Answer: false
Explanation: I don’t know why but I just had this question and gussed false and I was right so false is therefore the right answer. Your welcome.
describe each of the three states of matter (solid, liquid, gas)
Explanation:
In a solid particles are firmly together and are stuck in a regular pattern
in a liquid particles still touch but arent in a fixed pattern
in a gas particles move quickly in all directions
please help there is a pic and marking brain list
Answer:
3
Explanation:
hello,
someone help me plz
Q. A small amount of Ferrous sulphate is heated in hard glass tube.
a) Write the balanced chemical reaction involved.
b) Name the type of reaction taking place.
Answer:
[tex]a)\ 2FeSO4 \xrightarrow{\text{Heat}} SO_3+SO_2+Fe_2O_3\\b)\ Decomposition\ Reaction[/tex]
Explanation:
Ferrous Sulphate[tex](FeSO4)[/tex] is generally found as Lime-Green Crystals. On heating, these crystals almost immediately turn white-yellow. They then, break down to produce an anhydrous mixture of Sulphur Trioxide [tex](SO_3)[/tex], Sulphur Dioxide [tex](SO_2)[/tex] as well as Ferric Oxide [tex](Fe_2O_3)[/tex].
We can hence, frame a skeletal equation of this reaction and try to balance it.
Hence,
[tex]FeSO4 \xrightarrow{\text{Heat}} SO_3+SO_2+Fe_2O_3[/tex]
Now,
a)In order to balance it through the 'Hit &Trial Method', we'll follow a series of steps:
1. First, lets compare the number of Fe (Iron) atoms on the RHS and LHS. We find that, the no. of Fe Atoms on the RHS is twice the number of Fe Atoms on the LHS. We hence, add a co-effecient 2 beside [tex]FeSO_4[/tex].
2. Now, Iron atoms, Sulphur Atoms and Oxygen atoms occur 2, 2, 8 respectively on both the sides:
Hence, As all the other elements as well as iron, balance, we've arrived upon our Balanced Equation :
[tex]2FeSO4 \xrightarrow{\text{Heat}} SO_3+SO_2+Fe_2O_3[/tex]
b) We know that, decomposition reactions are [generally] endothermic reactions in which Large Compounds decompose into smaller elements and compounds. Here, as Ferrous Sulphate decomposes into Sulphur Dioxide, Sulphur Trioxide and Ferric Oxide, the reaction that occurs here is Decomposition Reaction.
What gases are exchanged during respiration?
Answer:
Explanation:
there should be more showing than telling
Answer:
oxygen and carbon dioxide.
Explanation:
what is the molar mass of.
3 moles of iodine, 5 moles of gold, and 2.5 moles of potassium
Answer:
choices?
Explanation:
What volume is occupied by 2.33 miles of an ideal gas at 0.953 atm and 44°C
Answer:
6663.6
Explanation:
A piece of wood that measures 3 cm by 6 cm by 4 cm has a mass of 80 g. What is the density of the wood? If the density of water is 1 g/mL, would the wood float in water? Explain.
Answer: yes
Explanation:
Which two groups of the periodic table do not contain any non-metal?
The 17th and 18th i think.. If by non-metal you mean no metal I think Its the 17th and 18th
hope this could help a bit.
A student asks why the ashes from a fire have much lower mass than the wood that was burned. Which of the following is the correct answer to the student's question?
Answer:
It have lower mass because much of the ashes came from the burned wood. (ashes were like little parts of the wood). plus most of the fuel was turned in to fire (light and heat energy) so yeah ash is just the left over.
Explanation:
Sodium bicarbonate (NaHCO3), also known as baking soda, is used to relieve heartburn, sour stomach, or acid indigestion by neutralizing excess stomach acid. When used for this purpose, it is said to belong to the group of medicines called antacids.
How many atoms are found in two molecules of sodium bicarbonate?
Answer:
NaHCO3 = No. of atoms in one molecule is 1 sodium + 1 Hydrogen + 1 carbon + 3 oxygens = 6 atoms per molecule.
We double it for two molecules, so 12 Molecules!
Explanation:
Hope i helped, Brainliest would be appreciated!
Have a nice day!
-Aadi x
This is agree or disagree I need help ASAP!!
Answer:
disagree
sometimes they attract
Explanation:
Answer:
Explanation:
2. Agree
3. Agree
4. Agree
5. agree
6. disagree
If im wrong its because im tired lol
i need help i have a homework assignment to finish and this is the last question help please and thank u
Biomes are characterized by temperature, precipitation, and the plant and animal communities that live there.
True or false?
All changes in phase (solid-liquid-gas) are
Answer:
States of matter
Explanation:
Three states of matter
Ture or False: air has its components spread evenly, so it is considered a homogenous mixture.
Answer:
True.
Explanation:
The composition of a mixture is varied by altering the proportions of its constituents. True. Solutions are heterogeneous since the ratio of solute to solvent does not remain the same throughout the solution.
2.00g of Copper wire was added to 50.0 mL of a 0.050M solution of Silver Nitrate. The reaction
produced solid silver and aqueous copper II Nitrate. The silver precipitate was collected and
dried. It was determined that the mass of the silver precipitate was 0.24 g. Use this information
to determine the theoretical yield, limiting reactant, and percent yield.
Answer:
See explanation
Explanation:
Now, the equation of the reaction is;
Cu(s) + 2AgNO3(aq) --------> Cu(NO3)3 (aq) + 2Ag(s)
Number of moles of silver precipitate = 0.24/108 g/mol= 0.0022 moles
Number of moles of AgNO3 = 50/1000 * 0.050 = 0.0025 Moles
If 2 moles of AgNO3 yields 2 moles of Ag
Then 0.0025 moles of AgNO3 yields 0.0025 * 2/2 = 0.0025 moles of Ag
Number of moles of Cu = 2.00g/63.5 g/mol = 0.03 moles
If 1 mole of Cu yields 2 moles of Ag
0.03 moles of Cu yields 0.03 moles * 2/1 = 0.06 moles of Ag
Hence AgNO3 is the limiting reactant
Theoretical yield of Ag = 0.0025 moles of Ag * 108 = 0.27 g
Actual yield of Ag = 0.24 g
Percent yield = actual yield/theoretical yield * 100
Percent yield = 0.24/0.27 * 100
Percent yield = 88.8%
A lab requires 20.5g of KNO₃. How many moles of KNO₃ are being used in the lab. Your answer should include a correct numerical set up. What is the approximate percent by mass of the water in the hydrated salt? [Show all work.] *
Answer:
the answer is 0.2
Explanation:
we have a formula that mole= reacting mass/ molar Mass and the molar Mass of KNO3 is 101 so since mole is reacting mass/ molar Mass and our reacting mass is 20.5 then divided it by 101 it is equal to 0.2
Convert the following problems:
a 96 kg to g
b 15 cL to kL
c 188 dL to L
d 3600 m to km
e 234 K to °C
f 43 °C to °F
i would really appreciate the help on this, I'm kinda struggling
Answer:
a.) 96000 g
b.) 0.00015 kL
c.) 18.8 L
d.) 36 KM
e.) -39.15 C
f.) 109.4 F
Explanation:
To turn kg to g, multiply the value by 1000
To Turn CL to KL, divide the volume value by 10000
To turn dl to l, divide volume by 10
to turn m to km, multiply meter value by 0.001 or divide by 1000
To convert c to f, multiply the temperature in degrees Celsius by 2, and then add 30
i hope this helps : )
An experiment requires 0.38 M NH3(aq). The stockroom manager estimates that 15 L of the base is needed. What volume of 15 M NH3(aq) will be used to prepare this amount of 0.38 M base? Answer in units of mL.
Answer:
480 mL
Explanation:
15L of 0.38M of NH3(aq.) means that we require 15x0.38 moles of NH3.
this is to be provided by 15M x V.
Where V is volume in Liters.
These are equal
⇒15M x V = 15x 0.48
Hence, Volume required V = 0.48L =480mL
PLEASE HELP ME, I AM DESPERATE
Explanation:
for the first one go to the website mathaway and just put the equation in and you would press graph.
If the football indoors had a volume of 5.33 L at 21degrees celsuis, what is the volume of the football outside where the temp is 10C (temp must be in K) MUST SHOW WORK
Answer:
5.13 L
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 5.33 L
Initial temperature (T₁) = 21 °C
Final temperature (T₂) = 10 °C
Final volume (V₂) =?
Next, we shall convert celsius temperature to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
Initial temperature (T₁) = 21 °C
Initial temperature (T₁) = 21 °C + 273
Initial temperature (T₁) = 294 K
Final temperature (T₂) = 10 °C
Final temperature (T₂) = 10 °C + 273
Final temperature (T₂) = 283 K
Finally, we shall determine the final volume. This can be obtained as follow:
Initial volume (V₁) = 5.33 L
Initial temperature (T₁) = 294 K
Final temperature (T₂) = 283 K
Final volume (V₂) =?
V₁/T₁ = V₂/T₂
5.33 / 294 = V₂ / 283
Cross multiply
294 × V₂ = 5.33 × 283
294 × V₂ = 1508.39
Divide both side by 294
V₂ = 1508.39 / 294
V₂ = 5.13 L
Thus, the new volume of the football is 5.13 L
Carbon dioxide and oxygen are both ___ found in the air.
Answer:
gases
Explanation:
Answer:
the Carbondioxed and oxygen are both a gass found in the air
If 95 grams of Iron are needed to react with sulfur, how many grams of sulfur are involved in this reaction?
2 Fe + 3 S=Fe2S3
Answer:
82 g S
Explanation:
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 81.6 grams of sulfur are involved in this reaction.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
2 Fe + 3 S[tex]\rightarrow[/tex]Fe[tex]_2[/tex]S[tex]_3[/tex]
mass of iron = 95 grams
Molar mass of iron=55.8450 g/mol
number of moles of iron =Given mass÷ Molar mass of iron
number of moles of iron=95÷ 55.8
number of moles of iron=1.70 moles
The mole ratio between iron and sulfur is 2:3
moles of sulfur = (3/2) moles of iron
moles of sulfur = (3/2)×1.70
moles of sulfur=2.55 moles
Mass of sulfur= number of moles of sulfur× Molar mass of sulfur
=2.55× 32
=81.6g
Therefore, 81.6 grams of sulfur are involved in this reaction.
To know more about mole, here:
https://brainly.com/question/15209553
#SPJ2
People should be more concerned about the global water budget than the local water budget.
True
Or false
You and a friend are swimming at your grandparent's house one toasty
summer afternoon. You have music playing through the Bluetooth speaker
on the pool deck, but every time you go underwater, you can hear the
noise, but you cannot understand the words of the song. What would
explain this phenomenon? *
Sound waves travel faster in a gas than they do in a liquid, which is why you cannot
understand the words,
Sound waves travel faster in a liquid than a gas, our ears are just not designed to
translate the faster moving waves,
Sound waves cannot travel at all in a liquid, which is why you cannot understand the
words and it's a miracle you can even hear the music at all,
Sound waves travel at the same speed regardless of the medium; your grandfather is
turning the music on and off when you go underwater and the noise you hear is the
song stuck in your head,
Answer:
Sound waves travel faster in a liquid than a gas, our ears are just not designed to translate the faster moving waves.
Explanation:
Sound waves are mechanical waves which travel through vibrating the medium (the "stuff") they're traveling through. This means they actually move faster through materials that are more dense, and will move more quickly through liquid than gas, and a solid than a liquid. However, our ears are adapted to "translating" sound waves in air rather than water, so we don't understand the music well when the waves move through the water.
A similar idea explains why our vision is blurry underwater; light waves travel at a different speed (slower, not faster!) in water and our eyes perceive this change in speed as blurriness.
show the path to the formation of sodium calcium and aluminum bases please help me
Answer:
i hope this helps :)
Explanation:
please mark brainlest
Answer:
dunno
Step-by-step explanations:
Describe the motion of the water molecules as the vapor pressure increases?
Answer: As for vapor pressure being higher at higher temperatures, when the temperature of a liquid is raised, the added energy in the liquid gives the molecules more energy and they have greater ability to escape the liquid phase and go into the gaseous phase.
Explanation:
The motion of the water molecules as the vapor pressure increases is:
The water molecules have greater energyAccording to the movement of the water molecules in a pressurized environment where the vapor and the temperature are increased, there is an increased ability to change from liquid to gas.
As a result of this, the water molecules has greater energy as they are subjected to increased levels of temperature and vapor pressure which makes them have more energy and to be more unstable.
Read more here:
https://brainly.com/question/15171390
Indicate which aqueous solution has the highest boiling point elevation. (Kb for water = 0.512 °C/m)
Answer:
carbon tetrachloride
Explanation:
Boiling point elevation of a liquid or a compound is defined as the boiling point of a liquid that is that will be higher when some other other compound is added. It means that the solution has a higher boiling point than the solvent. When a non volatile solute is added to the pure solvent like water, it results in the highest boiling point elevation.
Carbon tetrachloride, Kb = 5.03°C/m shows highest boiling point elevation when it is used to make a 0.10 m non - electrolyte solution.
A mixture of gases in a container has a pressure of 1275.5 mm Hg. If the pressure of CO2 gas is 335.3 mm Hg and the pressure of N2 gas is 418.0 mm Hg, what is the pressure of O2 gas.
how much atomic mass does Osmium have
Answer:
190.23g
Explanation:
Osmium is element number 76 on the periodic table, with the atomic symbol "Os." The atomic mass of any element is listed underneath the atomic symbol. Osmium has an atomic mass of 190.23 grams.