The term ionic is used when compounds are formed from a metal element and non metal element because of the transfer of electrons from the metallic to the non metallic elements to become ions
Ionic combination is the process of chemical combination that mostly happens between metals and nonmetals in which metals lose electrons and non metals gain electrons.
Metals are reducing agents because they are highly electropositive. Hence they become ionized by losing electrons to electronegative elements like the non metals
Non metals are oxidizing agents because they become ionized by gaining electrons from electropositive elements, mostly metals.
Therefore, the term ionic is used when compounds are formed from a metal element and non metal element because of the transfer of electrons from the metallic to the non metallic elements to become ions
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Durante 50 s un cuerpo viaja a una velocidad de 18.5 m/s, ¿Qué distancia recorrió?
Answer:
Distancia = 925 metros.
Explanation:
Dados los siguientes datos;
Tiempo = 50 segundos
Velocidad = 18.5 m/s
Para encontrar la distancia recorrida;
Matemáticamente, la distancia viene dada por la fórmula;
[tex] Distancia = velocidad * tiempo [/tex]
Sustituyendo en la fórmula, tenemos;
[tex] Distancia = 18.5 * 50 [/tex]
Distancia = 925 m.
Por tanto, el cuerpo recorrió una distancia de 925 metros.
Plants are able to grow toward the light due to the process known as phototropism. This process takes place inside the plant. Is i Behavioral,structural,or Physiological
Answer:
Physiological
Explanation:
The process whereby plants respond and grow towards light is a physiological process.
Physiological processes are life-sustaining processes that require the combined efforts of cells, tissues, organs, and or systems along with that of biomolecules in the body.
The response of plants to light requires the efforts of a hormone that triggers the rapid mitotic division of cells of tissues/organs that are directly opposite the light source. Thus, the faster rate of division of these cells as compared to the cells of tissues/organs that are directly in contact with light leads to the plant's tissues/organs bending towards the light.
How many moles of solute should be dissolved into 3.0 L of solvent to make a concentration of 2.0 M?
6.0 mol
1.5 mol
0.67 mol
1.0 mol
Answer:
There are 0.1 moles of solute in 250 mL of 0.4 M solution.
How many grams are in 2.45E24 formula units of Fp3BZ2? The molar mass of Fp3Bz2. is 97.05
g/mol.
Answer:
394.99g
Explanation:
The number of moles of a substance can be calculated by dividing the number of atoms of such substance by Avagadro's number (6.02 × 10^23)
n = nA ÷ 6.02 × 10^23
The number of atoms of Fp3BZ2 in this question is 2.45E24 formula units i.e. 2.45 × 10^24
n = 2.45 × 10^24 ÷ 6.02 × 10^23
n = 2.45/6.02 × 10^(24-23)
n = 0.407 × 10¹
n = 4.07moles
Using mole = mass/molar mass
Where; molar mass of Fp3Bz2. is 97.05
g/mol.
mass = molar mass × mole
mass = 97.05 × 4.07
mass = 394.99g
A 25°C, una solución de HNO3, de 5L de volumen tiene una concentración de 18% en peso. Si la densidad de la solución es 1,1 g/mL, determine la normalidad
Answer:
[HNO₃] = 3.14 N
Explanation:
Relacionando normalidad con molaridad, ydado que el HNO₃ tiene solo un protón, ambas van a coinicidir asi que calculando la molaridad, será lo mismo decir que ese valor pertenece a la concentración normal.
Densidad de solución = 1.1 g/mL
Volumen de solución = 5L = 5000 mL
Masa de solución = 1.1 g/mL . 5000 mL = 5500 g
Ahora usamos el % p/p.
Si sabemos que en 100g de solución hay 18 g de soluto
En 5500 g de solución tendremos (5500 . 18) /100 = 990 g
Convertimos a moles = 990 g . 1mol /63g = 15.7 moles
Como el volumen de solución es 5L = 15.7 mol /5L = 3.14 M = 3.14N
Basicamente para calcular la normalidad hay que saber calcular los equivalentes de soluto los cuales se expresan como
masa de soluto / Equivalentes gramo, donde los equivalentes gramo se definen como el peso molecular /valencia. En este caso como el acido nitrico es monoprótico, la valencia es 1, y haciendo el procedimiento usando densidad de solución y el % peso en peso, ya sacamos la masa de soluto.
990 g / 63g/mol / 1 = 15.7 Equivalentes
N = Equivalentes/L de solucion → 15.7 Eq /5 L = 3.14N
The normality is 3.14 N
Given that the Density of solution = 1.1 g/mL
Volume = 5L = 5000 mL
So, Mass of solution = 1.1 g/mL . 5000 mL = 5500 g
Now we use % w/w.
