Answers
Answer:
Here is your answer!!
Explanation:
YW! :]
Related Questions
Which of the following corresponds to an alpha particle?
A. 1/4He
B. 3/2He
C. 2/2H
D. 4/2He
Answers
Answer:
D. 4/2 He corresponds to an alpha particle.
ARTICLE:
When Olafur Eliasson and Frederik Ottesen heard that more than 1 billion people on Earth don’t have access to electricity, they wanted to help. In many places, lack of electricity means students can’t study after dark and families can’t cook after the sun goes down. It’s also harder for doctors and nurses to treat patients without good lighting. Eliasson and Ottesen decided to invent a solar lamp that would provide light without costing a lot of money, polluting the air, or causing fires.
Their solution? The Little Sun lamp is a sun-shaped light with a light bulb on one side and a solar panel on the other. The Little Sun lamp uses energy to provide light to people who need it, but the Little Sun doesn’t make its own energy. To run, the lamp needs to get energy from somewhere else. In this case, that source of energy is the sun. The solar panel on the back of the lamp converts light energy from the sun into potential energy that can be stored in a battery and used later to make the light bulb shine. Little Sun lamps charge in the sun during the day and provide light at night, allowing people to study, cook, work, and take care of other things even after the sun sets. They’re inexpensive, don’t pollute, and don’t cause fires.
questions: 2) How does the Little Sun Lamp help people around the world get light?
3) How does the Little Sun Lamp use energy from the sun to make the light bulb shine?
Answers
Answer:
got light to charge from the sun
Explanation:
they did it so that people don't pollute the ozone layer and thats why they invent that and it help them in every way
what i compound is
FeI2
Answers
Answer:
iodide
Explanation:
Answer:
Iron(II) iodide
Explanation:
convert 3.49g/cm³ to kg/m³
Answers
1 g/cm3 to kg/m3 = 1000 kg/m3
3.49 g/cm³= 3.49 x 1000
= 3490 kg/m³
Ans: 3490 kg/m³
in metallurgy hydrogen reduce metal oxides to
Answers
Answer:
Considering the above series we can say that hydrogen can reduce only oxides of copper, mercury, silver and gold as these metals are less reactive than hydrogen.
Please help I’m so lost!! Chemistry
Answers
Answer:
i will help you
Explanation:
if the reactions have more energy than the products this means that there is some energy that given outside and this reaction will called an exothermic reaction.
But if the reaction have less energy than the products this means that there is some energy that taken from outside and this reaction is called an endothermic reaction.
The molarity of an aqueous solution of CaCl is defined as the
Answers
Answer:
Molarity of aqueous solution of CaCl2 can be defined as moles of CaCl2 per litre of solution
Identify the reactant that gets oxidized in the following reaction.
2 AgNO₃(aq) + CaI₂(aq) → 2 AgI(s) + Ca(NO₃)₂(aq)
A) Ag in AgNO₃
B) I in CaI₂
C) N in AgNO₃
D) Ca in CaI₂
E) This is not an oxidation/reduction type of reaction
Answers
Answer:
E) This is not an Oxidation/ Reduction type of reaction
Explanation:
Oxidation involves the loss of electrons while reduction involves the addition of electrons. None of the elements change their oxidation number in the reaction, so this is not an oxidation/reduction type of reaction.
The addition of oxygen and the removal is electrons is called oxidation. In a reaction that has both the process is called the redox reactions.
The correct answer to the question is option E
In this reaction, not any elements have the loose and gain the electrons in order to tell the oxidation and reduction.
This reaction is a neutralization reaction.
Hence, the correct answer is E that is not an oxidation/reduction type of reaction.
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what is the functional group and homologous series of ethyl butyrate?
Answers
Answer:
Functional group: ROR'
Homologous series: ester [C6H12O2]
Mark brainliest please
Which two characteristics determine the strength of the gravitational force
between two objects?
A. The distance between the objects' centers
B. The distance between the objects' surfaces
C. The amount of matter in the objects
D. The total volume of the objects
Answers
Answer:
A and C
Explanation:
I took the test
The distance between the objects' centers and The amount of matter in the objects are two characteristics determine the strength of the gravitational force between two objects.
What is Gravitational force?All objects with mass or energy are attracted to one another by gravity, which is a fundamental interaction.
The electromagnetic force, the weak interaction, and the strong interaction are all significantly stronger than gravity, which is by far the weakest of the four fundamental interactions.
As a result, it has no appreciable impact on subatomic particle level phenomena. However, at the macroscopic level, gravity is the most important interaction between objects and governs the motion of planets, stars, galaxies, and even light.
Therefore, The distance between the objects' centers and The amount of matter in the objects are two characteristics determine the strength of the gravitational force between two objects.
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What is the mole ratio between FeCl3 and Fe(C5H7O3)3 ?
Answers
Answer: 162.2 g FeCl3. mL of soln = 0.07028 mol FeCl3x ... mol FeCl3 = mol Fe(OH)3 = 0.01291 mol ... (a) MaVa = MbVb since HCl and KOH react in a 1:1 molar ratio.
Explanation:
nkkljihghjhytuyftghvnvm
jkhjkhjkh
Answers
Answer:
seriously ....,........
I don't like chemistry
element Q,X, and Z are in the same group on the periodic table and are listed in order of increasing atomic number.The melting point of element Q is -219 Celsius and the melting point of element Z is -7 celsius. Which temperature is closest to the melting point of element X
Answers
Answer:
Very low ionization energy: metal bonds easily: group 1, or maybe 2 low melting.
Explanation:
What is the mass/volume percent of a solution containing 32.6g of CaCl2 in 375mL of water?
Answers
Sắp xếp 4 axit sau theo thứ tự tính axit tăng dần:
CH3-CH2-CH2-COOH (1), CH3-CH2-CHCl-COOH (2)
CH3-CHCl-CH2-COOH (3), CH2Cl-CH2-CH2-COOH (4
Answers
(2)>(3)>(4)>(1)
Given: 800 mL of 2.5 M NaCl. Find grams of NaCl needed
Answers
Answer:
Answer: molar mass of NaCl is 58.5 gm/mol. This refers to the fact that 1 mole of NaCl weighs 58.5 gram.
Explanation:
A \pu{1.60 g}1.60 g1, point, 60, space, g calcium supplement contains 37.8\%37.8%37, point, 8, percent \ce{Ca}CaC, a by mass. The calcium is present in the supplement as \ce{CaCO3}(s)CaCOX 3 (s) (molar mass \pu{100.09 g/mol}100.09 g/mol100, point, 09, space, g, slash, m, o, l). How many grams of \ce{CaCO3}(s)CaCOX 3 (s) are in the calcium supplement?
Answers
A 1.60 g calcium supplement that contains 37.8% Ca by mass, contains 1.51 g of CaCO₃.
We want to calculate the mass of CaCO₃ in a 1.60 g supplement. We need to consider the following relationships.
The mass percent of Ca is 37.8%, that is, there are 37.8 g of Ca every 100 g of supplement.The molar mass of Ca is 40.08 g/mol.The molar ratio of Ca to CaCO₃ is 1:1.The molar mass of CaCO₃ is 100.09 g/mol.[tex]1.60gSup \times \frac{37.8gCa}{100gSup} \times \frac{1molCa}{40.08gCa} \times \frac{1molCaCO_3}{1molCa} \times \frac{100.09gCaCO_3}{1molCaCO_3} = 1.51gCaCO_3[/tex]
A 1.60 g calcium supplement that contains 37.8% Ca by mass, contains 1.51 g of CaCO₃.
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A 1.60 g calcium supplement contains 37.8% Ca by mass. The calcium is present in the supplement as CaCO₃(s) (molar mass 100.09 g/mol). How many grams of CaCO₃(s) are in the calcium supplement?
How many molecules of aspartame are present in 1.00 mg of aspartame?
Answers
Answer:
0.2 x 10^19
Explanation:
Convert 21 grams of radon into atoms of radon.
Answers
Answer:
The atomic mass of radon is 222.
