Answer:weathering and erosion
Please mark brainlyest
Explanation:
Answer:
b.weathering and erosion
Explanation:
Weathering and erosion shape rock formations.
In each term equation below a blank line shows one term missing the terms may be an elemental symbol a coefficient or a subscript decide which term would balance the equation write the missing term in the second column the. Determine the reactants third column and products forth column of the reaction some reactions may have only one reactant or product and other reactions may have only one reactant or product and other reactions may have multiple reactants or products write your answers in the spaces in the table the first reaction involves sodium chloride not sodium carbon and iodine
Answer:
1) Cl2 2 is missing
2) H H is missing
Explanation:
Which process created the gases of earth’s first atmosphere?
a.volcanic activity
b.weathering
c.photosynthesis
d.photolysis
Answer:
Volcanic Activity
Explanation:
Answer: A) Volcanic Activity
Answer the following question by studying the given
structure of the stoma
1)Name the atoms of element
2)In which group of the periodic table do these element lie?
Answer:
1) A. carbon B. oxygen
2) A. semi metal. B. Non- metal( gas)
Calculate the mass of each element in the
compound by multiplying its molar mass by the
number of moles of the element present in one
mole of the compound
Mass N =
Mass H =
Mass O =
Answer:
For Mass N, Mass H, and Mass O, the mass is 28.0 g N, 4.0 g H, and 48.0 g respectively
Explanation:
The computation of the mass of each element is given below:
As we know that
A1 mole of ammonium nitrate i.e. 2 mol N, 4 mol H, 3 mol
Now we multiply each of above by the molar masses
For N
= 14.0 g/mol × 2
= 28.0 gN
For H
= 1.0 g/mol × 4
= 4.0 gN
ANd, for O
= 16.0 g/mol × 3
= 48.0 gN
Hence, For Mass N, Mass H, and Mass O, the mass is 28.0 g N, 4.0 g H, and 48.0 g respectively
I REALLY NEED HELP ITS DUE TODAY TY IN ADVANCE <3
HI(aq)+NaOH(aq)→
what the final balanced chemical equation with the phases included
Answer:
[tex]HI(aq)+NaOH(aq)\rightarrow NaI(aq)+H_2O(l)[/tex]
Explanation:
Hello there!
In this case, for this neutralization reaction, it is possible to realize that one the neutralization products is water (pH=7) and the other one is the salt coming up from the cation of the NaOH and the anion of the HI:
[tex]HI(aq)+NaOH(aq)\rightarrow NaI+H_2O[/tex]
Moreover, since the solubility of NaI is large in water, we infer it remains aqueous whereas the water is maintained as liquid:
[tex]HI(aq)+NaOH(aq)\rightarrow NaI(aq)+H_2O(l)[/tex]
Which is also balanced as the number of atoms of all the elements is the same at both sides.
Best regards!
An example of a property that could change only if a chemical
change occurs is
a
size.
b shape.
C volume.
d flammability.
Answer:
d flammabilty
Explanation:
flammability is a property of a chemical change
Scientists are trying to understand the composition of substances on
different planets. Which best describes how scientists are probably working
on this problem?
A. Scientists share information with other scientists who approach
the problem in the same way so that they get support for their
observations.
B. Scientists with different perspectives approach the problem in
various ways, but they all make observations and look for
patterns.
O C. Scientists with the same perspectives use similar experiments so
that they can compare results and draw the same conclusions.
D. Scientists study the problem in the same way because they have
similar backgrounds and share information with each other.
Which contains more reducing sugars, apple or cheese?
Answer:
An apple.
Explanation:
Hope this helps.
What is thisssssssssss
Answer:
2Explanation:
As,
Mg + 2HCl ----> MgCl2 + H2
Which makes the equation balanced.
A gas has a volume of 13.4 L at 17°C. What is the volume of the gas at standard temperature?
Answer:
V=12.6148888506L
Explanation:
using charles law Volume1/Temperature1 = Volume2/Temperature2
13.4L/(17C+273.15C)=V/273.15K
remember gas equations require kelvin not celcius so converting celcius to kelvin is Celcius + 273.15 which is standard temperature conditions
4. Automotive airbags inflate when sodium azide, NaN 3, rapidly decomposes to its constituent elements according to the chemical equation, 2 NaN3 → 2 Na + 3 N2. 2 Na + 3 N2. How many moles of nitrogen are produced when 10000. milligrams of sodium azide decomposes? 0.07691142 mone a. 3.0000 moles 357 2 b. 0.15385 moles c. 0.23077 moles d. 230.77 moles
Answer:
B or 0.1538
Explanation:
Remark
For every mol of NaN3 that decomposes, 3 mols of N2 are produced.
