Answer:
When the surface water is warm, the storm sucks up heat energy from the water, just like a straw sucks up a liquid. This creates moisture in the air. If wind conditions are right, the storm becomes a hurricane. This heat energy is the fuel for the storm.
Explanation:
I hope this can help you!
if you have 5235 pennies how many grams would they weigh
In Latin, the word arthropod means jointed foot.
Beside jointed legs and segmented body , what other characteristic is common to arthropods?
Answer: a pair of antennae
Explanation:
Which two types of chemical reactions do not always occur? What, specifically, do you need to do to see if they occur or not
Answer:
Molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. Molecules must collide with the proper orientation. A collision that meets these two criteria, and that results in a chemical reaction, is known as a successful collision or an effective collision.
which statement best describes the result of meiosis?
A. it produces body cells
B. It causes alleles to deform.
C.It prevents genetic mutation
D. it produces reproductive cells.
Balance the Chemical Equations
MgF2 + Li2CO3---> MgCO3 + LiF
Please Help
Answer:
see explanation
Explanation:
Given: MgF₂ + Li₂CO₃ => MgCO₃ + 2LiF
simple balance ... just add coefficient of '2' before LiF
PLLLLLLLLLLLLLLLLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELPPPPPPPPPP MEEEEEEEEEEE
THXXX
Answer:
Option C: Na2C2O4 + Pb(NO3)_2 = PbC2O4 + 2NaNO3
Explanation:
Na2C2O4 + Pb(NO3)_2
For it to be a double placement reaction, the cations and a ions will switch places in the product.
Now, on this reaction side;
Cations are; Na+ and Pb+
Anions are; C2O4^(-) and (NO3)^(-)
The product side will yield;
Na2C2O4 + Pb(NO3)_2 = 2NaNO3 + PbC2O4
What’s the answer? Lol
Answer:
its in your- your- it- your- ITS IN YOUR IMAGINATIONNNNNNNNNNNNNNNNNNNNNN
Explanation:
Answer:evaporates.
Explanation:Due to this absorption of energy the hydrogen bonds connecting water molecules to one another will break. The molecules are now in the gaseous state; this is called water vapour. The phase change from liquid to vapour is called evaporation. During evaporation a molecule of water absorbs latent heat.
The corn crop in an area is prone to infestation by larvae from moths that feed on the cornstalks and ears of corn. The techniques used by two farmers to protect the corn crop are described below.
Technique A: Sprayed his corn crop with an insecticide. The insecticide is known to kill all honeybee, butterfly, and moth larvae.
Technique B: Used a genetically modified variety of corn. The plant produces an insecticide which selectively kills only the moth larvae as it feeds on the corn.
Which technique is likely to have less of an impact on the environment?
Technique B because it preserves the harmless insects and targets only the moth larvae
Technique A because insecticide use is better for preserving the environment
Technique B because it may help humans who consume corn to fight bacA genetically engineered corn plant is approved for agricultural use.
Technique A because it kills a broader variety of insects to protect the corn
Answer:
a
Explanation:
An empty beaker and watch glass has a mass of 120.15g. Exactly 25.00 mL of an unknown liquid was added to this beaker and the mass was found. The mass of the beaker, liquid, and cover was 145.50g. What is the density of the liquid?
Answer:
1.014g/mL
Explanation:
Given parameters:
Mass of beaker and watch glass = 120.15g
Volume of unknown liquid = 25mL
Mass of beaker + liquid + cover = 145.50g
Unknown:
Density of the liquid = ?
Solution:
Density is the mass per unit volume of a substance.
It is mathematically expressed as:
Density = [tex]\frac{mass}{volume}[/tex]
Mass of liquid = Mass of beaker + liquid + cover - Mass of beaker and watch glass
Mass of liquid = 145.50g - 120.15g = 25.35g
So;
Density = [tex]\frac{25.35}{25}[/tex] = 1.014g/mL
The least active of the following five elements in the Halogen Family is
a. 53I
b. 9F
c. 85At
d. 35Br
e. 17Cl
Answer:
c
Explanation:
Answer:
C. c c. ccccccccccc
Explanation:
cccccccccc
A cell is a system of parts that work together to carry out basic life processes. An animal is also a system of parts that work together to carry out basic life processes. Match each organ or organ system with the cell part that has a similar function.
Answer: the cell wall is the skeletal system
The nucleus is the brain
The mitochondria is the digestive system
The cell membrane is the skin
Explanation:
how does a swamp act as a natural water treatment plant which humans should preserve
What was the biggest obstacle for the theory of continental drift to overcome?
1. no answer for how the continents moved
2. Wegener wrote all his work in a language no one could read
3. land bridges had better evidence
4. there was no concrete evidence for continental drift
PICK ONE
Answer: The answer Is A: No answer for how the continents moved.
What is this and please explain why it is :)
Answer:
it's A
Explanation:
It's a because you started with electricity as your source of energy and the new turn it into magnetical energy
Tuliskan persamaan tetapan kesetimbangan untuk reaksi-reaksi berikut a. Fe3+(aq) + SCN– (aq) ↔ FeSCN3+(aq) b. 3Fe(s) + 4H2O(g) ↔ Fe3O4(s) + 4H2(g)
Answer:
a. [tex]K_c = \dfrac{[ FeSCN^{3+}_{(aq)}] }{[Fe^{3+}_{(aq)}] [SCN^-_{(aq)}]}[/tex]
b. [tex]K_p = \dfrac{[H_2]^4}{[H_2O]^4}[/tex]
Explanation:
Untuk semua jenis reaksi umum:
[tex]aA + bB\iff cC + dD[/tex]
Konstanta kesetimbangan [tex]K_c = \dfrac{[C]^c [D]^d}{[A]^a[B]^b}[/tex]
Dari pertanyaan yang diberikan:
a. [tex]Fe3^+_{(aq)} + SCN^-_{ (aq)} \iff FeSCN^{3+}_{(aq) }[/tex]
Konstanta kesetimbangan:
[tex]K_c = \dfrac{[ FeSCN^{3+}_{(aq)}] }{[Fe^{3+}_{(aq)}] [SCN^-_{(aq)}]}[/tex]
b. [tex]3Fe_{(s)} + 4H_2O_{(g)} \iff Fe_3O_4_{(s)} + 4H_{2(g)}[/tex]
Konstanta kesetimbangan untuk tekanan parsial [tex]K_p[/tex]
[tex]K_p = \dfrac{[H_2]^4}{[H_2O]^4}[/tex]
Karena Fe3O4 (s) hadir sebagai padatan.
3. List three structures found in
plant cells that are not in ani-
mal cells. (7.1.b)
HELP PLZ ITS DUE SOON!!
A student visits the beach during a very hot day. She steps on the sand and jumps because it is so hot.
Which type of heat transfer is demonstrated by the sand in this example?
transmission
radiation
conduction
convection
This is science but I didn't see it where it says to choose subject.
Answer:
conduction
Explanation:
because she touched it with her foot
I need help ASAP pls
Answer:
it should be option D
Explanation:
Because the frequency of a wave is directly proportional to the energy of a wave
Which statement below best describes the current model of the atom based on Rutherford’s gold foil experiment?
Answer:
where are the statements??
En la siguiente ecuación se observa la obtención de oxígeno y cloruro de potasio a partir del clorato de potasio 2KClO3------>2KCl + 3O2 de la ecuación puede deducirse
Answer:
Ver respuesta mas abajo
Explanation:
Tu pregunta no es muy clara pero te expondré lo que se puede deducir de esa ecuación solo con esos datos.
Primero, anotemos nuevamente la ecuación:
2KClO₃ --------> 2KCl + 3O₂
Asi como está escrita la ecuación se deduce lo siguiente:
1. Es una ecuación de descomposición. Esto significa que un compuesto o molécula se descompuso o se separó, en sus moléculas o átomos elementales para producir 2 o más átomos y/o moléculas. En esta ecuación claramente vemos que el clorato de potasio, se separó en dos moléculas distintas, pero conservando sus mismos elementos, por un lado el cloruro de potasio (KCl) y por el otro oxígeno molecular. Ahora bien, una reacción de descomposición no se da por si solo; generalmente este tipo de reacciones se dan a lugar en presencia de calor o electricidad. Y esto da a lugar a la siguiente deducción.
2. Es una reacción de tipo endotérmica. Es decir, una reacción que absorbe calor para llevarse a cabo. El KClO₃ por si solo y colocado en un simple beaker o recipiente cualquiera no se va a descomponer, si no tiene influencia de algún tipo de catalizador o agente externo que permita su descomposición. En ese sentido, el calor o la electricidad son dos agentes que influyen mucho en la descomposición de este compuesto, y al usar el calor como agente para que la reacción ocurra, el compuesto lo absorbe y se descompone. Por ende es una reacción endotérmica.
3. El radio de moles entre reactivo y un producto es el mismo. En este caso podemos observar como 2 moles de reactivo inicial (KClO₃) se descompone y genera otros 2 moles de producto, en este caso, KCl, lo que significa que el radio molar entre estos dos compuestos es 2:2 o 1:1, lo que significa que para efectos de calcular moles prácticos a partir de cierta masa, este dato nos puede ayudar a determinar los moles de los productos y posteriormente la masa.
Si necesitas alguna otra deducción o completar la pregunta si hace falta algo, posteala en una nueva pregunta.
Espero te ayude.
A train travels 200 km/hr. How much distance will the train be from the station in 2.5 hours?
Answer:
500
Explanation:
200 multiplied by 2.5
Answer:
500 km
Explanation:
2x200 is 400. 0.5 of 200 is 100, 400+100=500
4. Identify each substance in the following word equation as a reactant or a product
limestone heat lime + carbon dioxide.
5. What is the difference between an exothermic and endothermic reaction?
6. Sodium salicylate is made from carbon dioxide and sodium phenoxide. Identify each
of these substances as a reactant or a product.
Pllssssssssssssss
Explanation:
4. limestone heat lime + carbon dioxide
The reactants in this expression above is limestone
The products of the reaction is carbon dioxide and lime
Reactant is the species that gives the product and it is usually found on the left hand side of the expression.
The product is the substance on the right hand side of the expression that forms through the experiment.
Heat is used to facilitate the reaction.
5. An exothermic reaction is a reaction in which heat is given off.
An endothermic reaction is a reaction in which heat is absorbed in the process.
An exothermic reaction is always warmer after the reaction whereas an endothermic reaction is colder at the end of the reaction.
6. Sodium salicylate is made from carbon dioxide and sodium phenoxide.
The reactants are:
Carbon dioxide and sodium phenoxide
The product is:
Sodium salicylate
How many moles are in 170 grams of H2O2?
O 0.284 mol H202
O 0.385 mol H202
O 0.500 mol H2O2
O 0.730 mol H2O2
Please help!!!
5.0 mol H₂O₂
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
170 g H₂O₂
Step 2: Identify Conversions
Molar Mass of H - 1.01 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of H₂O₂ - 2(1.01) + 2(16.00) = 34.02 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 170 \ g \ H_2O_2(\frac{1 \ mol \ H_2O_2}{34.02 \ g \ H_2O_2})[/tex]Divide: [tex]\displaystyle 4.99706 \ mol \ H_2O_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
4.99706 mol H₂O₂ ≈ 5.0 mol H₂O₂
Answer:
C
Explanation:
Need help with 6th grade science homework PLZ HELP ASAP
Answer:
whaa is it
Explanation:
Answer:
There's nothing. What do you need help with?
Explanation:
Apply Why does a box on the seat of a car
slide around on the seat when the car speeds
up, slows down, or turns a corner
Answer:
im confused on what you mean
Explanation:
Budeme stát na lodi s plachtou, na klidné hladině bez větru a někoho napadne foukat velkým větrákem do plachet lodi.
Answer:
english?
Explanation:
Determine the number of atoms in 3.54 mol Mn.
2.13x10²⁴ atoms are the number of atoms in 3.54 mol of Mn. The atom serves as the fundamental unit of chemistry.
What is atom?The smallest unit of matter that may be divided without producing electrically charged particles is the atom. It is also the smallest piece of substance with chemical element-like characteristics. As a result, the atom serves as the fundamental unit of chemistry.
Space makes up the majority of an atom. The rest is made up of a cloud of electrons with negative charges surrounding a positive charge nucleus made up of protons and neutrons.
Number of atom = number of mole × 6.022×10²³
Number of atom = 3.54 × 6.022×10²³
= 2.13x10²⁴ atoms
Therefore, 2.13x10²⁴ atoms are the number of atoms in 3.54 mol of Mn.
To know more about atom, here:
https://brainly.com/question/29712157
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What is the difference between the spectrum of hydrogen and the spectrum of sunlight
will mark brainliest
Answer:
The hydrogen spectrum is an important piece of evidence to show the quantized electronic structure of an atom. ... It results in the emission of electromagnetic radiation initiated by the energetically excited hydrogen atoms. The hydrogen emission spectrum comprises radiation of discrete frequencies.
The spectrum starts with red light, with a wavelength of 700 nanometers (7,000 angstroms), at the top. ... It spans the range of visible light colours, including orange and yellow and green, and ends at the bottom with blue and violet colours with a wavelength of 400 nm (4,000 angstroms).
Explanation:
Hydrogen molecules are first broken up into hydrogen atoms (hence the atomic hydrogen emission spectrum) and electrons are then promoted into higher energy levels. Suppose a particular electron is excited into the third energy level. It would tend to lose energy again by falling back down to a lower level.
The spectrum of the Sun appears as a continuous spectrum and is frequently represented as shown below. This type of spectrum is called an emission spectrum because what you are seeing is the direct radiation emitted by the source.
What is the molecular formula of S2N if it was simplified by a factor of 2?
The molecular formula : = S₄N₂
Further explanationGiven
The emprirical formula : S₂N
Required
The molecular formula
Solution
The empirical formula is the smallest comparison of atoms of compound forming elements.
A molecular formula is a formula that shows the number of atomic elements that make up a compound.
(empirical formula) n = molecular formula
A factor of 2⇒n=2
(S₂N)₂=molecular formula
= S₄N₂
