Answer:
anything that has weight and occupies space
Explanation:
Matter is anything, such as a solid, liquid or gas, that has weight (mass) and occupies space.
For anything to occupy space, it must-have volume.
Why do metal boats float?
Answer:
I hope this will help you
Explanation:
The air that is inside a ship is much less dense than water. That's what keeps it floating! The average density of the total volume of the ship and everything inside of it (including the air) must be less than the same volume of water.
Please make me brilliant
Hey. Can someone, please help me with the following questions:
Satellites
Satellites ___________the earth.
You can see _____________ _______________ without a telescope.
An example of a man made satellite is the _____________ _____________ _____________.
The only natural satellite of the earth is the __________.
Choose from: moon, orbit, natural satellites, international space station
Planets
There are ________ planets you can see with the __________ __________.
The five planets are, _________, ___________, ___________, ___________, ___________.
The planets are part of the ___________ ___________.
Light from Saturn takes around ___________ hours to reach earth.
Choose from: 1,5, naked eye, solar system, Mercury, Venus, Mars, Jupiter, Saturn
Comets and Meteors
A _________ is a spectacular sight in the _________ sky.
They are _______ to see and could be described as giant ___________ that orbit the _______.
__________ are bits of dust and _________ that _______ up as they move through the earth’s ____________. A meteor that makes it to earth is called a ______________.
Galaxies
1. What are most of the dots of light that we see in the sky?
2. What is the name of our home galaxy?
3. What is the name of our nearest star?
4. How long does it take the light from the sun to reach the earth?
5. Can you say what some of the other dots of light in the night sky might be?
6. How many stars might there be in one galaxy?
7. What is the name of our nearest neighbor galaxy?
8. State how long it takes for the light from our neighbor galaxy to reach the earth
For the reaction between aqueous silver nitrate and aqueous sodium chloride, write each of the following. The products of the reaction are aqueous sodium nitrate and solid silver chloride.
Complete equation
Complete ionic equation
Net ionic equation
Answer:
A balanced ionic equation shows the reacting ions in a chemical reaction. These equations can be used to represent what happens in precipitation reactions or displacement reactions.
Precipitation reactions
In a typical precipitation reaction, two soluble reactants form an insoluble product and a soluble product.
For example, silver nitrate solution reacts with sodium chloride solution. Insoluble solid silver chloride and sodium nitrate solution form:
AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)
The Na+ ions and NO3- ions remain separate in the sodium nitrate solution and do not form a precipitate. Ions that remain essentially unchanged during a reaction are called spectator ions.This means these can be ignored when writing the ionic equation. Only how the solid silver chloride forms is needed to be shown:
Ag+(aq) + Cl-(aq) → AgCl(s)
In a balanced ionic equation:
the number of positive and negative charges is the same
the numbers of atoms of each element on the left and right are the same
Displacement reactions
Displacement reactions take place when a reactive element displaces a less reactive element from one of its compounds.
A common type of displacement reaction takes place when a reactive metal reacts with the salt of a less reactive metal. For example, copper reacts with silver nitrate solution to produce silver and copper(II) nitrate solution:
2AgNO3(aq) + Cu(s) → 2Ag(s) + Cu(NO3)2(aq)
In this reaction, the NO3- ions remain in the solution and do not react - they are the spectator ions in this reaction. So, they can be removed from the ionic equation:
2Ag+(aq) + Cu(s) → 2Ag(s) + Cu2+(aq)
Question
Explain why this ionic equation is balanced:
Ba2+(aq) + SO42-(aq) → BaSO4(s)
Hide answer
There are the same numbers of atoms of each element on both sides of the equation. The total charge on both sides is also the same (zero).
Question
Balance this ionic equation, which represents the formation of a silver carbonate precipitate:
Ag+(aq) + CO32-(aq) → Ag2CO3(s)
Hide answer
2Ag+(aq) + CO32-(aq) → Ag2CO3(s)
Question
Balance this ionic equation, which represents the displacement of iodine from iodide ions by chlorine:
Cl2(aq) + I-(aq) → I2(aq) + Cl-(aq)
Hide answer
Cl2(aq) + 2I-(aq) → I2(aq) + 2Cl-(aq
Explanation:
this will help, I used this for my work x
AgNO₃ (aq) + NaCl (aq) → AgCl (s) + NaNO₃(aq) is the complete chemical equation taking place between the 2 reactants.
Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
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what is a salient factor?
Answer:
technology is a silent factor
Explanation:
learned about it in computer class.
K(s)+H2SO4(aq)
——>_____+______
K2SO4 + H2
Reason :Potassium is highly reactive
Answer:
K2SO4 + H2 this is the reaction.