10000 mg = 10 grams
NaN3 = 23 + 3*14
NaN3 = 23 + 42
NaN3 = 65
So set up the following proportion
10 grams / 65 = x /1 Cross multiply
10 * 1 = 65 x Divide by 65
x = 10 / 65
x = 0.1538 moles which is B I think
Choose the appropriate electron configuration for an element that has electrons in six orbitals.
Group of answer choices
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p4
1s2 2s2 2p6 3s1
1s2 2s2 2p5
Answer:
pagtoon og imo dotsExplanation:
pagtoon og imo dotsWhich is an example of technology leading to a new discovery?
A. A truck is used to ship goods between two states.
B. A telescope shows that there is a planet past Neptune
C. An irrigation system is installed at a farm.
D. An antibiotic is used to treat an infection.
Answer:
I think the answer would be B, because there is still stuff past the known exception of out private solar system. (and all the other options don't discover anything.)
Sunlight is more spread out as you move away from the equator.
True
False - poles
Answer:
False.
Explanation:
The given statement asserts a false claim because the equator is the region that receives maximum sunlight. The equator is placed right below the sun and thus, it tends to receive the maximum radiation across the year. While the poles are the coldest regions of the Earth because due to Earth's titled axis, they receive very few sun rays for a certain time of the year. Thus, if we move away from the equator, we are likely to receive less radiation from the sun as the sun keeps getting farther while moving away from the equator.
Image shown below of a chemistry question i would really appreciate the help
.Answer:
2kclo3 --> 2kcl + 3o2 is a decomposition reaction because it is breaking apart (thinks decompose- to break apart/down)
H2 + I2 --> 2HI is a synthesis reaction because synthesis is like creation/ building
think DNA synthesis or the book of genesis in the bible about creation
2 Na + 2 H20 --> NaOH + H2 --- not balanced at all
other one is a balanced equation- the Zn + 2HCl one
Explanation:
A sample of helium gas is heated from 20.0°C to 40.0°C. This
heating process causes the gas to expand to a volume of 585
mL. What was the original volume of the helium gas?
a 292mL
b 370mL
C 548mL
d 625mL
Answer:
C. 548mL
Explanation:
Attached is an image of the explanation. Hope this helps!
Combined gas law states that "the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant".
Temperature ,T₁ = 20⁰C = 20+273.15K = 293.15K
Temperature, T₂ = 40⁰C = 40+273.15K = 313.15K
According to combined gas law,
P₁V₁/n₁T₁ = P₂V₂/n₂T₂
Where, n is moles of substance
P is pressure
P and n are considered to be a constant.
Thus, V₁/T₁ = V₂/T₂
V₁ = V₂T₁/T₂
V₁ = ?,
V₂ = 585mL = 585mL x 293.15K/313.15K
V₁ = 548mL
Hence, the original volume of the helium gas is 548mL.
What is pressure?"Pressure is the force of all the gas particle/wall collisions divided by the area of the wall."
What is volume?"Volume is the amount of space occupied by a substance."
What is temperature?"Temperature is the measure of hotness or coldness expressed in terms of any of several scales, including Fahrenheit and Celsius."
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When an organism eats a plants,the energy and nutrients stored in the consumed organism flows up to the____level
Answer:
Energy is transferred between trophic levels when one organism eats another and gets the energy-rich molecules from its prey's body.
Explanation:
The flow of energy in an ecosystem is always linear ie uni direction. At each energy step in food chain, the energy received by the organisms is used for its own metabolism and maintenance. The left over energy is passed to next higher trophic level. Thus the energy flow decreases with successive trophic level.
ASAP PLS
A 18.7 g piece of aluminum (which has a heat capacity of 0.89 JPC-g) is
heated to 82.4°C and dropped into a calorimeter containing water
(specific heat capacity of water is 4.18 J/gºC) initially at 22.3°C. The final
temperature of the water is 24.3°C. Ignoring significant figures, calculate
the mass of water in the calorimeter. *
Answer:
think I did this before and its V
What is the wavelength of a photon with a frequency of 4.72 x 1014 Hz?
A. 635 nm
B. 142 nm
C. 421 nm
D. 313 nm
Answer:
635 nm
Explanation:
more simple answer
The correct option is (a) 635 nm.
What is a simple definition of a wavelength?A wavelength that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent crests) in the consecutive cycles.Wavelength is usually denoted by the Greek letter lambda (λ)Given,
λ=6.36×10−7 m
Let C = the speed of light =3.00× [tex]10^{8}[/tex] m/s
Let f = the frequency = 4.72 × [tex]10^{14}[/tex] Hz
Let λ= the unknown wavelength
Now apply formula of wavelength
λ = C /f
λ = [tex]\frac{3.00 * 10^{8 }m/s }{4.72 * 10^{14} Hz}[/tex]
λ = 6.36 × [tex]10^{-7}[/tex] m
λ = 635 m
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The equation for the formation of ammonia from nitrogen and hydrogen is shown below. What is the formula for the equilibrium constant, Kc? {Hint, I’m just looking for letters/symbols, not numbers.}
H2(g) + N2(g) ⇌ NH3(g)
First, make sure to balance your equation.
