Answer:
584.2 g
Explanation:
Hello there!
In this case, since we know the 20% of the atoms correspond to sodium, we can compute the total atoms as shown below:
[tex]\frac{1.204 x10^{24}}{0.2}=6.02x10^{24}atoms[/tex]
Which are also equal to 1 mol and the Avogadro's number of sodium chloride with a molar mass of 58.44 g/mol; thus, the grams of salt turn out to be:
[tex]6.02x10^{24}atoms*\frac{1mol}{6.022x10^{23}atoms} *\frac{58.44g}{1mol}\\\\=584.2g[/tex]
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what is a reservoir?
Answer:
a storage space for fluids
Explanation:
Answer:
an area where large amounts of water are stored
Explanation:
31. What are the major groups of microrganisms?
32. Describe the characteristics of coke?
33. Give two example to show that plastics are non – corrosive in nature?
34. Define acid rain.
35. What is metamorphosis?
38. Define cataract.
Answer:
31.Microbial
32.Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of air—a destructive distillation process. It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern.
33.examples to show that plastics are non corrosive in nature: Iron nails get rusted when exposed to moisture and air but plastic do not react with water and air. Plastic does not react with strong chemicals. Hence,cleansing chemicals are stored in plastic bottles and not in metal containers.
34.rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm, typically to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulfur and nitrogen oxides, which combine with atmospheric water to form acids.
35.in an insect or amphibian) the process of transformation from an immature form to an adult form in two or more distinct stages.
38.a medical condition in which the lens of the eye becomes progressively opaque, resulting in blurred vision.
Explanation:
Hope it helps!
Solve whoever gets it right first gets brainlest!
Plants do not grow well when the soil is either too acidic or too basic. How do you solve these problems?
Explain how to use the displacement method to find the volume of an irregularly shaped object.
Answer:
Subtract the volume of the water alone from the volume of the water plus the object. For instance, if "b" was 50 milliliters and "a" was 25 milliliters, the volume of the irregularly shaped object would be 25 milliliters.
Explanation:
Hope it helps
Which of the following mole ratios is not correct in the reaction below:
N2 + 3 H2 --> 2 NH3
C
mol H2 / 1 mol NH3 3
mol H2 / 1 mol N2 3
mol N2 / 2 mol NH3 1
mol NH3 / 3 mol H2 2
Help I only have 15 minutes left
Answer:
3 mol H2 / 1 mol NH3
Explanation:
Mole ratio depicts or shows the relationship between the number of moles of two substances in a chemical reaction. The following chemical equation is given:
N2 + 3H2 → 2NH3
According to the above chemical equation;
- 1 mole of N2 reacts
- 3 moles of H2 reacts
- 2 moles of NH3 is produced
Hence, this means that according to the options provided in this question, the incorrect one is 3 mol H2 / 1 mol NH3 because 2 moles rather than 1 mol of NH3 is involved.
Solve this problems using the equation: C = λ x ν........ A microwave oven emits radiation at a wavelength of 5.00 x 10e-5 m. What is the frequency of this radiation?
Answer:
c = λ x ν
v =c/λ=(3*10e8)/(5.00 x 10e-5)=6000000000000
f = v/λ =6000000000000/5.00 x 10e-5=120000000
Explanation:
Changes of state is an example of a chemical change.
CHANGES
OF STATE
True
False
Cl2 + 2KBr -> Br2 + 2KCI
How many grams of Br2 can be produced from 356 g of KBr?
A. 2.99 g Br2
B. 1.50 g Br2
C. 9.10 g Br2
D. 239 g Br2
Answer: D. 239 g of [tex]Br_2[/tex]
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} KBr=\frac{356g}{119g/mol}=2.99moles[/tex]
The balanced chemical reaction is:
[tex]Cl_2+2KBr\rightarrow Br_2+2KCl[/tex]
According to stoichiometry :
2 moles of [tex]KBr[/tex] produce = 1 mole of [tex]Br_2[/tex]
Thus 2.99 moles of [tex]KBr[/tex] produce =[tex]\frac{1}{2}\times 2.99=1.495moles[/tex] of [tex]Br_2[/tex]
Mass of [tex]Br_2=moles\times {\text {Molar mass}}=1.495moles\times 159.8g/mol=239g[/tex]
Thus 239 g of [tex]Br_2[/tex] will be produced from 356 g of KBr.
Help me answer this chemistry question. thank you!
Answer:
A. How much decay happens in each flashlight
Explanation:
In an experiment, the DEPENDENT OR RESPONDING VARIABLE is the variable that responds to changes being made to another variable called Independent variable. It is the variable that is measured by an experimenter.
