Which among the following will make lime water look milky
option C) Ca(OH)₂
What did Antoine Lavoisier’s experiments demonstrate?
A. Atoms always split into pairs during a chemical change.
B. Mass is neither lost nor gained during a chemical change.
C. Matter can be created during a chemical change.
D. Energy is neither lost nor gained during a chemical change.
What is a speed of 55 mph equivalent to in units of m/s? (1 mile = 1609 m, 1 hour = 3600 s)
Answer:
24.58 m/s
Explanation:
Given that,
Speed of an object = 55 mph
We need to find the equivalent unit in m/s
We know that,
1 mile = 1609 m
1 hour = 3600 s
So,
[tex]55\ mph=\dfrac{55\times 1609\ m}{3600\ s}\\\\=24.58\ m/s[/tex]
So, the required speed is 24.58 m/s.
0. Earth's rock is continually cycling through different states and locations. The diagram below shows the rock cycle. The labels for two processes are missing.
Weathering of
ROCKS at surface
IGNEOUS
ROCK
Uplin
SEDIMENTARY ROCK
METAMORIHIC ROCK
Melting
Which of these processes could be happening at the stage labeled 2?
o folding and mountain building
chemical changes due to heat and pressure
compaction and cementation of weathered sediments
subduction of an oceanic plate beneath a continental plate
Answer:
Chemical changes due to heat and pressure
Explanation:
Just took the test, hope this helps! :)
Answer:
Chemical changes due to heat and pressure
Explanation:
I took this test and got a 100%! :D
what is the magnitude of earthquake took place in manila?
A.5.2
B.5.3
C.5.4
D.5.5
Answer:
i believe its 5.2
Explanation:
_____ is the element from which iron is taken.
Carbon
Quartz
Hematite
The diagram shows heat energy being transferred as hot water rises to the top of the pot and cool water sinks to the bottom.
water cools
cool
water
sinks
cool
water
hot
sinks
water
rises
What process is shown in the diagram?
A conduction
B. convection
O c Insulation
O D. radiation
Which observation shows that a substance is malleable
(A) the substance breaks apart when stretched
(B) the substance shatters when hit with a hammer
(C) the substance flattens when hit with a hammer
(D) the substance can be stretched easily into wires
Answer:
B
Explanation:
Answer:
It is C: the substance flattens out when struck with a hammer
Explanation:
Metamorphic rock is formed from the weathering, erosion and cementing of sediments.
True
False
Answer:
False
Explanation:
Metamorphic rocks form when rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, some combination of these factors.
This question is reffering to sedimentary rocks, so it's false.
Answer:
Weathering (breaking down rock) and erosion (transporting rock material) at or near the earth's surface breaks down rocks into small and smaller pieces. When the molten rock cools it forms an igneous rock. Metamorphic rocks can form from either sedimentary or igneous rocks.
Explanation:
True
The beakers in the picture above are labeled according to the ionic solutions they contain. What metal or metals could replace copper in the copper(II) nitrate solution?
Explanation:
When a metal replaces another metal in solution, we say such a reaction has undergone a single displacement reaction.
In such a reaction, metal higher up in the activity series replaces another one due to their position.
To known the metal or metals that will replace the given copper, we need to reference the activity series of metals.
Every metal higher than copper in the series will displace copper from the solution.
So, there metals are: potassium, sodium, lithium, barium, strontium etc.
Write the following in standard notation: 2.8 x 10-5s.
Answer:
2.8 X 10-5s in standard notation is 28-5s
Explanation:
Multiply 2.8 by 10
Can someone plz help? Thanks so much!
An atom that contains 6 protons 6 neutrons and 6 electrons has a mass of approximately
1) 12 u
2) 12 g
3) 18 u
4) 18 g
Answer:
12 grams
Explanation:
Electrons do not contribute to mass. The proper unit to use is G
What human activities could increase erosion?