3H2(g) + N2(g) ⇄ 2NH3(g)
Now, you can write your Kc expression. Remember that Kc is products over reactants, and the exponent for each product or reactant is based on its coefficient.
Kc = [NH3]^2 / [H2]^3[N2]
The reaction between nitrogen and hydrogen is called the Haber process. Kc for the reaction is the ratio of the concentration of ammonia to nitrogen and hydrogen.
What is the equilibrium constant?An equilibrium constant, kc is the concentration proportion of the products to the concentration of the reactants raised by their respective coefficients.
The balanced chemical Haber process is given as:
[tex]\rm 3H_{2}(g) + N_{2}(g) \leftrightharpoons 2NH_{3}(g)[/tex]
Now, the equilibrium constant for the reaction can be given as:
[tex]\rm Kc = \rm \dfrac{[NH_{3}]^{2}}{[H_{2}]^{3}[N_{2}]}[/tex]
Therefore, the ratio of the concentration of ammonia to hydrogen and nitrogen gives the equilibrium constant.
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can someone help me with 5?
Answer:28 g
Explanation:
Can somebody please help me!!!
Answer:
energy
Explanation:
Energy is used to do work or produce change. Friction and velocity do not do this.
What must remain constant if Charles' law is to be applied to a
given sample of a gas?
a Pressure
b Volume
C Temperature
d None of the above
Answer:
pressure must remain constant
Explanation:
charles law= V/T
where pressure remains constant
If Charles' law is to be applied to a given sample of a gas, then it must have constant pressure.
What is gas law?Gas law are the hypothesis which tells about the behavior of gas at different conditions.
According to the Charles' Law, volume of the gas at any constant pressure and no. of moles of gas is directly proportional to the temperature of the gas at that condition. Charles' law is represented as:
V ∝ T, where
V = volume of gas
T = temperature of gas
Hence option (a) is correct i.e. pressure.
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A box of pills claims that they will make your cold go away sooner. Who
would be the most impartial source for information on this claim?
A. The company that makes the medicine
B. The store that sells the medicine
C. A company that makes a competing medicine
.
D. A university study that tests medicine
Answer:D
Explanation:
c. Write P on the line if the given object possesses potential energy and Krit
possesses kinetic energy.
1. Bouncing ball
2. Swinging chimes
3. Toys on the floor
4. Drinking glass on a table
5. Rotating blades of an electric fan
6. Moving car
7. Skater standing still
8. A running athlete
9. Planets orbits in its axis
10. lamp
Answer:
1 K
2 P
3 P
4 P
5 K
6 K
7 K
8 P
9P
10 K
How many moles can be found in 1.5 x 10^24 atoms of Calcium?
r.
25. An organic compound (A) C3H5N, undergoes reduction with
LiAlHe to give (B), CzHgN. Compound (B) reacts with
chloroform and KOH to give an unpleasant smell. Compound
(B) reacts with sodium nitrite and hydrochloric acid to give
(C), C3H80, which on treatment with conc. H2SOа acid gives
(D) C3H6. (D) on reaction with conc. H2SO4 and subsequent
hydrolysis yield an isomer of (C). Identify A, B, C, D with
proper explanation and chemical reactions.
frivolont metal was
Answer:
A - Nitrile compound
B- AlkylAmine
C- Alcohol
D - Alkene
Explanation:
(A) undergoes reduction to form alkylamine.
(B) is a primary alkyl amine which on carbylamine test gives a foul smell.
(B) reacts with NaNO2 + HCl undergoes diasotisation following which alcohol is produced.
(C) being a alcohol undergoes hydrolysis to give alkene.
(D) On further reaction with H2S04 by the rule of Markownikoff rule it forms a isomer of (C).
1
is the amount of space
that matter in an object occupies.
4. How many moles of NaOH(s) would be required to react with 1.90 g of Cu(NO3)2 (aq)
according to the balanced equation:
Cu(NO3)2(aq) + 2 NaOH(aq) → Cu(OH)2(s) + 2 NaNO3(aq)
Answer:
2.03 x 10⁻² mol NaOH
Explanation:
First step for these questions is to ensure the reaction is balanced, then use the periodic table to determine the molar mass for the reactant you are given. Use the ratio from the balanced equation and dimensional analysis to solve. See attached image