Answer:
because our planet is spinning
which means the objects near the equator are moving at much faster velocities than objects at higher latitudes
I hope this helps✌
The nucleus of an atom is _______________________ charged.
Answer:
positively charged
Which element is an inner transition metal?
uranium (U)
osmium (Os)
radium (Ra)
hafnium (Hf)
Answer:
Os
Explanation:
Atoms of different element can not have same atomic number because only same type of atoms combine to form element. Atoms belonging to different element can have different atomic number. Therefore, the correct option is option A.
What is element?Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. Two or more than two atoms with different physical or chemical properties can not combine together to form an element.
Among all the given options, uranium (U) is an inner transition metal. Inner transition metal are the metals that belongs to f block of periodic table as their last electron goes into f subshell.
Therefore, the correct option is option A.
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How many chloride ions are there in 4 mol of CaCl2
Answer:
48.176 ×10²³ chloride ions
Explanation:
Given data:
Number of chloride ions = ?
Number of moles of CaCl₂= 4 mol
Solution:
One mole of CaCl₂ contain 2 moles of chloride ions.
CaCl₂ → Ca²⁺ + 2Cl⁻
4 moles of CaCl₂ contain,
4 ×2 = 8 moles of chloride ions
Number of chloride ions:
1 mole = 6.022×10²³ ions
8 mol × 6.022×10²³ ions/ 1 mol
48.176 ×10²³ ions
Ionization energy is the energy needed to remove an
electron. How does the atomic radius relate to
ionization energy?
Answer: here u go:
Explanation:
The smaller the radius, the higher the ionization energy. This is because the electrons are being held in closer to the protons, which have opposing charges and therefore hold on to them, in an atom with a small radius.
A sound wave has a frequency of 20 Hz and a wavelength of 100 m. What is speed of the wave
The speed of a wave can be calculated using this formula:
v = f x λ
Where:
v is the wave speed in metres per second, m/s
f is the frequency in hertz, Hz
λ (lambda) is the wavelength in metres, m
Calculation:
Given:
f = 20 Hz
λ = 100m
Using the equation:
v = f x λ
v = 20 x 100
v = 2000 m/s
Therfore, the speed of the wave is 2000 m/s
A sound wave has a wavelength of 100 m and a frequency of 20 Hz. The wave's speed is 2× 10^3 m/s.
assuming frequency = 20 Hz and wavelength = 100 m
utilized concept: v= = 20×100 = 2×10³ m/s
Why is frequency important?The frequency in physics is the quantity of waves passing a fixed location in a unit of time. It also indicates how many cycles or vibrations a body in periodic motion experiences in a given unit of time.
How would you define sound?A sort of energy created by vibrations is sound. The molecules of the air surrounding an item vibrate as a result.. These molecules vibrate because they collide with nearby molecules, which also vibrate as a result.
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Balance the following chemical equations.
1. Fe + 02 → Fe3O4
2. Sr+ 02 → Sro
3. Sn+ NaOH → Na SnO2 + H2
4. K + Br2 → KBr
5. CH3 + O2 + CO2 + H2O
Question 5
1 pts
Chloroethene,C2H3C1, reacts with oxygen according to the equation below.
2 C2H2Cl (9) + 5O2(g) + 4CO2 (g) + 2 H20 g) + 2 HCl (9)
What is the amount, in mol, of H2O produced when 10.0 mol of C2H3Cl and 10.0 mol of
O2 are mixed together, and the above reaction goes to completion?
08.00
10.0
04.00
20.0
Lo
Answer:
4.00 moles of water
Explanation:
The equation of the reaction is:
2 C2H2Cl (9) + 5O2(g) -------> 4CO2 (g) + 2 H20( g) + 2 HCl(g)
To find the limiting reactant, we find the species that yields the lowest number of moles of water.
From the reaction equation;
2 moles of C2H2Cl yields 2 moles of water
10 moles of C2H2Cl yields 10 * 2/2 = 10 moles of water
Similarly;
5 moles of oxygen yields 2 moles of water
10 moles of oxygen will yield 10 *2/5 =4 moles of water
Hence oxygen is the limiting reactant.