Calculate the percent composition of oxygen in silicon dioxide.
Answer:
then it is 5
Explanation:
because i said it is
Someone help with this question
Answer:
the answer is D the dominant over powers the resecive traits
What is the pH of a 2.0 × 10-4 M HCl solution?
Answer:
pH = 3.69
Explanation:
HCl is a strong acid. It will disscociates completely into dissoluted ions such that,
[tex][H^+]=2\times 10^{-4}\ M[/tex]
The formula for pH is given by :
[tex]pH=-log[H^+]\\\\pH=-log(2\times 10^{-4})\\\\pH=3.69[/tex]
So, the pH of the solution is 3.69.
The answer to your question is 4.
Describe a time in the group discussion when you referred to the notes you took, the graphic organizer you filled out, and your position paper.
Answer:
To back up any statements I make.
To refute any errors presented.
Explanation:
During a group discussion, you look at your notes to point out an error or when you want to flesh out a point you made.
What is a group discussion?The term group discussion has to do with learners talking about a topic in a manner ion which each learner takes a turn to explain a portion of the topic.
During a group discussion, you look at your notes to point out an error or when you want to flesh out a point you made.
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What is the molar mass of the following compound: C1H3P2
Which element would you predict to have the highest first ionization energy? Why?
a) neon or carbon
b) fluorine or francium
c) beryllium or strontium
d) iodine or fluorine
Which of these forces does not act over a distance?
A. Friction
B. Electric
C. Magnetic
D. Gravitational
the symbol between two reactants in a chemical equation?
Select the statements that are true about electronegativity between elements,
and their type of bond.
A. If the difference is over 1.7, an ionic bond will form.
B. If the difference in electronegativity is from 0.6 to 1.7, the bond
will be nonpolar and covalent.
C. If the difference in electronegativity is 2 to 2.5, the bond will be
nonpolar covalent.
Answer:
a
Explanation:
if the difference is over 1.7, an ionic bond will form
How many moles of I2 are in 8.23 moles of NaI ?
Answer: 4.12
Explanation:
we know that the given mol is 8.23 mol and they are 2NaI and I2 so we will write the equation like this.
8.23mol NaI x 1mol of I2 ÷ 2molNaI = 4.115≅ 4.12 mol of I2
we placed NaI at the bottom to cancel out with the 8.23 mol of NaI
A baker has two identical cakes except that one cake is hot, and the other cake is room temperature. He places both cakes on an ice-cold
plate. What happens? (Mark the one best answer.)
Both cakes transfer energy to the plate.
The plate transfers energy to the room temperature cake.
Neither cake transfers energy to the plate
Only the hot cake transfers energy to the plate.
Answer:
the plate gets warmer and the cake gets colder
Explanation:
my brain
Please help! Find the distance to each destination in AU. Use the correct conversion factor.
Explanation:
The question involves converting from one unit (Kilometres) to another unit (Astronomical unit)
The relationship between both units is given as;
1 Km = 6.68459e-9 Au
Kulper belt
6.5 billion km = 6.5e9 Km
1 Km = 6.68459e-9 Au
6.5e9 Km = x
Solving for x;
x = 43.45 Au
Alpha Centauri
44 trillion km = 4.4e13
1 Km = 6.68459e-9 Au
4.4e13 km = x
Solving for x;
x = 294121.83 Au
3. What tool do we use to measure force?
Answer:
A force meter
Does liquid detergent conduct electricity?
Answer:
Yes, it is a good conductor of electricity.
Explanation:
They allow electric particles to pass through them (the bases).
(Hope this made sense)
how would I solve this problem?
Answer:
D
Explanation:
The goal in this set up is to make sure all units cancel each other.
Since we need to go from grams to atoms, our final unit should be atoms.
Using method of elimination, let's see why other options are wrong.
