Answer:
Ooo points, You get teal, turquoise, and cyan :)
According to Dalton's theory, is it possible to convert atoms of one element into atoms of another? Explain.
please help
Answer:
No, it's not possible to change the atoms into a different element.
Explanation:
No, because rule four of his theory says that change cannot occur
the non-metal elements selenium has six electrons in its outer orbit what atoms of this element form positively charged or negatively charged ions
Answer:
positively charged -protons
Negatively charged-electrons
What best explains how they should complete the table?
with “Inside the nucleus,” because the particle is a proton
with “Inside the nucleus,” because the particle is a neutron
with “Outside the nucleus,” because the particle is a proton
with “Outside the nucleus,” because the particle is an electron
Explanation:
An atom is made up of three fundamental subatomic particles which are:
Protons Neutrons ElectronsProtons are the positively charged particles in an atom. They are found in the nucleus of the atom.
Neutrons do not carry any charges, like the protons, they occupy the tiny nuclear space.
Electrons are positively charged particles and they occupy the extra-nuclear space of the atom.
Both protons and neutrons are found in the nucleus.Answer:
Depends, you have to give us a table, let me explain how to answer this.
Explanation:
“Inside the nucleus,” because the particle is a proton
For this to be true, it has to have a mass (amu) of 1 and it has to have a positive charge
“Inside the nucleus,” because the particle is a neutron
For this to be true, it has to have a mass (amu) of 1 and it has to have a neutral charge
“Outside the nucleus,” because the particle is a proton
This is instantly wrong because protons are located in the nucleus
“Outside the nucleus,” because the particle is an electron
For this to be true, it has to have a mass (amu) of 1/2000 and it has to have a negative charge
Which scientific law states the relationship between an object's mass, acceleration, and amount of force acting on it? *
Answer:
Newtons Second law of motion
Explanation:
If the reaction begins with 12.0 grams of O2 how many grams of NO2 will be produced given the following equation: 2 NO + O2 --> 2 NO2
Answer:
69g
Explanation:
Given reaction expression:
2NO + O₂ →2 NO₂
Unknown:
Mass of NO₂ produced = ?
Solution:
To solve this problem, let us use the mole concept. We solve from the known to the unknown
In this regard, find the number of moles of O₂ given;
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of O₂ = 2(16g/mol) = 32g/mol
Number of moles = [tex]\frac{12}{16}[/tex] = 0.75mole
From the balanced reaction equation;
1 mole of O₂ will produce 2mole of NO₂;
0.75 mole of O₂ will produce 1.5mole of NO₂
Therefore, mass of NO₂;
Mass of NO₂ = number of moles x molar mass
Molar mass of NO₂ = 14 + 2(16) = 46g/mol
Molar mass of NO₂ = 1.5 x 46 = 69g
Give three examples of monoatomic molecules.
Answer:
Helium
Radon
and Neon
Explanation:
Consider the geologic time scale. A scientist discovered two fossils. Fossil A is from the Triassic time period. Fossil B is from the Cambrian time period. Which one is older? Why?
Answer:
Cambrian
Explanation:
The fossil from the Cambrian is older than the one from the Triassic. This is because in the geologic time scale, the Cambrian is older than the Triassic.
Absolute age of the Cambrian is between 541 - 484myaIt is the first geological period in the Paleozoic era. The Triassic is the earliest period of the Mesozoic eraIt occurred about 237mya ago. Therefore, the fossils which corresponds to the Cambrian is the oldest.*(d) Impure copper can be purified using electrolysis.
In this electrolysis
• the anode is made of impure copper
• the cathode is made from pure copper
• the electrolyte is copper sulfate solution.
The apparatus at the start of the experiment is shown in Figure 7.
During the electrolysis three observations are made
• the sizes of both the anode and the cathode change
• a solid appears directly beneath the anode
• the colour of the copper sulfate solution does not change.
Explain all three observations.
i will give u brainliest if u get it right
Answer:
iaiaiaiiaiaiaaiiaiaiaiaiaiia
Explanation:
babababbabahahahhahahahhahahahhahahahahahhahahahahahhahahhahahyayoenbshiwibbshhjjahjb bjkkoankokokkoekormkrokrkrk
The sizes of both the anode and the cathode change because the copper ions travel from the anode to the cathode. Therefore, a solid copper appears directly beneath the anode. The number of copper ions remains the same so there is no color in the CuSO₄ solution.
What is electrolytic refining?Electrolytic refining can be described as a process of refining metal, especially copper by the process of electrolysis. During electrolysis, impure metal is used as the anode and pure metal as the cathode.