10 moles of oxygen yields 4 moles of water.
Sulfur is often found in nature as an element, not combined with other elements in a compound. What does
this fact tell you about the reactivity of sulfur?
Answer:
sulfur is not a highly reactive element under ordinary conditions
Explanation:
the size of a marble is an example of
physical change
physical property
chemical change
chemical property
Answer:
Physical property
Explanation:
If it is right then please rate my answer. also, brainlest would not hurt if it is the brainlest answer.....
Arrange the following elements in order of increasing ionization energy
Picture of elements included.
Ionization Trend: First ionization energy will increase left to right across a period and increase bottom to top of a family (column).
A) Sr, Be, Mg are all in column 2 of the periodic table. Based on the first ionization rule above, from increasing to decreasing energy, the order is: Be, Mg, Sr
B) Bi, Cs, Ba are all in the same row of the periodic table. Based on the first ionization rule above, from increasing to decreasing energy, the order is: Bi, Ba, Cs
C) Same rule as above. Order is: Na, Al, S
The elements in increasing order of ionization energy will be:
a) Be, Mg, Sr
b) Bi, Ba, Cs
c) Na, Al, S
Ionization energy trend:Ionization Trend: First ionization energy will increase left to right across a period and decrease bottom to top of a family (column).
A) Sr, Be, Mg are all in column 2 of the periodic table. Based on the first ionization rule above, from increasing to decreasing energy, the order is: Be, Mg, Sr
B) Bi, Cs, Ba are all in the same row of the periodic table. Based on the first ionization rule above, from increasing to decreasing energy, the order is: Bi, Ba, Cs
C) Similarly, Order is: Na, Al, S
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please answer this question pls
what's the question?
Answer:
The answer is: That there is no answer
Explanation:
Um yeah if you want us to answer a question you gotta give us the question...
How many cm are equal to 1.45m
Answer:
145 centimeters :)
Explanation:
Answer:
145 cm, the decimal moves 2 to the right
What tectonic plate boundary caused the formation of Mount Fuji?
Answer:
the Amurian plate, the the Okhotsk plate, and the Filipino plate all converge in the region beneath Mount Fuji.
Explanation:
b. Water has a specific heat of 4.184 J/gºC. If the temperature of 250 g of
water changes from 22.9°C to 14.7°C, how much heat energy was removed
from the water?
Answer:
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.
Explanation:
The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.
3.5 moles of nitric acid
Answer:
Socratic app
I just learned it
A sample of an element has a mass of 80.01g and a density of 2.70 g/cm3. How many significant figures does the mass have?
The mass has 4 significant figures
Further explanationRules for significant numbers
1. all non-zero numbers are significant numbers 2. a zero which is located between two non-zero numbers including a significant number 3. all zeros are located in the final row written behind the decimal point include significant number 4. zero decimal point is not significant numbera sample has mass = 80.01 g
a zero which is located between two non-zero numbers including a significant number, so the mass has 4 significant figures : 8,0,0 and 1
Which types of reactions would result in the production of gas?
PLEASE HELP NOW!! worth lots of points
Answer:
farts
Explanation:
One fitness magazine suggested that the food that you eat is like a battery because it has energy. Do you think that
the banana that Mila ate had energy? Explain why you think this
Answer:
Explanation:
In this case, the fitness magazine compared the food we eat with a battery because the food provides energy for the human body to perform its daily activities.
The banana is an excellent source of energy, as it is a fruit with a high content of carbohydrates and fructose, it is an excellent food to be eaten before physical exercise, as it provides the muscles with enough energy to increase performance before and after exercise. , is a fruit rich in potassium, magnesium, phosphorus, and vitamins a and c, which gives greater strength and energy.
The movement of substances from an area of low concentration to an area of high concentration is called what?
Answer:
Diffusion
Explanation:
Answer:diffusion
Explanation:
Which describes 5 molecules of water?
1. 2 H2O
2. H2O3
3. 5 H2O
5 molecules of water is 5 H2O.
One water , H2O. molecule consist of one oxygen atom bonded with two atoms of hydrogen. The structure of water molecule is bent. Water is a polar compound. Oxygen is more electronegative than the hydrogen atom. The oxygen atom get partial negative charge and the hydrogen atoms get partial positive charge. Water is a universal solvent. The hydrogen and oxygen atoms are held together by a covalent bond . covalent bond is formed by the sharing of electrons between the two atoms. water The chemical name of water is Dihydrogen monoxide.
Thus, 5 molecules of water is 5 H2O.
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pls help me, ill mark brainliest and give 5 stars
Answer:
Decomposition!
Answer:
ayo sooooo roasie how did u get ur mindreading superpowers cuz u read my mind when i was ab answer
Explanation:
4)If light is acting like a particle, then what should you adjust in the simulation to
make faster-moving electrons leave the metal surface
Answer:
We can either increase the frequency of the light source or decrease the wavelength of the light source in the simulation
Explanation:
When light approaches or strike a metal surface, we can observe electrons coming out the metal surface. So, when a light wave hits a metal surface, it becomes protons; thus, we can either increase the frequency of the light source or decrease the wavelength of the light source in the simulation.
Thus, a higher energy photon will strike the electron, and the electrons tend to gain energy from the photons.
widte speed rom me and distance 502
A yacht sailed at a steady speed for 0.5 hours, passing a cruise ship that was traveling at 25
kilometers per hour. During that time, the yacht traveled 50 kilometers. What was the yacht's
speed?
Write your answer as a whole number.
kilometers per hour
Submit
The speed of the yacht : 100 km/h
Further explanationLinear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration
At constant velocity motion:the speed of vo = v = constant
acceleration = a = 0
Δx = vt or x = xo + vt
An equation of constant velocity motion
[tex]\large {\boxed {\bold {x = v \times \: t}}}[/tex]
x = distance = m
v = speed = m / s
t = time = seconds
A yacht sailed at a steady speed for 0.5 hours, and traveled 50 kilometers
so the velocity/speed:
[tex]\tt v=\dfrac{x}{t}\\\\v=\dfrac{50~km}{0.5~h}=\boxed{\bold{100~km/h}}[/tex]
pless answer thisss!!
There are 55.0 g of neon gas in a 3.0 L cylinder, the pressure is 4.5 atm what is the temp of the gas
Answer:
60.9 Kelvin
Explanation: First, write out everything that you know. You are tring to find the temperature, so the temperature will be represented by x.
Pressure (P)= 4.5 atm
Volume (V)= 3L
Number of Moles (n)= ?
Gas Consant (R)= 0.0821, if the pressure is in atm, that means r is 0.0821
Temperature (T)= x
We don't have all the information we need to plug the values into the equation. We still need to know how many moles 55.0 grans of neon is.
Ne in Grams= 55
Atomic Mass of Ne= 20.1797
55/20.1797= 2.7
moles= 2.7
Now that we have all the information we need, plug everying into the equation. In case you don't know, the Ideal Gas Law Equation is PV= nRT.
(4.5)(3) = (2.7)(0.821)x
x= 60.9
Now you have your temperature! It is 60.9 in Kelvin.
I need a Concept map of acids and bases. Thank you!
Answer:
sorry it's so tiny
Explanation:
How long will it take for 500.0g of radium decay to 2.0g
What does the acronym BARF
Answer:
Born Again Raw Feeders
What is your carbon footprint?
the amount of carbon dioxide you use when recycling
the amount of oxygen put into the atmosphere due to your consumption of fossil fuels
the amount of carbon dioxide and oxygen in the atmosphere at any given time
the amount of carbon dioxide put into the atmosphere due to your consumption of fossil fuels
Answer:
c. .....................
Answer: the amount of carbon dioxide put into the atmosphere due to your consumption of fossil fuels
Your carbon footprint is the amount of carbon dioxide and other carbon compounds emitted, because of your use of fossil fuels.
Hope this helps!
There are seven petals on that flower.
O
qualitative
quantitative