A - Although 'g' is cancelled out, we are left with moles^2 / atoms
B - Although 'g' is cancelled out, we are left with moles^2 / atoms
C - Although 'mol' is cancelled out, we are left with g^2 / atoms
Please help me find the final answer
Answer:
5. The mass of Na₂CO₃, that will produce 5 g of CO₂ is approximately 12.04 grams of Na₂CO₃
6. The mass of nitrogen gas (N₂) that will react completely with 150 g of hydrogen (H₂) in the production of NH₃ is 693.[tex]\overline{3168}[/tex] grams of N₂
Explanation:
5. The given equation for the formation of carbon dioxide (CO₂) from sodium bicarbonate (Na₂CO₃) is presented as follows;
(Na₂CO₃) + 2HCl → 2NaCl + CO₂ + H₂O
One mole (105.99 g) of Na₂CO₃ produces 1 mole (44.01 g) of CO₂
The mass, 'x' g of Na₂CO₃, that will produce 5 g of CO₂ is given by the law of definite proportions as follows;
[tex]\dfrac{x \ g}{105.99 \ g} = \dfrac{5 \ g}{44.01 \ g}[/tex]
[tex]\therefore {x \ g} = \dfrac{5 \ g}{44.01 \ g} \times 105.99 \ g \approx 12.04 \ g[/tex]
The mass of Na₂CO₃, that will produce 5 g of CO₂, x ≈ 12.04 g
6. The chemical equation for the reaction is presented as follows;
N₂ + 3H₂ → 2NH₃
Therefore, one mole (28.01 g) of nitrogen gas, (N₂), reacts with three moles (3 × 2.02 g) of hydrogen gas (H₂) to produce 2 moles of ammonia (NH₃)
The mass 'x' grams of nitrogen gas (N₂) that will react completely with150 g of hydrogen (H₂) in the production of NH₃ is given as follows;
[tex]\dfrac{x \ g}{28 .01 \ g} = \dfrac{150 \ g}{3 \times 2.02 \ g} = \dfrac{150 \ g}{6.06 \ g}[/tex]
[tex]\therefore \ x \ g= \dfrac{150 \ g}{6.06 \ g} \times 28.01 \ g = 693.\overline {3168} \ g[/tex]
The mass of nitrogen gas (N₂) that will react completely with 150 g of hydrogen (H₂) in the production of NH₃, x = 693.[tex]\overline{3168}[/tex] grams
PLEASE HELP ME.!
This illustrates which stage of meiosis?
A) Anaphase II
B) Metaphase II
C) Prophase II
D) Telophase II
Answer:
Anaphase II
Explanation:
3. Which of the following do all living organisms have in common? A. Cells held up by cell walls B. The method to get water and food into their cells C. Cells are made from pre-existing cells D. Special cells that can do many different things
Calculate the number of moles of gas that occupy a 16L container at a pressure of 3 atm and a temperature of 48oC
Answer:
1.81
Explanation:
3*16=n(0.0821)(48+273)
each side of a square is 8 by 10 metre find the area of the square
Answer and Explanation:
I believe the answer is 8
When 10 grams of water completely evaporate into water vapor, the volume of the water vapor is greater than the volume of the original liquid water, but the mass remains the same. Why does the mass stay the same? Which answer is correct?
A
The temperature of the liquid water and water vapor is the same.
The temperature of the liquid water and water vapor is the same.
B
The density of the liquid water is the same as the density of the water vapor.
The density of the liquid water is the same as the density of the water vapor.
C
The number of atoms in the water vapor is equal to the number of atoms in the liquid water.
The number of atoms in the water vapor is equal to the number of atoms in the liquid water.
D
The distance between the water molecules is the same in the liquid and the vapor.
The distance between the water molecules is the same in the liquid and the vapor.
Answer: I think the answer is B or C, its kind of hard.
As the number of atoms in the water vapor is equal to the number of atoms in the liquid water. Therefore, the mass of the water remains the same.
What is evaporation?Evaporation is a process that usually happens on the surface of water or liquid and it involves the conversion of the liquid phase into the gaseous phase. This process involves a change in the state of matter of water or liquids.
When the water is completely evaporated into water vapor the density of the water vapor is less than the density of the liquid water as the vapors occupy a large volume in comparison to liquid water.
But the number of atoms in the water vapor is the same as the number of atoms in the liquid water. The mass of the water is due to the mass of the atoms.
Therefore, the mass of the water remains the same during the phase transition from liquid water to water vapors. Therefore, option (C) is correct.
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What are the
invisible lines
revealed by the
Iron fillings
surrounding a
magnet called?
Answer:
At each end of a magnet is a pole. These lines of flux (called a vector field) can not be seen by the naked eye, but they can be seen visually by using iron fillings sprinkled onto a sheet of paper or by using a small compass to trace them out.
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Use the element tile below to calculate the molar mass of He2 (helium gas).
2 g/mol
16.012 g/mol
8.006 g/mol
4.003 g/mol
Answer: 4.003 g/mol
Explanation:
So basically Molar mass is the atomic mass of an element and the atomic mass of Helium is 4.0026 or 4.003 g/mol
What’s is CO written?
Answer:
CO is a chemical formula that contains one carbon atom (C) and one atom of oxygen (O). Altogether, CO translates to "carbon monoxide."
Explanation: Why monoxide and not dioxide? Well, the prefix mono means "one," and di means "two." Since there is only one oxygen atom (-oxide), then it must be monoxide! Voila!!
How many kilograms of water must be added to 6.07 grams of oxalic acid (H2C2O4) to make a 0.025 m solution?