In this question, an experiment was carried out to research the effect of sunlight on plastic decay. Three plastic flashlights were used for this experiment in which one was placed in a dark closet (control), and the others were placed in light at different times or intervals. However, the variable being measured or assessed is the decay of each flashlight. This means that "HOW MUCH DECAY HAPPENS IN EACH FLASHLIGHT" is the dependent variable.
what is the answer pleassssssse helpppp0ppppppppppppppp
Answer:
3
Explanation:
When these marbles collide, what force is experienced by each marble?
Answer:
when they collide they can experience collision
because without force collision wouldn't have happen.
Which of these would you expect to have the highest boiling point?
Pertane: HOC-CH2-CH-CH2-CH)
Neopentane:
H.C-C-CH3
CH3
CH,
CHE
Isopentane:
Cyclopropane
НЕС-СН-СН-СН3
Нас
CHz
a) cyclopropane
b) pentane
c) isopentane
d) neopentane
Answer:
pertane the stronger the force the larger amount of energy needed to break of the connection between the molecules
How many liters of carbon dioxide gas is produced from 7.98x10^24 molecules of C4H10 (2C4H10 + 13O2 → 8CO2 + 10H2O)?
How does carbon cycle
Answer:
The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. ... Carbon is released back into the atmosphere when organisms die, volcanoes erupt, fires blaze, fossil fuels are burned, and through a variety of other mechanisms.
hopefully that answered your question. brainliest would be appreciated. have a awesome day!
Answer:
evaporation or released from natural eruptions by nature
Questions
1. Is the statement true that a gas takes on the shape of the container?
2. What happened to the water when it was poured into the glass? Into the square container?
3. Did the wood have a fixed shape?
4. Of what state of matter is water an example?
5. Of what state of matter is
ice an example?
6. Of what state of matter is steam an example?
This is for a project. Complete in complete sentences. Please. Sorry if this is confusing
Answer:
1. It will take the shape of its container. Particles can move about within a liquid, but they are packed densely enough that volume is maintained. Gaseous matter is composed of particles packed so loosely that it has neither a defined shape nor a defined volume. A gas can be compressed
2. However after pouring the water from one short glass into a tall glass, to be the same amount after being poured into any other container
3. Yes, wood have a fixed shape. Explaination: The reason is that it's solid and solids have a definite volume and shape. ... They have shapes that do not change and volumes that can be measured
4. Water is known to exist in three different states; as a solid, liquid or gas. Clouds, snow, and rain are all made of up of some form of water. A cloud is comprised of tiny water droplets and/or ice crystals, a snowflake is an aggregate of many ice crystals, and rain is just liquid water
5. Solids are sometimes formed when liquids or gases are cooled; ice is an example of a cooled liquid which has become solid. Other examples of solids include wood, metal, and rock at room temperature
6. For example, water commonly exists in three states of matter: solid (ice), liquid (water), and gas (steam)
Explanation:
plzzzzzzzzzzzzzz give brainly
1. It will adopt its container's shape. Within a liquid, particles can move around, yet the volume is maintained because of the liquid's dense packing. Particles in gaseous stuff are arranged so haphazardly that neither their shape nor their volume can be determined.
What is liquid ?The term liquid is defined as substance which is not solid but which flows and can be poured and take a shape of container. water is an example of liquid.
2. However, the same amount of water would be poured into any other container after being transferred from one short glass to a tall glass.
3. The shape of wood is fixed. It's solid, and solids have a distinct volume and shape, which explains why. They have measurements-able volumes and unchanging forms.
4. There are three recognized states of water: solid, liquid, and gas. Snow, rain, and clouds are all composed of water in some way. A snowflake is an accumulation of several ice crystals, a cloud is made up of microscopic water droplets and/or ice crystals, and rain is just liquid water.
5. When liquids or gases are chilled, solids can occasionally form; ice is an example of a cooled liquid that has solidified. At room temperature, solids also include wood, metal, and rock.
6. As an illustration, water typically exists in three states: solid (ice), liquid (water), and gas (steam).
Thus, to learn more about liquid, follow the link;
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Determine the number of moles of phosphorus contained in 4.41 x 10^24
atoms of phosphorus.
Answer:
7.33 mol P
Explanation:
4.41 × 10²⁴ / 6.02 × 10²³ = 7.33
Answer:
the answer is 7.33 mol P
Explanation:
A device which make work easy it call
Given the balanced equation:
2C2H2(g) + 5O2(g) -> 4CO2(g) + 2H2O(l)
How many moles of water are produced after the complete combustion of 2.0 mole of acetlyene, C2H2(g)?
