Answer:
1.2 mol
Explanation:
26.8L x 1mol/22.4L = 1.2 mol
How many mm Hg is 9 atms?
6840.00 mmHg
(Please mark me brainliest! thank you in advance!!)
Cell is to a tissue as brick is to _______.
Cement
Clay
Bricklayer
wall
Answer:
bricklayer
Explanation:
is the correct answer
What is the volume of 80 grams of gold?
Answer:
Volume of 80 grams of Gold
centimeter³ 4.14 milliliter 4.14
foot³ 0 oil barrel 2.6 × 10-5
Imperial gallon 0 US cup 0.02
inch³ 0.25 US fluid ounce 0.14
liter 0 US gallon 0
meter³ 4.14 × 10-6 US pint 0.01
metric cup 0.02 US quart 0
metric tablespoon 0.28 US tablespoon 0.28
metric teaspoon 0.83 US teaspoon 0.84
hey guys, i found this marble outside and covered in grease. so i took it in to wash it. can you please tell me what it is made of...plz
Answer:
I can't see the marble so I don't know
how many atoms of argon gas are in 137 ml container at the pressure in the container is 8.80 X 10^5 mmhg and the temperature to 794 K
Answer:
#Ar atoms = 1.47 x 10²²
Explanation:
PV = nRT => n = PV/RT
P = 8.80 X 10⁵ mmHg = 8.80 X 10⁵ mmHg/760mmHg·atm⁻¹ = 11.58atm
V = 137ml = 0.137 Liter
n = ? moles Ar = ? moles Ar x 6.02 x 10²³ Atoms Ar/mole Ar
R = 0.08206 L·atm/mol·K
T = 794K
PV = nRT => n = PV/RT = 11.58atm·0.137L / 0.08206L·atm/mol·K·794K
=> n = 0.0243mole Ar = 0.0244mole Ar x 6.02 x 10²³ atoms Ar/mole Ar
= 1.47 x 10²² atoms Ar
HELP ASAP!!!
can someone help be determine the formulas for reactants and products as well as balance the equation, and what type of reaction is presented!!!!
I will make you the brain list!!!
Answer: owa owa
Explanation: owa owa owa owa
I
Solid iron(III) oxide is produced when hot iron filings are exposed to pure
oxygen gas.
What would happen if your DNA were missing a piece of a gene?
Answer:
Genetic information is lost, so then it would basically be some form of a small mutation
Which of the following is NOT true about the role tectonic forces play in the rock cycle?
1. When plates pull apart, rocks melt, and magma forms igneous rocks.
2. When plates crash together, rocks are buried and form metamorphic rocks.
3. When plates slide over & under each other, the heat & pressure form igneous rocks.
4. When rocks push upward & form mountains, the erosion of the mountains can produce sediment.
Answer:
i believe it is number #3
Explanation:
hope this helps
If a scale floated by and an astronaut stood on it, what would the scale say?
1.0kg
2.1/6 normal weight
3.9.8 m/s2
4.1/6 normal mass
How many moles are in 12.56 grams of CH4?
Answer:
About 0.783
Explanation:
Answer:
0.7830 mol
Explanation:
Just divide by the molar mass, which is 16.04 g/mol. That will take away grams so youre left with moles and your answer will be .783042. Using significant figures (4) so it will be 0.7830.
newtons forst law of motion is also known as___?
Answer:
law of inertia
Explanation:
If 1.0 mole of C8H18 are available to completely react
with enough O2, how many moles of H20 can be produced?
Answer: 1 mol C8H18 produces 9 mol H2O
Explanation: reaction : C8H18 + 12.5 O2 ⇒ 8 CO2 + 9 H2O
What is a chemical equation, and
how do scientists use these
equations to represent chemical
reactions?
Answer:
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
In mathematic equations we use an equal sign (=) for example 2 + 2 = 4, but in scientific chemical equations, we use an arrow (→), for example C + O2→ CO2. To the left of the arrow, we have the 'before' situation. This side represents the substances we have beforethe reaction takes place. They are called the reactants.
What is the mass in grams of 5.90 moles of aluminum. AI?
Answer:
159.3 grams Al
Explanation:
1 Mol of Al = 27 grams, so:
5.9 Mol Al (27g/1mol) = 159.3 grams Al
The Mol gets canceled out, leaving the unit of grams.
Use the words Mercury, Venus, Earth or Mars to fill in the blanks
Answer:
Earth is the only planet with plate tectonics
Mars is the most heavily cratered planet
Mercury is the only planet that has virtually no atmosphere
Mars has an atmosphere that is about 1% as dense as Earth's
Venus has an extremely dense atmosphere
Venus rotates in the opposite direction of the other planets
Venus is the most volcanically active planet
and Earth have sedimentary rock formations
Earth has a strong magnetic field
Mars had oceans in the past :3
Explanation:
:3
Which hand is negatively charged? Ο Α. OB. Oc. OD.
Answer:
it would be OA that is negatively charged
someone help ,, I'll give brainliest lol .
Answer:
D.
Explanation:
Hopefully this helps
Answer:
A
Explanation:
I think the correct answer is A. Online it says that oxidation can be defined in terms of the adding or removing oxygen to a compound/Oxidation is the gain of oxygen.
can someone help me with these?
