Answer:
14.3 Litres
Explanation:
Standard temperature and pressure denotes that a gas has the following:
P = 1 atm
T = 273K
According to this question, the mass of CO2 is 28g.
Using mole = mass/molar mass
Molar mass of CO2 = 12 + 16(2)
= 12 + 32
= 44g/mol
Mole = 28/44
= 0.64mol
To calculate the volume of CO2 at STP, we use the general gas law equation as follows:
PV = nRT
R = Gas law constant = 0.0821 Latm/molK
V = nRT/P
V = 0.64 × 0.0821 × 273/ 1
V = 14.3/1
V = 14.3 Litres
What do LEGOs and DNA have in common?
Answer:
They are both building blocks
Explanation:
DNA builds up life while legos build things
Which figures are not significant? *
trailing zeros to the left of an invisible decimal point
leading zeros to the right of a decimal point
leading zeros to the left of a decimal point
all of the above
none of the above
Answer:
leading zeroes to the left of a decimal point. and trailing zeros to the left of an invisible decimal point.
Explanation:
All nonzero digits are significant figures. Example: 713 has three significant figures. 18,991 has five significant figures.Zeros located between two nonzero digits are significant figures. Example: 505 has three significant figures. 17,009 has five significant figures.Zeros at the ends of numbers are only significant if there is a decimal point in the number. Example: 502.00 has five significant figures (5,0,2,0,0). 5020 has three significant figures (5,0,2) 100,000 has one significant figure (1)Zeros that come before the first nonzero digit are not significant. Example: 0.0007 has one significant figure (7). 0.0970 has three significant figures (9,7,0)Which plant is considered an invasive species in Shenandoah National Park in Virginia?
es )
A)
Blackberries and raspberries are found blooming along open areas of the
park. These provide food for hungry bears.
B)
The tree-of-heaven is originally from China. It produces a chemical that
prevents other plants from growing around it.
The American chestnut tree was once the most common tree to see in the
park. All of the mature trees of this species are now gone.
D)
Poison ivy can cause red, itchy bumps on a hiker's skin when contact is
made with its leaves. This vine grows naturally from Canada south to
Florida
Ecol
Hint
Answer:
B) The tree-of-heaven is originally from China. It produces a chemical that prevents other plants from growing around it.
Explanation:
In ecology, a plant is said to be "INVASIVE" if it is FOREIGN or NON-NON-NATIVE to a particular region or area and also poses a great threat to the native species of that region. An invasive species, when introduced into a foreign habitat, heavily competes with the existing local species of that same habitat.
This is the case of the tree-of-heaven, which is originally from China. The tree produces a chemical that prevents other plants from growing around it. Note that this plant species is foreign to the Shenandoah National Park in Virginia as it originates from China. Likewise it harms the local or native species of the park by secreting a chemical that prevents other plants from growing around it. This characteristics portrays a plant that is INVASIVE.
how many moles are in 566 grams of CO2? Molar mass of CO2 = 44.0 g/mol
Answer:
Co2 grams to moles
How many grams CO2 in 1 mol? The answer is 44.0095. We assume you are converting between grams CO2 and mole. You can view more details on each measurement unit: molecular weight of CO2 or mol This compound is also known as Carbon Dioxide.
Explanation:
please tell me answers I am given you brainliest
Answer:
1 = one
2 = fluorine
3 = Bromine
4 = increase
5 = first increaseas and then decreases
hope it helps
The four balls in the diagram below are made of the same material and are solid.
Pair 1
Pair 2
Why is the force of gravity between the balls in Pair 2 greater than the force of gravity between the balls in Pair 12
PI
The balls in Pair 2 are closer together than the balls in Pair 1.
The balls in Pair 2 have a greater mass than the balls in Pair 1.
O The balls in Pair 1 have more rolling friction than the balls in Pair 2.
The balls in Pair 1 have more magnetic force than the balls in Pair 2.
Hidden
Ops
Answer:
The balls in Pair 2 have a greater mass than the balls in Pair 1.
Consider a star with a surface temperature of 12,000
K. According to the graph, the star's peak wavelength
is in the
A) ultraviolet range.
B) radio wave range.
C) visible light range.
D) infrared range.
Answer:
a
Explanation:
Answer:
A. ultraviolet range
Explanation:
Element worksheet please help show steps if you can
Answer:
yes
Explanation:
pp
Gametes combine in sexual reproduction that creates a fertilized egg that will turn into a ____________.