Given that in 100g of solution there is 18 g of solute
Hence 5500 g of solution contains
(5500 . 18) /100 = 990 g of solute
As the volume of the solution is 5L, to calculate the normality of the solution
N = Mass of solute in grams/(volume of solution in litres × Equivalent weight)
Equivalent weight = molar mass/ number of hydrogen ions
here the number of H ions = 1
hence, equivalent weight = 63/1 = 63
The Normality is 990/(5×63) = 3.14N
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HELP PLEASE Which type of power generation can produce carbon dioxide? solar hydroelectric coal wind
Answer:
COAL
Explanation:
Answer:
Coal!
Explanation:
Hope this helps!
Mrs. McGees class is making a list of examples of how weathering and erosion changes the surface of Earth. Which of the following should NOT be on the list?
A. Breaking down rocks
B. Creating a canyon
C. Building mountains4
D. Making new soil
Answer:
Building mountains.
Explanation:
Mountains are built by land being pushed over time. Its not made by weathering and erosion!
Hope this helps! :)
EASY!!!!! ILL MARK BRAINLIEST!!!!!!!!
why does measured current differ from calculated current
Answer:
No component is perfect. All have tolerances that can vary. If you construct a simple circuit where a 10 volt power supply feeds a 10 ohm resistor, you would expect to measure a current of one ampere. BUT - the wiring has some resistance too. This adds perhaps 0.1 ohms to the circuit. The resistor has a +-5% tolerance. If it is 5% high, it may measure 10.5 ohms. That's a total circuit resistance of 10.6 ohms. The power supply may have a tolerance of +-1%. Suppose it's 1% low. That's an output of 9.9 volts in real life. So you have 9.9 volts dropped across 10.6 ohms. you will measure closer to 0.934 amps instead of 1.000 amps. To make matters worse, most electronic components have a temperature coefficient, that is, their values change with different temperatures. You may get a completely different reading tomorrow if the temperature is different! Finally, with current measurements in particular, you are inserting the ammeter in series with the circuit under test. Ammeters have some inherent resistance too, so by putting the ammeter in the circuit, you are changing the very current you are trying to measure (a little)! Oh yeah, the ammeter has a tolerance too. Its reading may be off a little even if everything else is perfect. Sometimes you have to wonder how we get a decent reading at all. Fortunately the errors are usually fairly small, and not all tolerances are off in the same direction or off the maximum amount. They tend to cancel each other out somewhat. BUT - in rare circumstances everything CAN happen like I said, and the error can be huge.
Explanation:
Nitrogen monoxide + oxygen → nitrogen dioxide.
How do.i write that in skeleton equation
What’s an example of phase change you’ve seen in real life?
Answer:
Melting and boiling will be seen in this example. Condensation might be seen as well. In the Phases of Water Gizmo™, you can heat up or cool down a container of water.
Explanation:
Solve this puzzle
R+R
what is the radius of a circle i
s
What is the oxidation number of nitrogen in pb (NO3)2
Answer:
The oxidation number of N in is +5
Explanation:
CH4+2 O2-> CO2 + 2 H2O
You burned 15.0 grams of methane (CH4) in an excess of oxygen and formed 23.8 grams of water. What was your percent yield, rounded to 3 sig-figs?
C= 12.001 g/mol
H= 1.008 g/mol
O= 16g/mol
From the chemical equation it is clear that, one mole or 16 g of methane gas gives 2 moles or 36 g of water. Then, 15 g gives 33.7 g of water. The actual yield is 23.8 g. Then the percent yield is 70.6%.
What is percent yield of a reaction?Percent yield of a reaction is the ratio of its actual yield to the theoretical yield multiplied by 100. The theoretical yield is calculated from the balanced chemical equation of the reaction.
molar mass of methane gas = 16 g/mol
molar mass of water = 18 g/mol
16 g of methane gives 2 moles or 36 g of water. Then 15 g of methane will gives:
(15×36)/16 = 33.7g
The actual yield of water = 23.8 g
then,
percent yield = 23.8 g/33.7 g × 100 = 70.6%.
Therefore, the percent yield of water is 70.6%.
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Which indicates how evidence of climate change supports the theory of continental drift?
1. coal fields in several continents
2. volcano formation
3. glacial evidence
4. folded mountains in Africa and South America
Answer:
glacial evidence found in South America
Answer: C. Glacial evidence
the number of ___ in an atom tells you how many chemical bonds that atom can form
**PLEASE SHOW YOUR WORK**Calculate how much energy would be necessary to convert 250.0 grams of ice at -30°C to steam at 145°C.
Assume that the only time that liquid water changes to gas is when it is boiling. Please help me
Answer:
Q= mc∆T(ice) + mLF(ice) + mc∆T(water) + mLV(water) + mc∆T(steam)
m=250 g = 0.25 kg = ¼ kg c(ice)= 2100 J/kg.K c(water)= 4200 J/kg.K LF(ice)= 333.7 kJ/kg LV(water)= 2256 kJ/kg c(steam)= 2080 J/kg.K
Explanation:
Q= ¼ × 2100 × (0°-(-30°)) + ¼ × 333700 + ¼ × 4200 × (100°-0°) + ¼ × 2256000 + ¼ × 2080 × (145°-100°)
Q= 15750 + 83425 + 105000 + 564000 + 23400
Q= 791575 J
Wind is created by air flowing from a low pressure area to a high pressure area. *
True
False
You need to buy some shirts and pants for
school. Pants cost $20 each and shirts cost
$15 each. You have $120, and need to buy at
least 9 items.
Answer:
Explanation: I did the work online because I just worked on this.
Which of the following best describes the location of element Tin?
Group 4 , Period 4, , ,
Group 16, Period 5
Group 14, Period 5
Group 5, Period 15
Answer:
The location of element tin is
Group 14, Period 5
Explanation:
What does the steepness of the line on the graph represent?
Answer:
The steepness of a hill is called a slope. The same goes for the steepness of a line. The slope is defined as the ratio of the vertical change between two points, the rise, to the horizontal change between the same two points, the run.
Write the systematic names of the following
I think it's aluminium chloride
Help! Need it ASAP!
Is steam and vapour different? If they are then how are they different?
Answer:
Explanation:
Water vapor is when water molecules are present in the air, while steam is water heated to the point that it turns into gas. In simplified science, both are referred to as the gaseous state of water. Steam is usually white or translucent in nature, while water vapor can be clear or translucent.
Steam is simply, water vapor. Hence, the key difference between steam and vapor is that steam is the gaseous state of water whereas vapor is the gaseous state of any substance. Moreover, steam is typically invisible while the vapor of some substances is colorful.
What conditions prevail (are mostly found) in the rain shadow area?
-dinosaurs and rocks conditions
-dry and desert conditions
-cold and foggy conditions
-wet and rainy conditions
Use your understanding of the terms "soluble" and "insoluble" to explain why you must shake a bottle of salad dressing made with oil and vinegar before you use it.
Answer:
See explanation
Explanation:
In chemistry, the idea of "like dissolves like" is of utmost importance. A substance is only soluble in another with which it can effectively interact.
We must note that to be "soluble" means that the solute actually interacts effectively (dissolves) in the solvent.
However, vinegar is a polar substance while oil is a non polar substance hence the two can not effectively interact. That is, the vinegar can not dissolve in oil.
The two will separate into two phases upon standing. Therefore, the bottle of salad dressing made with oil and vinegar must be shaken in order to mix the two thoroughly before it is used.
STOICHIOMETRY
3. Use this equation to answer the questions below: Br2 + Cl2 → 2BrCl.
a. How many moles of BrCl form when 2.74 mol Cl2 react with excess Br2?
Answer:
Explanation:
Br₂(g) + Cl₂(g) => 2BrCl(g)
excess 2.74mole ?moles
Rxn ratio is 1mole Cl₂(g) : 2mole BrCl which means the yield of BrCl must be larger mole value than the Cl₂(g) mole value. This is accomplished by multiplying the given moles Cl₂(g) by a ratio of coefficients that will make the results larger.
moles BrCl(g) produced = 2/1(2.47mole BrCl(g) = 5.48 mole BrCl(g)
What happens to the energy of gas particles when an elastic collision takes place?
Select one:
a.The more massive gas particle gains energy
b.The least massive gas particle looses energy
c.The more massive gas particle looses energy
d.No energy is exchanged between the gas particles
Answer:
the answer is D
Explanation:
When the elastic collision happens the particles energy does not change. There is no loss or gain of energy due to the elastic collision.
The energy of gas particles when an elastic collision takes place then "No energy is exchanged between the gas particles"
What is elastic collision?A collision between two bodies that would be elastic occurs when their combined kinetic energy stays constant.
What is energy?Energy is the ability to do tasks. It can exist in various forms, including potential, kinetic, thermal, electrical, chemical, and nuclear.
When two objects collide, there was no net loss of kinetic energy across the system. This is known as an elastic collision. In elastic collisions, momentum, as well as kinetic energy would both be conserved.
Therefore the correct answer will be option (d)
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What is permafrost? a. dry desert soil c. ice on the tundra b. muddy soil d. soil that is always frozen
Answer:
d. soil that is always frozen
Explanation:
Permafrost is the layer of ground that remains frozen the complete year. Soil, rocks and sediments collectively together forms the permafrost. Such soil may remain frozen for a period of two or more than two years. A large part of the Earth's surface has been covered by the layer of permafrost. These are found mainly near the high mountains and especially near North and South poles.
Relative formula mass of carbon manoxide
Explanation:
The relative formula mass of a substance, shown in grams, is called one mole of that substance. So one mole of carbon monoxide has a mass of 28 g, and one mole of sodium oxide has a mass of 62 g
Answer:
M(CO)=28 (g/mol)
Explanation:
M= 12+16=28 (g/mol)
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