Explanation:
. That means that one mole of radon weighs 222 grams (222 grams/moles). We can therefore make the following equation:
Grams × (1/222) = Moles of Radon
An exothermic reaction releases 86.5 kJ. How many kilocalories of
energy are released?
Answers
How does the Earth move within the Milky Way?
Answers
Answer:
The answer is in the explanation
(PLS VOTE ME AS BRAINLIEST!!!!!!!!!!!!!)
Explanation:
As Earth rotates on its axis, it orbits the sun, which orbits the center of the Milky Way, which itself is barreling through space.
giving brainly for correct answer! :)
Answers
Answer:
Mass is the amount of matter in an object
Answer:
Mass
Explanation:
matter is weighed by the mass of an object
which best describes how heat energy moves within the system?
Answers
Answer: B
Heat always travels from warmer areas to cooler areas in the form of radiation or convection currents due to the temperature difference. You could kind of think of this movement like diffusion: travelling from a higher concentration to a lower one (if you take biology). This is how a gas heats up a pan on the stove or a radiator warms a room
When performing an experiment, the following footwear is best
Answers
Answer:
sneakers
Explanation:
Answer:
closed toe shoe
Explanation:
becusae if a cemcal spills it cant hurt your feet
The electron configuration of an element is shown below.
1s22s22p63s23p6
Name the group this element belongs to in the periodic table and explain your answer.
Based on the electron configuration, write one chemical property of this element.
Answers
The element belongs to group 18 and the element is chemically inert.
What is electron configuration?The term electron configuration refers to the arrangement of electrons in an atom. The electron configuration of an atom can show the group to which it belongs in the periodic table.
Given the configuration, 1s22s22p63s23p6 the element belongs to group 18 and the element is chemically inert.
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what is a nucleus and what are the functions?
Answers
You are given a water-soluble compound X. Describe how you would determine whether it is an electrolyte or a nonelectrolyte. If it is an electrolyte, how would you determine whether it is strong or weak?
Answers
If the compound contains a metal cation or an ammonium cation, then the compound is ionic. Otherwise it is a molecular compound. Ionic compounds that dissociate completely in water are strong electrolytes. ... Molecular compounds that are weak acids are weak electrolytes.
CORRECT ME IF IM WRONG
HOPE IT HELPS:(
An electrolyte substances which, when dissolved in aqueous solution, dissociates into cations (+ ions) and anions (- ions).
Electrolytes can either be a weak or strong electrolyte depending on whether they can dissociate partially or completely.
Therefore, regarding the water-soluble compound X:
it is an electrolyte if it dissociates into its respective ions in an aqueous solutionThe compound is a weak or strong electrolyte depending on whether it dissociates partially or completely.Learn more about electrolytes at: https://brainly.com/question/14566383
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Mixture of a 25.00 mL aliquot of the sample solution with 5.00 mL of a 0.250 ppm warfarin standard yielded a solution with an intensity of 670. Calculate the percentage of warfarin in the sample.
Answers
Answer:
750
Explanation:
Select all the correct answers.
To formulate hypotheses and construct theories, astronomers analyze data. This analysis helps them find trends that may exist. Which two statements does the data in this table support? If you’re not sure, take a guess.
A. The farther a planet is from the Sun, the longer its orbital period is.
B. Planets with a greater diameter have longer days.
C. The closer a planet is to the Sun, the greater its axial tilt is.
D. Planets with greater mass tend to have more moons.
Answers
Answer: A. The farther a planet is from the Sun, the longer its orbital period is, and D. Planets with greater mass tend to have more moons.
Explanation: trust
In order to complete a reaction, a chemist needs to react 4 moles of aluminum atoms with 3 moles of oxygen molecules. How many grams of aluminum would be required to make this happen?
Answers
Answer:
4 Al + 3 O2 → 2 Al2O3
To react with 4 moles of Al, (3×32) g oxygen is required.
So, to react with 2.4 moles of Al, {(3×32)/4} × 2.4 = 57.6 g oxygen is required.
Hope this helps.