The pure metal is formed at the cathode when the electrical current is applied by dissolving impure metal at the anode.
In copper refining, a block of impure copper is taken as an anode. CuSO₄ is used as a graphite-coated electrolyte along with pure copper, as a cathode. In electrolysis, CuSO₄ divides into a positive ion of copper (Cu²⁺) and sulfate (SO₄²⁻). The copper ion (Cu²⁺) travels made of pure copper where it absorbs the electrons from the cathode.
Learn more about electrorefining, here:
https://brainly.com/question/15124516
#SPJ2
Na2o + h2so4 ———> na2so4 + h2o
Can anyone balance this please!!??
Answer:
The equation is already balanced. There's an equal number of materials on each side of the equation.
La etiqueta de una bebida transparente con un ligero toque anaranjado indica que contiene aga con un 15 porciento de zumo de naranja, un 2porciento de vitamina C y un 1porciento de colorantes. Dentro de la botella hay 800g de zumo. calcula la masa e la vitamina C y colorantes en los 800 gramos de zumo
Respuesta:
16 gramos de vitamina C y 8 gramos de colorantes.
Explanation:
Debemos multiplicar el porcentaje de cada componente por la cantidad total (100 %) de zumo.
800 g de zumo = 100%
- Tenemos un 2 porciento (2 en 100 o 2/100) de vitamina C. Por lo tanto, la cantidad en gramos de vitamina C es:
2/100 x 800 g = 16 g
- Tenemos un 1 porciento de colorantes en el zumo (1/100). Por lo tanto, la cantidad en gramos de colorantes es:
1/100 x 800 g = 8 g
Water is polar and toluene is non-polar. The solution that forms will be...
A)hydration shell
B)miscible
C)supersaturated
D)immiscible
Answer:
c supersaturated
Explanation:
hope it helps tell me if i m wrong
Is molar volume of CH4 different from that of NH3?Explain
Answer:
Explanation:
Well At 0 °C and 1 atm pressure (STP conditions), ideal gases have a molar volume of 22.4 Liters. When the molar volumes of NH3 and CH4 are measured at STP, the molar volume of NH3 is 22.1 L and the molar volume of CH4 is 22.4 L. ... NH3 molecules take up more volume than CH4 molecules.
The runners have just started a race. They started at rest and are getting faster.
What statement best describes the motion of the runners at the beginning of the race?
A.
Acceleration is positive and speed is increasing.
B.
Acceleration and speed both remain constant.
C.
Velocity and speed both remain constant.
D.
Velocity remains the same and speed is positive.
A. Acceleration is positive and speed is increasing.
Further explanationThe motion performed by a runner is part of a uniformly accelerated motion with constant acceleration.
Equation used
[tex]\tt \boxed{\bold{v_f=v_i+at}}[/tex]
vf = final velocity
vi = vo = initial velocity
When a runner moves from rest, his speed will increase from being at rest (vi=0) and then move with a constant acceleration(a), and as soon as he crosses the finish line his acceleration will decrease (experience a deceleration ⇒a=- ) and decrease his speed until it finally stops
Velocity and speed are different because velocity itself is a vector quantity that takes into account direction and displacement, while speed is a scalar quantity (only distance).
So the speed does not take positive or negative values because it involves direction, while acceleration takes positive and negative values (deceleration) because it takes direction.
3. People and instruments produce different ranges of sound temperatures is this true or false
Science
help me please and actually try to answer :(
Protective clothing can be made from rubber or plastic, because they are good ______________________; they don't allow the flow of electrical charges.
Group of answer choices
circuits
conductors
insulators
Answer: Materials that do not allow electricity to pass easily through them are called insulators. Rubber, glass, plastic, and cloth are poor conductors of electricity. This is why electrical wires are covered in rubber, plastic, or cloth.
Explanation: I hoped that helped plzz mark me as brainliest!
we need to use the table to provide the answer, help ;-;
a. The symbol [tex]\tt _{11}^{23}Na[/tex], [tex]\tt _{18}^{40}Ar[/tex], [tex]\tt _{15}^{31}P^{3-}[/tex], [tex]\tt _{13}^{27}Al^{3+}[/tex]
b. Isotope of Na
Further explanationAtomic number=number of protons=number of electrons(neutral atom)
Number of neutrons=mass number-atomic number
Mass number=protons+neutrons
B. atomic number=11, mass number=11+12=23⇒Sodium
[tex]\tt _{11}^{23}Na[/tex]
C. atomic number=18, mass number=18+22=40⇒Argon
[tex]\tt _{18}^{40}Ar[/tex]
D. atomic number=15, mass number=15+16=31, charge -3(electron-proton)⇒Phosphor
[tex]\tt _{15}^{31}P^{3-}[/tex]
E. atomic number=13, mass number=13+14=27, charge +3(proton-electron)⇒Aluminium
[tex]\tt _{13}^{27}Al^{3+}[/tex]
Isotope=the same atomic mass, different neutron(mass number)
So the atom⇒isotope of Sodium(Na)
A 100 kg log of wood was neatly cut into two smaller pieces. What is the total mass of all the smaller pieces put together?
