Answers
ill guess c
Explanation:
g
Related Questions
Select the correct answer from each drop-down menu.
Researchers stationed at different areas on a mountain and in a tunnel midway through the mountain boiled water at the same time. Even though the water at every station was at the same temperature, the pot at the top of the mountain started boiling before the others. Why?
Water boils when the vapor pressure is
the atmospheric pressure. The atmospheric pressure
at the top of the mountain.
Answers
Water boils when the vapour pressure is least the atmospheric pressure.
The atmospheric pressure is equal at the top of the mountain.
What is atmospheric pressure?The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure. It is the force exerted on a surface by the air above it as gravity pulls it to Earth.
As we go up in altitude the air pressure becomes less. When the pressure decreases, it takes less energy to get the water molecules to escape the surface. So the temperature is less than it would be at sea level.
Air pressure is higher or greater at the bottom of a mountain. This is because the height of the air above that level is thicker than at the top.
Pressure is given by the equation, P=rho*g*h, where rho is the air density, g is the gravity value and h is the thickness of the air layer on top of the level where we are considering the pressure.
Therefore, as we can see, at the bottom of the mountain, the thickness h of air is greater, and so is the pressure.
Hence, water boils when the vapour pressure is least the atmospheric pressure and the atmospheric pressure is equal at the top of the mountain.
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Which is the balanced equation for S8 + O2 → SO2?
S8 + O16 → 8SO2
S8 + O2 → S8 + O2
S8 + O2 → S8O2
S8 + 8O2 → 8SO2
Answers
Answer: S8 + O2 → S8O2: not 100% sure
Explanation:
A balanced chemical equation happens when the quantity of the particles is required on the reactants side is equivalent to the quantity is the molecules in the items side.
Explain in a short sentence how you can tell a reaction is a decomposition reaction.
Answers
Answer: A decomposition reaction occurs when one reactant breaks down into two or more products.
Mark me as brainilist pls
what the correct answer
Answers
Answer:
Alkali metals are elements found in group 1 of the Periodic Table. Alkali metals are soft, malleable, ductile, and are good conductors of heat and electricity. They have low melting and boiling points compared to most other metals.
Iron-containing minerals in rocks may combine with water and air to create rust. This is an example of
A. chemical weathering
B. mechanical weathering
C. abrasion
D. exfoliation
Answers
Answer:
A
Explanation:
chemical reaction are those type of reaction that are irreversible and a new substance is being formed therefore when the iron combine with water and air it leads to rusting.
What is the volume of a balloon that contains a 1.00 mol sample of oxygen with a pressure of 2.00 atm at 300.0 K?
Answers
Answer:
12.3
Explanation:
Trust
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, 12.3L is the volume of a balloon that contains a 1.00 mol sample of oxygen with a pressure of 2.00 atm at 300.0 K.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles.
Mathematically the relation between Pressure, volume and temperature can be given as
PV=nRT
where,
P = pressure of oxygen gas= 2.00 atm
V= volume of oxygen gas =?
n =number of moles of oxygen gas=1.00 mol
T =temperature of oxygen gas =300.0 K
R = Gas constant = 0.0821 L.atm/K.mol
Substituting all the given values, we get
2.00×V=1× 0.0821×300.0
On calculation we get
Volume=12.3L
Therefore, the volume of oxygen is 12.3L.
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How many hydrogen atoms Is needed for C4H8 to become saturated
Answers
Answer:
2 atoms
Explanation:
Because it contain one double bond
Why Do Some Things Stop While Others Keep Going?
Answers
Answer:because they run out of energy when it is transferred and to other objects, or their kinetic energy
Explanation:
How do we know that caramelizing sugar is a chemical change?
It involves dissolving sugar in water.
It changes the state of sugar from a solid to a liquid.
It separates sugar fromn a sugar solution.
It changes the sugar's color.
Answers
Answer:
Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.
Explanation:
caramel is the product of the sugar and hot water
Answer:
D It changes the sugars color
Explanation:
Because the change of color is a chemical change.
Have a splendid day! I hope you like the answer given.
PLZ HELP!
Why do we use ramps (inclined planes) to help us move objects?
Plz nothing from the internet :D
Answers
Are assorted jelly beans heterogeneous or homogeneous
Answers
Heterogeneous, which means that they are not evenly combined.
Which of the following compounds is least soluble in water?
1) Copper (II) Chloride
2) Aluminum Acetate
3) Iron (III) hydroxide
4) Potassium Sulfate
Answers
Answer:
3) iron (iii) hydroxide
Explanation:
3. What is the best description of an ionic bond?
A. electrostatic force of attraction between positive and negative ions
B. electrostatic force of repulsion between ions of the same charge
C. nuclear force of attraction between protons of different atoms
D. nuclear force of repulsion between protons of different atoms
Answers
What is the charge of the nucleus ? Why ?
Answers
Answer:
A nucleus is a positive charge
Explanation:
A nucleus is made up of protons and neutrons. Protons have a positive charge and neutrons have a neutral charge.
(QUICK PLEASE!)
When you walk, your foot pushes down on the ground. What is the response of the ground?
Nothing?
It holds your foot?
It pushes with equal force on your foot?
It pushes with more force against your foot.
Answers
Answer:
It pushes back with equal force.
Explanation:
This is pretty much newton's first law.
do pressure and temputer remain consant in earth interior
Answers
Answer:
no
Explanation:
What is chemical structure about?
Answers
Answer:
chemical structure determines the molecular geometry of ca compound by prtraying the arrangement of atoms and chemical bonds in the molecule..
