Answer:
C. Dipole
Explanation:
When a molecule is unevenly charged but overall neutral, for example, one atom has a negative charge, and one has a positive charge, they balance each other out when they bond and are known as a polar molecule. Dipole just means 2 poles (positive and negative).
Why are stars special sources of light?(2 points)
They are made of gas.
O They twinkle in the night sky.
They get their light from the sun.
They give off their own light energy.
Answer:
They give off their own light energy
Explanation:
I'm taking astronomy and I answered this questions not too long ago
Identify the reaction type:
Si(s) + Cl2(g)
- SiCl4(1)
synthesis
O decomposition
single replacement
double replacement (or neutralization)
O combustion
Answer:serch it up i found it on the second website
Explanation:
Chemistry help needed! (picture included)
Answer:
Use a fine, crystalline solute and stir vigorously
Explanation:
It is better if it is fine instead of coarse since this will provide more surface area. If there is more surface area, the crystals will dissolve faster.
You also have to stir the solution vigorously to keep all of the crystals exposed to the solvent.
Answer:
Use a fine, crystalline solute and stir vigorously
Explanation:
Hope this helps
Question 2
Which of the following stages of the water cycle is related to plants undergoing cellular respiration?
a
infiltration
b
transpiration
c
condensation
d
evaporation
If 20g of fe react with 5l of chlorine gas at stp, how many grams of iron 3 chloride can be produced
Answer:
.........................................
Explanation:
plsss help ive been stuck on this for a week
Answer:
Thomson's atom model.
Explanation:
His model is the plum pudding model of an atom. There are negatively charged subatomic particles or electrons placed within positively charged matter.
Hope this helps!
HELP ASAP.
If correct, will give brainliest.
Answer:A
Explanation:
potential energy is stored energy and so the only option that isn’t moving or using energy is a
which statement about atoms is correct
A atoms contain protons and electrons in the nucleus
B Neutrons are negatively charged
c protons are positively charged
D the nucleon number is the number of neutrons
Answer:Protons are positively charged is the correct statement about an atom
I've also corrected the other statements
Atoms contain protons and neutrons in their nucleus
Neutrons posses no charge and are neutral
The nucleon number is the total number of protons and neutrons in a nucleus
Can you help me please
Answer:
Explanation:
h
The Olympian swam 200 meters in 20 seconds.
1) velocity
2) acceleration
3) speed
Answer: velocity
Explanation:
Elements with a high ionization energy lose electrons easily (True or False).
Answer:
False
Explanation:
From point A to point B, the car will . From point B to point C, the car will . Assuming the washer on the car is not blocked by the book, once the car hits the book, the washer will still have . This experimental design will examine Newton’s law.
Answer:
Accelerate, Have Constant velocity, Velocity, and First
Explanation:
Got it right on edge. have a wonderful day!!!
From point A to point B, the car will . From point B to point C, the car will assuming the washer on the car is not blocked . It will examine Newton’s law will be "Accelerate, Have Constant velocity, Velocity, and First."
What is Newton’s law ?The link between an object's motion with even the forces acting on it is outlined by Newton's laws of motion, which were three fundamental principles of classical mechanics.
What is velocity?The displacement of the item in one unit of time would be the definition of velocity.
Therefore, from point A to point B, the car will . From point B to point C, the car will assuming the washer on the car is not blocked . It will examine Newton’s law will be "Accelerate, Have Constant velocity, Velocity, and First."
To know more Newton’s law and Velocity
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HELP ME PLEASE ILL GIVE EC AND BRAINLESTPhotosynthesis
Matter and Energy
Claim-Evidence-Reasoning
Name:
Date:
Scenario
Below is the equation of photosynthesis. Photosynthesis is a process that takes place in plants.
Notice that CO, and water are converted into sugar and oxygen.
External Data
600,
6 H,0
Water
light Cº,
+
602
+
Oxygen
ton Dede
Sugar
Prompt:
When you go home Dnight, your mother asks you to explain to her what happens during the
process of photosynthesis. Your mother is a science teacher, so make sure you use scientific terms
to give her a scienífic explanation of how energy is stored as sugar in plants through
photosynthesis.
I
Claim:
Evidence:
Reasoning:
Rebuttal:
Answer:
photosynthesis happens when spring is happening because of the pollen and soil
Explanation:
If 0.25 moles of KBr is dissolved in 0.5 liters of
heavy water which has a mass of 1,100 grams
per liter, what is the concentration?
Answer in units of m (molal).
Answer:
[KBr] = 454.5 m
Explanation:
m is a sort of concentration that indicates the moles of solute which are contianed in 1kg of solvent.
In this case, the moles of solute are 0.25 moles.
Let's determine the mass of solvent in kg.
Density of heavy water, solvent, is 1.1 g/L and our volume is 0.5L.
1.1 g = mass of solvent / 0.5L, according to density.
mass of solvent = 0.5L . 1.1g/L = 0.55 g
We convert the mass to kg → 0.55 g . 1kg /1000g = 5.5×10⁻⁴ kg
m = mol/kg → 0.25 mol /5.5×10⁻⁴ kg = 454.5 m
Which set of coefficients will balance this chemical equation?
__C2H4(g) + __O2(g) → 2CO2(g) + 2H2O(g)
Answer:
Explanation:
USE UR PERDICIRTON TABLE
Explain what you discovered from the Simulation about why food coloring spreads faster in warmer water.
Answer:
The food colouring mixes through the hot water faster than it mixes with the cold water, this is because in hot water the water molecule have more energy and are moving faster than the molecules of cold water .This makes it easier for the food colouring to get mixed quickly through the hot water.
Hurry hurry hurry plz plz
Jonathan’s claim: light is always the same, even when it is emitted by a different light sources(light the sun and a light bulb)
Question 1: do you agree or disagree with his claim?
Question 2: what evidence from your observations within our lesson prove your point?
Answer:
Jonathan’s claim is right.
Explanation:
Jonathan’s claim is right because photons emitted by both sources i.e. sun and the light bulb has the same wavelength which looks practically identical to each other. But some differences in the light spectrum of sun and a light bulb i. e. light bulb has more infrared output than visible and ultraviolet while on the other hand, sun has more visible light than infrared and ultraviolet radiations so we can say that Jonathan's claim is right about the emission of light.
STOICHEMTRY
A-C PLEASE
Answer:
1=the 77 or and 57
Explanation:
what are waves.
.
/.....................
In which scenario does radiation occur? A B C
Answer:
if it has anything to do with plutonuim, uranium , or burilium its radiation
Explanation:
those elements emit radiation
Answer:
B: drying towels at the beach
Explanation:
I had this on my EDG assignment for radiation and I got it correct.
I hope this is what you were looking for
how many grams of Al(no2)3 should be added to 1.3L of water to prepare a 2.0M solution
Answer: 429 grams of [tex]Al(NO_2)_3[/tex] should be added to 1.3 L of water to prepare 2.0 M solution
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
[tex]Molarity=\frac{n}{V_s}[/tex]
where,
n = moles of solute [tex]Al(NO_2)_3[/tex] = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{xg}{165g/mol}[/tex]
[tex]V_s[/tex] = volume of solution in Liters
Now put all the given values in the formula of molarity, we get
[tex]2.0M=\frac{xg}{165g/mol\times 1.3L}[/tex]
[tex]x=429g[/tex]
Therefore, 429 grams of [tex]Al(NO_2)_3[/tex] should be added to 1.3 L of water to prepare 2.0 M solution
In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by _____.
A) hydrogen bonds
B) nonpolar covalent bonds
C) polar covalent bonds
D) ionic bonds
Answer:
C) polar covalent bonds
Explanation:
Polar covalent bonding can be regarded as a chemical bond that involves a pair of electrons which is
unequally shared between two atoms.
The electron are not shared equally as a result of one of the atom spending more time with the electron compare with the other atom. It is one whereby atoms having different electronegativities involves themselves in sharing electrons in a covalent bond
Environmental factors can influence the way genes are ________________.
Answer:
Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.
Explanation:
kinetic energy???
short version please
Answer:
Kinetic energy, form of energy that an object or a particle has by reason of its motion.
Explanation:
a shorter one
Answer:
is the energy of a body due to its motion pls mark me us briansit it means lot to me follow for more answer
is eye drops a asid base or neutral?
plzz help mee
Answer:
Its Neutral
Explanation:
I got this right in a quiz. I hope this helps!!
The sun radiates energy towards the ______ surface and some of this radiant energy is in the form of ________.
Answer:
Earth; heat.
Explanation:
Radiation can be defined as the flow, transmission or emission of energy in the form of atomic and subatomic particles and waves through a material medium or space.
Solar radiation is a form of electromagnetic radiation emitted by the sun on the earth's surface as ultraviolet, infrared and visible light.
Hence, the sun radiates energy towards the earth surface and some of this radiant energy is in the form of heat. Radiation is generally considered to be the least important mode of the transportation of heat from one point to another in planet earth.
D) 7
20 points
2. How does the concept of conservation of mass apply to chemical
reactions? (hint: the Law of Conservation of Mass) *
a) the reactants and products have exactly the same molecules
b) the change in the amount of matter is equal to the change in energy
o
c) the reactants and products have exactly the same atoms
d) the change in the amount of matter is only a small percentage of the total mass
W
3. How many Oxygen (O) atoms are in the chemical formula below?. *
Answer:
the reactants and products have have exactly the same molecules
The reactants and products have exactly the same atoms, therefore the concept of conservation of mass applies to chemical reactions. Therefore, option (b) is correct.
What is the law of conservation of matter?According to this law, matter can neither be created nor destroyed, but can be converted from one form to another. So the same number and type of atoms in a chemical reaction before and after the chemical change are present.
The initial substances or reactants change into different substances or products in any chemical change. Both the reactants and products are made up of atoms as all matter is made up of atoms.
The matter is conserved as the equal number of atoms of each element in the reactants and products, and the total mass of the reactants must equal the total mass of the products.
The law of conservation of mass can be only followed in a chemical reaction if the reactants and products have exactly the same atoms.
Learn more about the law of conservation of matter, here:
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I am very dull and brittle, I can't transfer thermal energy very well, and I tend to be a gas. I must be a ...
a
metal
b
nonmetal
c
metalloid
d
noble gas
Answer and Explanation:
A nonmetal is the answer.
Cause they are dull and brittle, and can be a gas at times at room temperature.
#teamtrees #PAW (Plant And Water)
What is an important effect of gravity?
Answer:
pulling objects with mass closer to each other
Explanation:
that is the only role of gravity
What is the energy of a photon of violet light with a frequency of 7.79*[tex]10^{14}[/tex] [tex]s^{-1}[/tex]? (answer in joules)
Answer:
[tex]E=5.16\times 10^{-19}\ J[/tex]
Explanation:
Given that,
The frequency of violet light, [tex]f=7.79\times 10^{14}\ Hz[/tex]
We need to find the energy of a photon. The formula for the energy of a photon is given by :
[tex]E=hf\\\\E=6.63\times 10^{-34}\times 7.79\times 10^{14}\\\\E=5.16\times 10^{-19}\ J[/tex]
So, the energy of a photon is equal to [tex]5.16\times 10^{-19}\ J[/tex].