HELP ASAP! STUDY ISLAND
Solar energy is energy from the Sun that is converted into thermal or _____ energy. A. chemical B. mechanical C. nuclear D. electrical
Answers
Explanation:
done here u gooooooooo
Related Questions
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?
Answers
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
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
Answers
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!
help me please and actually try to answer :(
Answers
Na2o + h2so4 ———> na2so4 + h2o
Can anyone balance this please!!??
Answers
Answer:
The equation is already balanced. There's an equal number of materials on each side of the equation.
What is the correct formula for Strontium Selenide?
Answers
Answer:
(SrSe) | SeSr - PubChem.
Explanation:
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.
Answers
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.
*(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
Answers
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
Give three examples of monoatomic molecules.
Answers
Answer:
Helium
Radon
and Neon
Explanation:
Which scientific law states the relationship between an object's mass, acceleration, and amount of force acting on it? *
Answers
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
Answers
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
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.
Answers
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:
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
Answers
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!!!!!!!!!!!!!
According to Dalton's theory, is it possible to convert atoms of one element into atoms of another? Explain.
please help
Answers
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
tug of war results in one team pulling another team arcoss the line this is an example of .
A action forces
B reaction forces
C balanced versus
D unbalanced forces
please help me :)
Answers
Answer:
It's d love
Explanation:
Is molar volume of CH4 different from that of NH3?Explain
Answers
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.
Please respond this is very important!
Giving a lot of points!
Answers
Answer:
a
Explanation:
Liquid octane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 1.1 g of octane is mixed with 1.04 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to significant digits.
Answers
Which process releases energy that eventually produces lightning in the thunderstorm?
Answers
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.
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?
Answers
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:
3. People and instruments produce different ranges of sound temperatures is this true or false
Science
Answers
the non-metal elements selenium has six electrons in its outer orbit what atoms of this element form positively charged or negatively charged ions
Answers
Answer:
positively charged -protons
Negatively charged-electrons
13. Explain why changes in the concentrations of the
reactants and products at equilibrium have no effect
on the value of the equilibrium constant.
Answers
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.All of these properties are for alkali metals except one
Good conductors of heat and electricity
Solids
High melting and boiling points
Silver color
Answers
The question is in the picture and if you don't know it please don't answer with a ridiculous response Thank you!
Answers
Answer: It is B.) 1s^22s^12p^1
Explanation: mind giving me brainliest? :)
Answer:
ñanamaisañia ñanamaisañia
Explanation:
n
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.
Answers
Answer:
?
Explanation:
two of these statement about elements and atoms are true, and one is false. which statements are true
Answers
Answer:
Yeah take a pic or somethin
Explanation:
what is a product of a chemical reaction?
Answers
Answer:
A substance that is present at the end of a chemical reaction.
Water is polar and toluene is non-polar. The solution that forms will be...
A)hydration shell
B)miscible
C)supersaturated
D)immiscible
Answers
Answer:
c supersaturated
Explanation:
hope it helps tell me if i m wrong
Write a scientific explanation that explains how modern whales differ from their ancient ancestors THIS IS A CER so can i get a claim evidence and reasoning
Answers
Answer:
Modern whales evolved by natural selection over long time periods through descent from common ancestors
Explanation:
According to the evolutionary theory proposed by Darwin, natural selection is a biological process by which organisms adapt and change in response to their environment. In this case, ancient whales that were better suited to environmental conditions survived and produced more offspring than non-adapted individuals. In consequence, predominant adaptive traits observed in modern whales were favored by natural selection in the past, while unsuccessful phenotypes progressively disappeared.
10) Air masses are different in many ways. Which of these is NOT different?
a) Atmospheric pressure
b) Temperature
c) Ratio of oxygen/nitrogen
d) Moisture contents
Answers
Answer:D. Ratio of oxygen/nitrogen
Explanation: the ratio will never change no matter the air pressure!