Explanation:
hope this helps any <3
Give answer fast (C)
☹️☹️☹️☹️☹️☹️
Answers
(-3)^3 + (-3)^2 + -3 + 5
-27 + 9 - 3 + 5
-18 - 3 + 5
= -16
The answer is -16 for C
Do your answers to the previous questions satisfy
the following statements?
A) The dependent variable is changed by the
independent variable.
B) The independent variable causes a change
to another variable.
C) The independent variable is not changed by
another variable.
Answers
Answer:
I put B&C
Explanation:
it takes a slug 20 minutes to travel from the grass to the trash can a trip of 15 meters. how far could the slug travel in 60 minutes
Answers
Answer:
45 meters
Explanation:
Did the math
The prefix "semi-" means "partly". Based on your knowledge of the properties of elements, which kind of element is most likely used to make semiconductors?
liquids
metalloids
metals
nonmetals
Answers
Answer:
metalloids
Explanation:
The kind of element most likely used to make semiconductors are the metalloids.
These elements have properties between those of metals and non-metals in that they are not truly metals and are partly non-metals.
Under certain conditions they show features of metals or non - metals. The class of these elements are the metalloids. They are used to make semiconductors which are major components of electronics.what mass of carbon dioxide is produced from combustion of 100.0 grams of propane (C^3H^8)
Answers
Answer:
Mass of CO₂ produced = 299.64 g
Explanation:
Given data:
Mass of CO₂ produced = ?
Mass of propane (C₃H₈) = 100.0 g
Solution:
Chemical equation:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Number of moles of propane:
Number of moles = mass/molar mass
Number of moles = 100.0 g/ 44.1 g/mol
Number of moles = 2.27 mol
Now we will compare the moles of propane and carbon dioxide.
C₃H₈ : CO₂
1 : 3
2.27 : 3/1×2.27 = 6.81 mol
Mass of CO₂:
Mass = number of moles × molar mass
Mass = 6.81 mol × 44 g/mol
Mass = 299.64 g
In Step 5, you will calculate H+/OH– ratios for more extreme pH solutions. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide for a solution at a pH = 2. Then divide the H+ concentration by the OH– concentration. Record these concentrations and ratio in Table C. What is the concentration of H+ ions at a pH = 2? mol/L What is the concentration of OH– ions at a pH = 2? mol/L What is the ratio of H+ ions to OH– ions at a pH = 2? : 1
Answers
The ratio of H⁺ ions to OH⁻ ions at a pH = 2 is 10¹⁰
Further explanationGiven
ph = 2
Required
The concentration of H⁺ and OH⁻ ions
Solution
The concentration of H⁺ ionspH=-log[H⁺]
2=-log[H⁺]
[H⁺]=10⁻²
The concentration of OH⁻ ionspH+pOH=14
pOH=14-2
pOH=12
pOH=-log[OH⁻]
12=-log[OH⁻]
[OH⁻]=10⁻¹²
The ratio of H⁺ ions to OH⁻ ions at a pH = 2[tex]\tt \dfrac{10^{-2}}{10^{-12}}=10^{10}[/tex]
Answer:
First one: 0.01
second one: 0.000000000001
third one: 10000000000
Question
Your boss is required to provide job safety training:
A) only if you request the training
B) as soon as there are a sufficient number of new employees
C) before you start your job
D) within the first year of your new job
Answers
Answer:
C) before you start your job
Explanation:
its the 1st thing to do when ur on a job...i guess not sure but try it anyway....but if im wrong blame
Answer:
I think it's c (before you start your job)
Explanation:
cuz we can get experienced after we are provided job safety training and it is also the first thing we will be given.
sorry if I'm wrong
RODINNIS
COURSES
onal Science
Attempt 1 of 2
Which of the following distinctions are used to identify sedimentary rock? Select all that apply.
o where is was formed
conditions it was formed under
n when it was formed
what it is composed of
how many layers it consists of
NEED HELP ASAP (check the picture)
Answers
where it was formed and. conditions it was formed under
Our Sun will eventually turn into a red giant and, finally, a white dwarf. Use the Hertzsprung-Russell
diagram to describe how the Sun's luminosity and temperature will change as it goes through these
stages.
Answers
Our Sun will eventually turn into a red giant in the cooler temperature and high luminosity and in the white dwarf phase has a hot temperature & dim luminosity.
What is Hertzsprung-Russell diagram?In astronomy, the Hertzsprung-Russell diagram, often known as the H-R diagram, is a graph that plots the absolute magnitudes (intrinsic brightness) of stars against their spectral classifications (temperatures).
From the given diagram it is clear that when sun turns into a red giant then the temperature decreases and luminosity increases as it becomes large in size. And when it finally become a white dwarf then temperature comparatively increases and luminosity gets dim due to smaller size.
Hence in the red giant phase sun has a cooler temperature and high luminosity and in the white dwarf phase has a hot temperature & dim luminosity.
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PLZ HELP!
How does changing the angle of a ramp affect the force required?
Answers
Answer:
depending on how you change the angle on the ramp the kanetic energy can go up or down depending on how u angle the ramp
Explanation:
What is the density of an object with a mass of 125 g and a volume of 150 mL ?
Answers
Answer:
13
Explanation:
234567877
Calculate the volume, in liters, occupied by 1.80 moles of H2 gas at STP.
Answers
Answer:
40.32L
Explanation:
So we know that 22.4 Liters is one mole of a gass so we can set up an equation to test that
1mole 1.8mole
_____ = _____
22.4L x
and then cross multiply so you get 40.32L
Answer:
40.32L
Explanation:
Just did worksheet
Question 4
TRUE or FALSE?
The particles in a solid have NO kinetic energy (they do not move).
True
False
Answers
Answer: True
Explanation:
Particles vibrate in place but do not move.