaOH (aq) → 2 Na₃AsO₃ (s) + 3 H₂ (g)
34.0g of As
Required
The volume of H₂ at STP
Solution
mol As (Ar = 75 g/mol) :
= mass : Ar
= 34 g : 75 g/mol
= 0.453 mol
From the equation, mol ratio As : H₂ = 2 : 3, so mol H₂ :
=3/2 x mol As
=3/2 x 0.453
= 0.6795
At STP, 1 mol = 22.4 L, so :
= 0.6795 x 22.4 L
= 15.2208 L
The ____________________ two objects are from each other, the _____________ the force of gravity between them. fill in spaces
Answer:
Farther, lesser
Explanation:
The farther the two objects are from each other, the lesser the force of gravity between them.
The force of gravitational attraction between two bodies is inversely proportional to the distance between them.
This premised on the Newton's law of universal gravitation which states that "the gravitational force of attraction between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distances between them".
So, the farther the distance, the lesser the gravitational attraction and vice versa.
Which three elements are combined in lithium sulfate ?
Answer:
jsidndnxjxixdjdbsjsjdidnsjdjdidndjd
_______ store food or pigments ( I'm learning about cells)
A skateboard with a mass of 1.4 kg is accelerated with a force of 11.9 N.
Problem
If resisting forces are ignored, what is the acceleration of the skateboard?
A O 13.3 m/s2
BO 8.5 m/s2
CO 0.12 m/s2
D 16.66 m/s2
Submit Answer
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Heat Shield Rock 5. How did Heat Shield Rock get its name?
Answer:
Heat Shield Rock is a basketball-sized iron-nickel meteorite found on the Meridiani Planum plain of Mars by the Mars rover Opportunity in January 2005.
Heat Shield Rock
i am a silvery white metal used to make salt
What is the percent yield of this reaction if 22.o g of Mgl2 is produced by the reaction of 25.0 g of Mg with 25.0 g of l2?
% yield = 80.719
Further explanationGiven
22.0 g of Mgl₂
25.0 g of Mg
25.0 g of l₂
Required
The percent yield
Solution
Reaction
Mg + I₂⇒ MgI₂
mol Mg = 25 g : 24.305 g/mol = 1.029
mol I₂ = 25 g : 253.809 g/mol = 0.098
Limiting reactant = I₂
Excess reactant = Mg
mol MgI₂ based on I₂, so mol MgI₂ = 0.098
Mass MgI₂ (theoretical):
= mol x MW
= 0.098 x 278.114
= 27.255 g
% yield = (actual/theoretical) x 100%
% yield = (22 / 27.255) x 100%
% yield = 80.719
How many liters of water is necessary to make a 1.14 M solution with 5.10 mol KNO3?
Describe the changes to the coastline pictured above. Look particularly at North and South Monomy Island.
Where is the picture?
if you had a block square that weighed 5.00 grams what would be the length of each side
Answer:
[tex]l = 0.793[/tex] cm
Explanation:
Let us assume the density of block square [tex]10[/tex] g/cm³
As we know
Volume = [tex]\frac{Mass}{Density}[/tex]
Thus Volume of this block is equal to [tex]\frac{5}{10} = 0.5[/tex]
As we know volume of square block of side of length "l" is equal to [tex]l^3[/tex]
[tex]l^3 = 0.5[/tex]
[tex]l = 0.793[/tex] cm