Answer:
B
Explanation:
It is B because it's neatly cut into two parts, 50 and 50. That still adds up to 100 its the same total amount just cut up. So, 100 kg
Answer:
its B. 100 cleanly cut in half is 50/50. but it's still gonna be 100 total.
Explanation:
Is the osmosis egg challenge a chemical reaction?
If so, was the stored energy in the reactants released (exothermic) or absorbed (endothermic) during this physical change?
If not, was energy released (exothermic) or absorbed (endothermic) by the molecules during this physical change?
Answer:
Answer is C because in exothermic reactions, energy releases.
in Cellular respiration,
ATP+H20 (water) = ADP+ Pi + Energy
So celullar respiration is exothermic and releases energy
Answer:
yes it is
Explanation:
because what ever you mix in it it would explode and give a chemical reaction
two of these statement about elements and atoms are true, and one is false. which statements are true
Answer:
Yeah take a pic or somethin
Explanation:
All of these properties are for alkali metals except one
Good conductors of heat and electricity
Solids
High melting and boiling points
Silver color
Which refers specifically to a solution with as much dissolved solute as it can hold at a given temperature?
supersaturated
saturated
heterogeneous
homogeneous
Please and fast
Answer:
Saturated is the answer you are looking for
Explanation:
This is saturated's meaning: holding as much water or moisture as can be absorbed; thoroughly soaked.
"a mass of saturated air decreases in temperature as it rises in the atmosphere" Hence why the answer is saturated! :)
Hope this helps! :)
Answer: Saturated
Explanation: On Edge!!!!!!!!!!!!!
Which process releases energy that eventually produces lightning in the thunderstorm?
Answer:
Answer: B. Water condenses to form clouds.
Explanation:
When the moisture condenses, this results in the release of energy. The energy causes the air to be warm and results in the rise of air in the upper atmosphere. This process results in the instability in the atmosphere and cumulonimbus clouds are formed. These clouds support lightening during a thunderstorm.
13. Explain why changes in the concentrations of the
reactants and products at equilibrium have no effect
on the value of the equilibrium constant.
Answer:
It is temperature dependent only
Explanation:
For any system in equilibrium, the molar concentration of all species on the right hand side are related to the molar concentrations of those at the left side by a constant known as the equilibrium constant.
The equilibrium constant is a constant at a given temperature. The constant is temperature dependent only. It is not dependent on the values of concentration or pressure of a system.What is the correct formula for Strontium Selenide?
Answer:
(SrSe) | SeSr - PubChem.
Explanation:
Si un operador debe elevar una carga de 100 Kg. ¿Con cuál de las siguientes máquinas simples va a realizar menor esfuerzo? Justifique analíticamente. a) Plano inclinado de 30° sin rozamiento. b) Palanca de primer género con un brazo de potencia de 1 mts y brazo de resistencia de 25 cm. C) Aparejo factorial con 3 poleas móviles. d) Torno con una manivela de 50 cm y el diámetro del tambor de 15 cm.
Answer:
?
Explanation:
The question is in the picture and if you don't know it please don't answer with a ridiculous response Thank you!
Answer: It is B.) 1s^22s^12p^1
Explanation: mind giving me brainliest? :)
Answer:
ñanamaisañia ñanamaisañia
Explanation:
n
what is a product of a chemical reaction?
Answer:
A substance that is present at the end of a chemical reaction.
What’s different about the object floating and the water?
I need help plz.
Answer:
Different objects float at different levels in the water because as most regular objects are lowered into the surface of water, the upward push of the water steadily increases until it is in balance with the weight force of the object, and the object then continues floating at this level with the two forces in balance.
If 18 grams of oxygen reacts completely with 4 grams of hydrogen, we would expect how many grams of water?
A.) Less than 22 grams because some mass is lost in the reaction
B.) More than 22 grams because the oxygen gains mass during the reaction
C.) 22 grams because mass cannot be created or destroyed
D.) There is no way to tell from this information.
Answer: 22 grams because mass cannot be created or destroyed
Explanation: I just took the test
Answer:
C.) 22 grams because mass cannot be created or destroyed
Explanation: