Answer:
sentence B.
Explanation:
The number of energy levels increases as you move down a group as the number of electrons increases. Each subsequent energy level is further from the nucleus than the last. Therefore, the atomic radius increases as the group and energy levels increase.
Answer: B
Explanation: I just took it trust me and keep up the work
explain how you know the numbers of atoms in your formula. Carbon Monoxide
Explanation:
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This is a science question.
What is the acceleration of this helicopter?
Answer:
7m/s
Explanation:
Is the acceleration of the helicopter
Would you expect manganese(II) oxide, MnO, to react more readily with HF(aq) or NaOH(aq)?
Answer:
NaOH(aq)
Explanation:
NaOH(aq) is known to precipitate Mn^2+ ions according to the following reaction; Mn^2+(aq)+2OH^−(aq)↽−−⇀Mn(OH)2(s)
Hence, manganese(II) oxide reacts more readily with NaOH(aq) under ordinary conditions precipitating the metal hydroxide solid. This is one of the characteristic reactions of Mn^2+.
Select all the correct answers.
Based on the enthalpy changes given for the reactions, which reactions are endothermic?
Answer:
The reaction for which ΔH is positive are endothermic reactions. Explanation: The energy changes occur during the bonds formation and bonds breaking
Everyone has a laughing place, The trouble is most people don't take the time to look for it.
true
or
false
Answer:
True
Explanation:
Answer:
True
Explanation:
Most people stick to what they know and don't look for a laughing place.
Question 1: A blocked-off meander eventually becomes
A)an oxbow lake.
B)part of the stream again
C) alluvial fan
D)rejuvenated.
Question 2: As the velocity of a stream decreases, which transported particle size would settle to the stream’s bottom first?
A) slit
B) clay
C)pebble
D) sand
Forces of attraction between particles increase as the particles move faster and
farther apart.
True
False
Answer:
false
Explanation:
as the particles move further apart their forces of attraction become qeak
What is the charge of this atom?
65 protons
60 electrons
A)-5
B)+5
C)0
Answer:
B. +5
Explanation:
Help! Please help in a hurry!
Answer:
Expiremental group for -first one. Second one-2
Explanation:
I Had Those QuestIons On mY tEsttt!!
Which expression is equal to the number of grams (g) in 2.43 kilograms (kg)?
2.43 kilograms times StartFraction 1000 grams over 1 kilogram EndFraction.
2.43 grams times StartFraction 1 kilogram over 1000 grams EndFraction.
StartFraction 1 over 2.43 kilograms EndFraction times StartFraction 1000 grams over 1 kilogram EndFraction.
StartFraction 1 over 2.43 kilograms EndFraction times StartFraction 1 kilogram over 1000 grams EndFraction.
Answer:
A. 2.43 kg x 1000 g/1 kg
Explanation:
I said so
How is stoichiometry used to calculate energy absorbed when a mass of liquid boils?
Answer:
b
Explanation:
Stoichiometry is used to calculate energy absorbed when a mass of liquid boils is Grams liquid xmol/gx∆Hvap.
What is stoichiometry?Stoichiometry is a branch of science that deals with the relationship that occur between the products and reactants in a reaction base on the mass and volume of substances involved.
Therefore, Stoichiometry is used to calculate energy absorbed when a mass of liquid boils is Grams liquid xmol/gx∆Hvap.
Learn more about stoichiometry below.
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what further observation led mendeleev to create the periodic table
Answer:
;,knbbbknnbkhbln bhbj k; b; m j
Explanation:
I need help, lots of points to you, please give genuine answers, will mark brainliest.
Answer:
this is hard
Explanation:
Describe how sodium (Na) and chlorine (Cl) interact to form an ionic compound. Specifically, what is happening to an electron?
What is the measurement from the line of origin to the crest?
A. Trough
B. Amplitude
C. Crest
D. Wavelength
Equilibrium reactions will go back and forth depending on how many reactants or products there are.
False or True
A cell is classified as a __________________ if the genetic material is inside the nucleus.
Identify the type of reaction depicted below:
2SO2(g)
+
O2(g) --> 2SO3(g)
Answer:
Combination reaction
Explanation:
In Chemistry, elements and compounds are involved in a process called chemical reactions, which are of different types namely: combination, decomposition, double replacement, combustion etc. A combination reaction is that reaction in which two or more substances called the REACTANTS combine together to form a single new substance called the PRODUCT.
In this case, a reaction is depicted as follows:
2SO2(g) + O2(g) --> 2SO3(g)
In this reaction, compound SO2 combines chemically with element O2 to form a single new compound SO3. Hence, this is a type of COMBINATION REACTION.
Etiquetas de productos de casa formula química, nombre de la formula, y el nombre del producto. Ejemplo NaCL, Cloruro de sodio, sal.
Answer:
Azucar, bicarbonato de sodio, lavandina, vinagre, amoniaco.
Explanation:
Podemos numerar estos compuestos
Azucar → Sacarosa → C₁₂H₂₂O₁₁
Lavandina → Hipoclorito de sodio → NaClO
Vinagre → Ácido acético → CH₃COOH
Bicarbonato de sodio → NaHCO₃
Amoníaco → NH₃
Speed of 5km. Pls help
Answer:
It's either A. or B. Im going with B. since the person is walking a constant speed
Explanation:
acceleration is basically when someone or something is increasing in speed
what are some natural resources that are limited on earth
Answer:
oil, ores, and fossils.
Explain the importance of valence electrons in chemical bonding.
Answer:
Explanation: Understanding valence electrons is key to understanding chemical bonding. Delocalized valence electrons produce metallic bonds (bonds between atoms of metals) which give metals unique properties such as conductivity and ductility (draw metal into wires)
A transformer has 150 turns in its primary coil and 50 turns in its secondary coil. If the input voltage is 12 V, what is the output voltage?
Answer:
36V
Explanation:
Given parameters:
Number of turns in primary coil = 150turns
Secondary coil turn = 50turns.
Input voltage = 12V
Unknown:
Output voltage = ?
Solution:
For this transformer problem, we use the expression;
[tex]\frac{N_{s} }{N_{p} }[/tex] = [tex]\frac{V_{s} }{V_{p} }[/tex]
Insert the parameters and solve;
Ns is the number of secondary turns
Np is the number of primary turns
Vs is the secondary voltage
Vp is the secondary voltage
Insert the parameters and solve;
[tex]\frac{150}{50}[/tex] = Output voltage / 12
Output voltage = 12 x 3 = 36V
To what pressure must a gas be compressed in order to get into a 3.00 cubic foot
tank the entire weight of a gas that occupies 400.0 cu. ft. at standard pressure?
Answer:
133.3atm
Explanation:
Given parameters:
Initial volume = 400ft³
Final volume = 3ft³
Initial pressure = 1atm
Unknown:
Final pressure = ?
Solution:
To solve this problem, we apply Boyle's law which states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".
Mathematically;
P₁V₁ = P₂V₂
P and V are pressure and volume
1 and 2 are initial and final states;
Insert parameters and solve;
1 x 400 = P₂ x 3
P₂ = 133.3atm
which of the following substances has a molar mass of 208 grams?
A. P2O5
B. BaCl2
C. AlCl3
D. MgCl2
Answer:
answer - a
Explanation:
please like and follow me
Answer:
The answer is A
Explanation:
I'm not 100% sure but, its probably A.
People that need these answers.
1. How does sweat get to the sweat glands?
A. capillaries
B. ducts
C. arteries
D. veins
2. What hormone helps us to react to danger?
A. pituitary
B. thymus
C. adrenaline
D. thyroxin
3.
How many glands are part of the endocrine system?
A. 6
B. 8
C. 2
D. 4
4. What gland is located in the middle of the forehead and regulates the growth of bones?
thyroid gland
pituitary gland
parathyroid gland
pineal gland
Answer:
cater pillars piutyiry 6 throid gland
Answer:
1. how does sweat get to the sweat glands
Sweat gets to the sweat glands by passing through ducts
2. what hormone helps us react to danger
Adrenaline
#. how many glands are part of the endocrine system?
8
4. What gland is located in the middle of the forehead and regulates the growth of bones?
The pituitary gland.
Explanation:
A
occurs when what the scientist expects changes how the results of an experiment are viewed?
A. conundrum
B. bias
C. impass
Answer:
conundrum
Explanation:
its not bias or impass
Water flows through a pipe at a rate of 620 gallons every 5 1/2 minutes expressed this rate of flow and cups per second
The rate of flow of Water flows through a pipe will be 30 cups per second.
What is the rate of flow?The distance covered by the particle or the body in an hour is called the rate of flow. It is a scalar quantity. It is the ratio of gallons to time.
We know that the speed formula
Rate of flow = Gallons/Time
Water flows through a pipe at a rate of 620 gallons every 5 1/2 minutes expressed at this rate of flow and cups per second.
We know that in one gallon, there are 16 cups.
5.5 minutes = 330 seconds
The rate of flow will be
Rate of flow = (620 x 16) / 330
Rate of flow = 30 cups per second
The rate of flow of Water flows through a pipe will be 30 cups per second.
More about the rate of flow link is given below.
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what is the molal freezing point of C6H6?
Answer: 4.90
Explanation: The molal freezing point constant of C6H6 is 4.90 and its melting point is 5.51∘C. A solution of 0.816 g of a compound A dissolved in 7.5 g of benzene freezes at 1.59∘C. Calculate molecular weight of compound A
Answer:
4.90
Explanation:
The molal freezing point of C6H6 is 4.90
Help please ASAP it’s due at 12:30 pm !!
Answer:
1. Trace fossil. 2. Petrification 3. Freezing 4. Mold
Explanation: