Answer:
B. Stretching a rubber band.
Explanation:
How many moles is 118 grams of Argon
Answer:
[tex]\boxed {\boxed {\sf About \ 2.96 \ moles \ of \ Argon}}[/tex]
Explanation:
To convert from grams to moles we must use the molar mass, which is found on the Periodic Table.
Argon: 39.9 g/molUse the molar mass as a ratio.
[tex]\frac{39.9 \ g \ Ar}{1 \ mol \ Ar}[/tex]
Multiply by the given number of grams: 118
[tex]118 \ g \ Ar *\frac{39.9 \ g \ Ar}{1 \ mol \ Ar}[/tex]
Flip the fraction so the grams of argon will cancel each other out.
[tex]118 \ g\ Ar * \frac{1 \ mol \ Ar}{39.9 \ g \ Ar}[/tex]
[tex]118 * \frac{ 1 \ mol \ Ar}{39.9 \ g \ Ar}[/tex]
[tex]\frac {118 \ mol \ Ar }{ 39.9 }[/tex]
[tex]2.95739348 \ mol \ Ar[/tex]
The original measurement of grams had 3 significant figures, so our answer must have 3 sig figs.
For the number we calculated, that is the hundredth place. The 7 in the thousandth place tells us to round the 5 to a 6.
[tex]2.96 \ mol \ Ar[/tex]
There are about 2.96 moles of Argon in 118 grams.
FB and were to bond the difference in electronegativity would be
and we would expect the bond to be
ionic covalent, poler covalent)
ASAP quick
List the 5 characteristics of minerals
Answer:
Solid, Naturally Occurring, Inorganic, Fixed Composition, Crystal-like internal structure
Explanation:
Photosynthesis
+ carbon sunlight
dioxide
+
oxygen
sugar +
water +
Cellular
respiration
+ energy
Energy of vibrating particles is....
electrical energy
thermal energy
sound energy
mechanical energy
your answer would be sound energy
Explanation:
my brain
Which is an example of physical weathering?
limestone in rock dissolving when acid rain flows across it
bits of rock rusting when exposed to oxygen and water
wind blowing off bits of a rock over time
oxidation of certain metals in rock
answer: bits of rock rusting when exposed to oxygen and water
Explanation: i think because when it rains the water is left and freezes and night making the rock expand or start to Rust
What is the name of Br6F10 ?
Answer:
Bromine fluoride
What do tissues working together
form?
Organs
Organ systems
Answer:
tissues working together form organs.
The answer is organs.
Explanation:
cells form tissues, tissues form organs, and organs that fulfill related functions make up the organ system...hope this helps(:
Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients. H2(g)+P4(s)=4PH3(g)
Answer: 6H2+P4–>4PH3
Explanation:
define sedimentary, metamorphic, igneous
Answer:
these are all types of rocks
sedimentary are formed through the accumalation of different material from earths surface. Like the grand Canyon!
Metamorphic rocks are formed from heat, preasure, or a combination. Found mostly near tectonic plates meet.
Igneous are molten rock.
Explanation:
Sedimentary- a rock that has formed from sediment deposited by water or air
Metamorphic- a rock that has transformed by heat,pressure,or other natural causes
Igneous- a rock that has been solidified by lava or magma
What are the 2 basic parts of an atom?
Answer:
nucleus and electrons
Explanation:
nucleus contains protons and neutrons
how many valence electrons does hydrogen have
Answer:
Since hydrogen is the first element, its electron configuration is 1s1.
Explanation:
It has only one electron in its valence shell.
Valence electrons are the outermost electrons or electrons in the largest energy level. Hydrogen has only one electron, so that electron is a valence electron.
Answer:
One valence electron !!
Explanation:
Example of compound non polar covalent bond and polar covalent bond
Answer:
Explanation:
Nitrogen N2 has a non polar covalent bond.
Water H2O has polar covalent bonds between the H and O atoms.
Has 3 valence electrons and 4 energy levels ?
You are looking for an element in the fourth period and a transition metal. As most have about 3 valence electrons. Gallium and Scandium work perfectly.
Answer:
Gallium is the Answer.
Explanation:
What are land plants used for?
Answer:
Land plants are also known as Embryophytes. Embryophytes are complex multicellular eukaryotes with specialized reproductive organs. The name derives from their innovative characteristic of nurturing the young embryo sporophyte during the early stages of its multicellular development within the tissues of the parent gametophyte.
Explanation:
Answer:
there used for mountains , wait I'm just trynna get points ya feel me
Explanation:
Single displacement (replacement)
Explanation:
Single displacement (replacement) is kind of reaction in which 1 atom of reactants only change in product.
4NH3 + 502 -> 4NO + 6H20 How many grams of nitrogen monoxide (NO) will be produced from 2.50 g oxygen (02)?
gram of NO=5
2NO = 2N+O2
2×2.50=x
x=5
The mass of nitrogen monoxide produced from 2.5 grams of oxygen is 1.875 grams
4NH₃ + 50₂ → 4NO + 6H₂0
The limiting reagent is 0₂ because the least moles of this are used in the reaction.
Therefore, it will determine the amount of product formed.
From the chemical reaction above
10(16) g of 0₂ gives (4×14 + 4×16) g of NO
2.50 g of 0₂ will give ? of NO
cross multiply
mass of NO formed = 2.50 × 120 / 160
mass of NO formed = 300 / 160
mass of NO formed = 1.875 grams
learn more on mass here: https://brainly.com/question/14269180
Started: Feb 22 at 92
Quiz Instructions
Question 2
e
lon Chart
If the standard pressure in a car tire is 38 psi, what is the force exe
the tire if the area of the tire is 12 cm by 18 cm? Round your answ
pound.
Answer:
1272 pound
Explanation:
From the question given above, the following data were obtained:
Pressure (P) = 38 psi
Area (A) = 12 cm by 18 cm
Force (F) =?
Next, we shall determine the area. This can be obtained as follow:
Area (A) = 12 cm by 18 cm
A = 216 cm²
Next, we shall convert 216 cm² to square inch (in²). This can be obtained as follow:
1 cm² = 0.155 in²
Therefore,
216 cm² = 216 cm² × 0.155 in² / 1 cm
216 cm² = 33.48 in²
Finally, we shall determine the force exerted. This can be obtained as follow:
Pressure (P) = 38 psi = 38 lbf/in²
Area (A) = 33.48 in²
Force (F) =?
P = F/A
38 = F / 33.48
Cross multiply
F = 38 × 33.48
F = 1272 pound
Thus, the force exerted is 1272 pound
Which have a mass of 0 amu?
A. Protons
B. Neutrons
C. Electrons
D. Protons and neutrons
E. Protons and electrons
F. Neutrons and electrons
I give Brainliest!
Answer:
c
Explanation:
Answer:
C. electrons. They also have a charge of -1
Conduction does not work well in metals.
True or False
Question :
Conduction does not work well in metals. True or FalseAnswer:
False, because:
Thermal conduction is defined as the transport of energy due to random molecular motion across a temperature gradient. It is distinguished from energy transport by convection and molecular work in that it does not involve macroscopic flows or work-performing internal stresses.
Or in other words, Conduction is the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts.
If this helped, you're welcome! If you would, please make me brainliest.
- niaxfandoms (ig and yt)
Solution made up of a
Answer:
solute and solvent
Explanation:
Because solutes dissolves in solvent to form a solution
What is the primary difference between two different isotopes?
Answer:
Because different isotopes have different numbers of neutrons, they do not all weigh the same or have the same mass. Different isotopes of the same element have the same atomic number. They have the same number of protons. The atomic number is decided by the number of protons.
Hope this helps!!!!
Explanation:
is soil a producer, decomposer, or consumer
How can a chemical reaction be sped up?
By mixing the chemicals.
Answer:
A chemical reaction can be sped up by many factors. Add a catalyst (A substance that reduces activation energy, speeding up the reaction) Increase the concentration of reactants. Increase the concentration of catalysts.
I NEED HELP ASAP PLS
picture included^^^^^^ ^^
brainliest;) ^
Explanation:
20g of Na and 10g of Cl2 which is in excess?
The equation of the reaction is given as;
2 Na + Cl2 --> 2 NaCl
From the equation;
2 mol of Na reacts with 1 mol of Cl2
Converting the masses of reactants given to mol
Number of moles = Mass / Molar mass
Na;
Number of moles = 20 / 23 = 0.8696 mol
Cl2;
Number of moles = 10 / 71 = 0.1408 mol
In the chemical equation, the ratio was 2: 1 however with the masses, we can tell that Na is in by far excess.
0.8696 mol of Na would require 0.4348 of Cl2 (Present = 0.1408 mol)
This means;
Na - Excess Reactant
Cl2 - Limiting Reactant
Second part; How much NaCl would be produced?
The limiting reactant determines how much of the product is formed.
From the equation of the reactant;
1 mol of Cl2 produces 2 mol of NaCl
0.1408 mol of Cl2 would require x mol of NaCl
1 = 2
0.1408 = x
x = 0.2816 mol of NaCl
Converting to mass;
Mass = Molar Mass * Number of moles
Mass = 58.44 g/mol * 0.2816 mol
Mass = 16.46 g
30 POINTS PLEASE HELP (IF YOU GIVE WRONG ANSWER ILL REPORT U ) What type of galaxy is described as revolving around a single point and has spinning arms of stars which extend from the center? (3 points)
spiral
elliptical
irregular
barred spiral
Answer:
The type of galaxy that is described as revolving around a single point and has spinning arms of stars which extend from the center is;
Spiral
Explanation:
A spiral galaxy which is the most common type of galaxy is a class of Hubble sequence of galaxies which was described in the 1936 work The Realm of the Nebulae by Edwin Hubble
Spiral galaxies are therefore have a flat disk shape such that the stars, the dusts, and the gas that make up the galaxy cluster in several radially spreading spiral arms that come together in the galaxy center
Answer:
Spiral
Explanation:
If a five-cent coin is made of 25% copper and 75% Nickel, determine the mass of Nickel and Copper in the coin.
Answer:
3.75g of Ni and 1.25g of Cu
Explanation:
The five-cent coin of Unit States has a mass of 5.000g. To find the mass of each atom we have to multiply the total mass times the percentage of each atom (Nickel and Copper). That is:
Mass Nickel:
5.000g * 75% = 3.75g of Ni
Mass Copper:
5.000g * 25% = 1.25g of Cu
How many moles of bromine are needed
Answer:
8.0 moles
Explanation:
Convert 0.6330 mol of Na3PO4 to grams. Show the unit analysis by inserting the correct components into their unit- factor slots.
(see picture)
Answer:
No of moles = mass in gram / molar mass
Mass in gram = no of moles× molar mass
Mass in gram = 0.6330× 163.94
103.77 gram
Explanation:
What mass of CO2 would you need so that you had 2.5 moles of it?
A:44g
B: 88g
C. 110g
D: 132g