Group of answer choices
seed
sporophyte
gametophyte
spores
Answer:
i assume that it would be a gametophyte.
Explanation:
How would you calculate an object’s mechanical energy?
Please help me with this! It’s not timed so take your time!
Answer:
pretty sure they're called groups
How do particles differ after a chemical change?
Answer:
The chemical reaction produces a new substance with new and different physical and chemical properties. Matter is never destroyed or created in chemical reactions. The particles of one substance are rearranged to form a new substance. The same number of particles that exist before the reaction exist after the reaction.
The particles of the substance are rearranged after a chemical change.
The difference between a physical change and a chemical change is that in a chemical change, the particles of a substance are rearranged to form a new compound.
This regrouping of particles is really what yields the product. The product is always chemically different from the starting materials.
Hence, the particles of a substance are rearranged during a chemical change.
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what method would we use to measure how colour changes during a reaction???
Answer:
There are a number of ways that you could investigate the effect of changing the temperature on the rate of a reaction in Chemistry. ... This includes using apparatus safely, and monitoring chemical changes.
Explanation:
There are three main methods of measuring rate:
measuring the volume of gas given off by a reaction over time.
measuring the loss of mass of a reaction over time when a gas is produced.
Identify two sources of heat that melt rocks beneath Earth's surface.
Answer:
magma, melting
(SCIENCE) HURRY HELP!!
Anabolic steroids are especially dangerous for teenagers whose bones are still growing.
true or false
Answer:
True
Explanation:
Generally makes sense.
determine the number of molecules in 43.9 g of carbon tetrachloride
Answer: There are about 0.28 molecules in 43.9 g of carbon tetrachloride. If you are rounding up, it would be 0.3
Explanation:
Hey.... If I got a question in my exams of which metal does not react with hydrochloric acid and I write gold as the answer, will I get full marks on that questiona dn the whole exam paper in total????
Answer:
I think you would pretty much get the answer wrong.
You won´t get full credit. sorry for your wrong test answer, :(
Explanation:
The correct answer would be copper and mercury do NOT react with hydrochloric acid.
Sam ran a 2000-meter race. He started at 9:00 AM and finished at 9:15 AM. He started out fast but slowed down toward the end. Calculate Sam's average speed during the race.
Answer:
Sam's average speed = 2.22 m/s
Explanation:
The average speed refers to the speed with which a distance is covered within a particular time duration. The average speed of a moving object can be obtained by summing up all the varying speeds as the object moves from one point to another, within a particular time frame.
Sams average speed can be calculated using this formula:
Average speed = distance / time
Distance covered = 2000 meters
Time taken to cover the distance = 9:15 am - 9:00 am = 15 minutes = 15 X 60 seconds = 900 seconds
Sam's average speed = 2000meters / 900 secs = 2.22 m/second
Answer: tell me
Explanation:
i do not no
What is the main purpose of the excretory system?
Question 6 options:
To cause movement of the body
To respond to stimuli
To transport nutrients
To remove waste products
Answer:
To remove waste products
Explanation:
I think
Answer:
to remove waste products
What size volumetric flask would you use to create a 1.25 M solution using 29.75 g of MgCl2?
Answer:
250 ml
Explanation: I got it right on the lab.
The size of the volumetric flask that would you use to create a 1.25 M solution using 29.75 g of MgCl₂ is 250mL.
How do we calculate volume of the solution?
Volume (V) in liter of the solution will be calculated by using the molarity (M) formula as:
M = n/V, where
n is the moles of the solute and it will be calculated by using mass as:
n = W/M, where
W = given mass
M = molar mass
Moles of 29.75g of MgCl₂ = 29.75g / 95g/mol = 0.313 mol
Given that molarity of solution = 1.25M
On putting values on the equation of molarity we will get the value of volume as:
V = 0.313 / 1.25 = 0.2504 L = 250mL
For the preparation of 250 mL of MgCl₂ solution we required the volumetric flask of 250 mL.
Hence volumetric flask of 250mL is required.
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#SPJ2
The table below shows the main components of Earth's atmosphere. What is the solvent in air? What are the solutes?
Answer:
The correct answer is - nitrogen is solvent and other gases present in the air are solutes.
Explanation:
As it is given and we know that the earth's atmosphere is made up of various gases including nitrogen, oxygen, carbon dioxide, argon, and water vapor, however, the major part of the atmosphere is made up of nitrogen.