Why are many chemical names so complex?
Answer:
cause they like it that way
Explanation:
btw cant tell if this is legit or not
PLZ HELP I NEED THIS RN!
when the balls reach the bottom of the ramp, which statement will describe their energy?
A. they will have no kinetic energy
B. they will have 100% potential energy
C. they will have 100% kinetic energy
C. they will have different amounts of potential energy
Answer:
they will have 100% kinetic energy
Explanation:
all the potential energy has been used when it is at the bottom of the ramp
Methane is the major component of natural gas. The standard molar enthalpy of formation of methane CH4 is -74.9 kJ/mol. For the balanced reaction equation of methane use:
CH4 + 2O2 --> CO2 + 2H2O.
All the chemicals in this reaction are gases. What is the enthalpy change of this reaction in kJ/mol?
Answer:
[tex]\Delta _rH=-802.2kJ/mol[/tex]
Explanation:
Hello!
In this case, according to the given chemical reaction, it is possible to calculate the enthalpy change of the reaction via:
[tex]\Delta _rH=\Delta _fH_{CO_2}+2\Delta _fH_{H_2O}-\Delta _fH_{CH_4}[/tex]
Since the enthalpy of formation of oxygen is 0. Thus, given the enthalpies of formation of gaseous carbon dioxide and water, we obtain:
[tex]\Delta _rH=(-393.5kJ/mol)+2(-241.8kJ/mol)-(-74.9kJ/mol)\\\\\Delta _rH=-802.2kJ/mol[/tex]
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Which of the following models a synthesis reaction?
Answer: D
Explanation: i’m right
Fill in the Blank
All three types of rock form in which earth layer? _________.
A reversible change, where appearance is altered, but the composition stays the same is _________. An irreversible change that alters the chemical makeup of a substance is _________. Is the melting of ice into liquid water a physical or chemical change? _____ What is involved in any change in matter? ________
The lithosphere is where all three forms of rocks form. A physical change is a reversible change and chemical changes are irreversible. The melting of ice is a physical change and change of matter is chemical.
What are physical and chemical changes. ?The lithosphere is the layer of earth where all three types of rocks such as igneous, metamorphic, and sedimentary can be found. The physical changes are those that affect physical properties and are reversible like heating and cooling.
While the chemical changes are irreversible. The physical changes lead to the change in form of the substance while chemical change leads to the rearrange of matter.
Find out more information about the types of rocks.
brainly.com/question/26400505
If the pOH of a solution is 13, what is the PH of the solution?
Answer: pH= 1
Explanation: pOH + pH =14
A walnut stuck to a pin is burned beneath a can containing 100.0 grams of water at 21°C. After the walnut has completely burned, the
water's final temperature is a warmer 28°C. How much heat energy arose from the burning walnut?
2,000 joules
3,000 joules
5,000 joules
O 9,000 joules
Answer:5000 i think
Explanation:
Copper has two isotopes,
copper-63 and copper-65. It has an atomic mass of 63.546 amu. Sketch a pie graph that shows the approximate abundance of each
copper isotope based on the atomic mass?
Answer:
69.152 % → 63Cu
30.848 % → 65Cu
Explanation:
As you know, the average atomic mass of an element is determined by taking the weighted average of the atomic masses of its naturally occurring isotopes.
HELPPP PLEASE !/!/!/!/!/!/!/!
Answer:
the second question should be along the staircase
__Na3PO4 + __Sr(NO3)2 --> ___Sr3(PO4)2 + __NaNO3
If .0789 moles of Strontium Nitrate are reacted, how many moles of Sodium Phosphate were reacted?
Answer:
0.0526mol
Explanation:
The chemical equation given in this equation is as follows:
Na3PO4 + Sr(NO3)2 → Sr3(PO4)2 + NaNO3
However, this equation is unbalanced as the number of atoms of each element on each side does not correlate. The balanced equation is as follows:
2Na3PO4 + 3Sr(NO3)2 → Sr3(PO4)2 + 6NaNO3
This balanced equation means that:
2 moles of Sodium Phosphate (Na3PO4) is required to react with 3 moles of Strontium Nitrate (Sr(NO3)2)
Hence, if 0.0789 moles of Strontium Nitrate are reacted, then 0.0789 × 2/3
moles of sodium phosphate will also react.
= 0.0789 × 2/3
= 0.1578/3
= 0.0526mol
What new characteristic did John Delton add to the model of the atom BRAINLY WHOEVER GETS IT RIGHT PLEASE IM ON A TIMER