Answer: 6. The pressure inside the baloon will be 6.8 atm
7. The final volume is 21.5L at tempearture of 388 K.
Explanation:
Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.
[tex]P\propto \frac{1}{V}[/tex] (At constant temperature and number of moles)
[tex]P_1V_1=P_2V_2[/tex]
where,
[tex]P_1[/tex] = initial pressure of gas = 3.5 atm
= final pressure of gas = ?
= initial volume of gas = 32 L
[tex]V_2[/tex] = final volume of gas = 19.3 L
[tex]3.5\times 32=P_2\times 19.3[/tex]
[tex]P_2=5.8atm[/tex]
Therefore, the pressure inside the baloon will be 5.8 atm
7. To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.
Mathematically,
[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]
where,
[tex]V_1\text{ and }T_1[/tex] are the initial volume and temperature of the gas.
[tex]V_2\text{ and }T_2[/tex] are the final volume and temperature of the gas.
We are given:
[tex]V_1=13L\\T_1=235K\\V_2=?\\T_2=388K[/tex]
Putting values in above equation, we get:
[tex]\frac{13L}{235K}=\frac{V_2}{388K}\\\\V_2=21.5L[/tex]
Thus it will occupy 21.5L at tempearture of 388 K.
2H₂ +0 a 2H₂O
Mole ratio of water to oxygen
Answer: 2:1
The ratio of hydrogen atoms to oxygen atoms used to make water molecules is always 2:1, no matter how many water molecules are being made.
Explanation:
Answer: GoodMorning: )✨2:1
The ratio of hydrogen atoms to oxygen atoms used to make water molecules is always 2:1, no matter how many water molecules are being made.
Have AN Amazing Day <3
The particles of a liquid are able to move around each other. What property of a liquid does this behavior create?
Answer:
Behaviour is in the form of surface tension.
Explanation:
The particles of the liquid are quite close to each other and move with the random movement around the containers. These particles tend to move rapidly in all directions due to the shorter distances between particles. The property of the liquids to flow is their viscosity. Described as the quality of the liquid to flow. They have no fixed shape, as they are made by tiny vibrating particles that are held together by intermolecular bonds. liquids don't disperse like the gases they have surface tension.I am a celestial body that does not produce light. I orbit a planet
What caused the deer population to grow early on?
A.) An abnormally cold winter caused offspring to die.
B.) A drought caused there to be less food and water available to the deer.
C.)The number of births was equal to the number of deaths in the deer population.
D.) The deer had a better food source so they had 2-3 fawns per year instead of 1 fawn
per year.
Answer:
i think it is C but not 100% sure.
Explanation:
Answer:
D) The deer had a better food source so they had 2-3 fawns per year instead of 1 fawn per year.
The other options show that the populations actually decreased, due to cold temperatures and droughts.
Let me know if this helps!
Identifying Variables in the Effect of Type of Material on
Absorption Experiment
Answer the questions using the drop-down menus.
Which is the independent variable in this experiment?
Which is the dependent variable in this experiment?
Which is a controlled variable in this experiment?
In Absorption Experiment,
Water location is the independent variable in this experiment.
Room Temperature in the material is dependent variable in this experiment.
Type of a material is a controlled variable in this experiment.
What is Absorption Experiment ?Absorption experiment is nothing but the experiment of absorption of water in a material (sponge).
Experiment requires vessel, water and sponge.
Processor - take a vessel, pour water into it and dip sponge. take out the sponge. After taking of out sponge, water appears to be decreased from the vessel and sponge gets heavier. When we squeeze the the sponge, water drops down. It is because of water is absorbed by the spouge.
There are number of pores in the sponge, which absorbs the water.
Water location is the independent variable.
In this experiment Room Temperature is dependent variable in this experiment rate of absorption increases with increase in the temperature. decrease in the temperature cause to solidify the water. Type of a material is a controlled variable, we can change type of the material.
To know more about variables :
brainly.com/question/14289293
#SPJ7.
What are substances that cannot be broken down into simpler substances?
a. elements
b.compounds
c. molecules
d.protons
Answer:
Elements
Explanation:
Elements cannot be broken down into a simpler substance
Name two things that affect the rate of weathering and why this happens ASAP
Answer:
Rain and temperature.
Explanation:
These cause geological landforms to erode/weather.
Rain is water that slowly chips away land-forms.
Which element was first discovered in space before it was discovered on Earth?
nitrogen
helium
carbon
hydrogen
Answer:
carbon
Explanation:
Answer:
carbon was discovered in space before on earth
Given the following equation:
8 Fe + S8 ---> 8 FeS
What mass of iron is needed to react with 106.0 grams of sulfur?
Answer27.9 gFeS
Explanation:
Note: This is for 16.0 Grams of Sulfer
Which of the following is an example of a parasite?
a. A flea that bites an animal and sucks its blood to survive.
b. An orchid flower that sits on a tree branch
c. The bacteria that live in human intestines and help humans digest things.
d. An Egyptian plover that cleans a crocodile's teeth.
hmm helpo?
Answer:
a sorry if im wrong
Explanation:
The density of hexane is 0.660 g/mL. What is the volume of a 57g sample of hexane?