Air is a homogenous mixture of gases and most of the part of the air is, 78.08 percent, nitrogen makes it solvent and other gases mixed with nitrogen are solutes including carbon dioxide and oxygen.
describe how the particles in the pot transfer energy
Answer: When they do, they transfer some of their energy. The energy is transferred from particle to particle. It is sort of like a row of dominoes falling over. In this process, thermal energy moves through a substance. It can even move into other nearby substances. In Figure above, conduction occurs between particles of the metal in the pot. It also occurs between particles of the pot
Explanation:
A skateboarder traveling at 7.0 meters per second rolls to a stop at the top of a ramp in 3.0 seconds. What is the skateboarder's acceleration? acceleration=[acceleration]m/s2
Answer:
The skateboarder's acceleration is -2.33 m/s².
Explanation:
The acceleration of an object is a magnitude that indicates how the speed of the object changes in a unit of time. That is, acceleration is the change in speed in a unit of time.
Acceleration is calculated as the relationship between the variation or change in the speed of a mobile and the time used for said change:
[tex]acceleration=\frac{change in the speed}{time}=\frac{final speed - initial speed}{time}[/tex]
In this case:
final speed= 0 m/sinitial speed= 7 m/stime= 3 sReplacing:
[tex]acceleration=\frac{0 m/s - 7 m/s}{3 s}[/tex]
and solving you get:
acceleration= -2.33 m/s²
The skateboarder's acceleration is -2.33 m/s².
1. How are atoms held together? What is the attraction between?
Answer:
the atom is held together by the electrostatic attraction between the positively charged nucleus and the negatively charged electrons surrounding it, the stability within chemical bonds is also due to electrostatic attractions.
Explanation:
Answer:
Some type of bond (example: hydrogen bonds between water)
Polarity can also hold atoms together
hope this Helped!
What’s the answer????
Answer:
1. C
2. A
3. A
Explanation:
Glucose is a molecule that organisms can use to release energy, and that is made of nitrogen, lead, and palladium attoms (true false)
Answer:
true
Explanation:
The picture above is a diagram of what earth-sun-moon phenomena?
A.Earth-Sun-Moon
B.Solar Eclipse
C.Lunar Eclipse
D.Orbit
if you do't know plz dont answer
Answer:
lets just say he got pay back btw it's lunar eclipse babe
Explanation:
2NaHCO3 + 3CaCl2 → CaCO3 + 2NaCl + H2O + CO2
Which statement is true about the equation above?
There are 3 chlorines on the reactant side and 3 chlorines on the product side of this equation.
There are 3 chlorines on the reactant side and 3 chlorines on the product side of this equation.
There are 3 calciums on the reactant side and 2 calciums on the product side of this equation.
There are 3 calciums on the reactant side and 2 calciums on the product side of this equation.
There are the same number of oxygen atoms in the reactants and the products. There are the same number of oxygen atoms in the reactants and the products.
This equation does not follow the law of conservation of mass.
Answer:
There are the same number of oxygen atoms in the reactants and the products
Explanation:
However the equation is not balanced
3 Ca on one side and 1 on the other
What is the main point of the reading? Group of answer choices Many elements combine to make a few compounds. Hawaii is made up of only a few types of compounds A few elements combine to make many compounds. Elements cannot be combined except by artificial means.
Answer:
A few elements combine to make many compounds.
Explanation:
The heading of the reading is 'Few elements, many Compounds'. The reading has focused on the process involved in the formation of elements and compounds. In the Hawaiian Islands the elements are found in abundance. These elements combine together to form compounds. The mountains, greenery, rocks and living matter are made up of many elements and compounds. The elements present helps in forming various compounds.
If I use a plastic comb and run it "vigorously" through my hair, then hold it next to small torn pieces of tissue paper, what would happen?
If I use a plastic comb and run it "vigorously" through my hair, then hold it next to small torn pieces of tissue paper then paper will get attach to the comb.
What is static electricity?Static electricity is a kind of electricity which will observe when transfer of charged particles is observed from one object to another object.
If we use a plastic comb and run it vigorously through our hairs then static electricity is generated due to the transfer of electrons from the atoms present in the hairs towards the plastic comb as a result of which negative charge is bear by the comb and positive charge is bear by the hairs. Then when we hold this comb near a tissue paper then it produces induced charge and show attraction towards the tissue paper.
Hence, when we hold a combed plastic comb near tissue papers then paper will get attach to the comb.
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