Check all that apply.
stripping the land of vegetation to build a mall
letting cattle overgrazing farmland
planting trees and shrubs
surrounding a corn field with a fence or shrubs
deforestation
plowing fields
I think it is the first one, the second one, and the fifth one. Hopefully helps :)
Step 7: Determine the Limiting Reactant (Trial 2)
50
Analysis: The limiting reactant(s) appeared to be
because ...
Answer:
aluminum
no aluminum is left over
Explanation:
the next answers for step 7 are 0.019, 0.0093, aluminum
Answer:
Aluminum because no aluminum is left over
Explanation:
how many molecules are in 0.89 of silver
Answer:
5.36 × 10²³ molecules
Explanation:
Given data:
Number of moles of silver = 0.89 mol
Number of molecules = ?
Solution:
Avogadro number:
The number 6.022 × 10²³ is called Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
Number of molecules of silver:
1 mole contain 6.022 × 10²³ molecules
0.89 mol × 6.022 × 10²³ molecules /1 mol
5.36 × 10²³ molecules
How is agriculture depended on industries
Answer:
The interdependence of agriculture and industry helps the development of both the sectors. The most important aspect of this inter dependence is that the products of one serve as important inputs for the other. Growth of one sector, thus means ample supply of inputs for the other.
Explanation:
What kind of information does this map show?
A. The roads that connect different cities
OB. The shapes of different landforms
O C. The elevation of Earth's surface features
D. The natural resources found in different areas
Coffee is an example of a
Answer:
I think it is mixture and of chemical reaction
How does thermal energy flow between a hot or cold pack and the atmosphere?
Answer:
Heat is the transfer of energy. During energy transfer, the energy moves from the hotter object to the colder object. This means that the hotter object will cool down and the colder object will warm up. The energy transfer will continue until both objects are at the same temperature.
Explanation:
You put two pots of water on the stove to boil. Both pots are the same size and are on the same size burner at the same heat setting, and one pot has twice as much
water as the other. Which one will boil faster? Why do you think that is?
Answer:
The emptiest one.
Explanation:
The more water, the more heat molucules have to turn to boil.
Have a great day!
Hope I helped and it would be greatly appreciated if you could be considerate and give brainliest.
A balloon is filled with 10 liters of air at a pressure of 5 atm. What is the pressure of the balloon if the volume is changed to 20 liters
What is true about the structure or function of the plasma membrane?
A:It is made entirely of integral proteins.
B:Hydrophilic molecules attract the water the cell requires.
C:The processes of endocytosis and exocytosis occur here.
D:The double layer prevents anything from entering the cell
Answer: hi theree, the answer is c. the processes of endocytosis and exocytosis occur here
hope this helps, have a good day :)
Explanation:
Answer:
C. The processes of endocytosis and exocytosis occur here
Explanation:
I just took the k12 test
Me and my best friend. Gotta love her.
Answer:
cool
Explanation:
025 Aqueous barium chloride and aqueous potassium carbonate react to produce solid
barium carbonate and aqueous potassium chloride.
A25
I need the balanced chemical equation for this
The balanced equation
BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + 2KCl(aq)
Further explanationGiven
word equation
Required
Balanced equation
Solution
Convert to chemical equation :
Reaction
BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + KCl(aq)
Give a coefficientaBaCl₂(aq)+ K₂CO₃(aq)--> bBaCO₃(s) + cKCl(aq)
Make an equationK, left = 2, right = c⇒c=2
C, left = 1, right = b⇒b=1
Ba, left = a, right = b⇒a=b⇒a=1
The equation becomes :
BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + 2KCl(aq)
Which of the following statements regarding bond energies is FALSE?
Answer:where are the statements
Explanation:
What is the molar mass of Ba3(PO4)2?
Answer:
601.93 g/molexplanation:Problem: The Ba3(PO4)2 (molar mass = 601.93 g/mol) precipitate that formed from a salt mixture has a mass of 0.667 g.
The molar mass of barium phosphate is 601.93 g/mol.
What is molar mass?Molar mass is defined as the mass of a compound divided by the number of moles which is the amount of substance .It is a bulk quantity and not a molecular property of a substance . They are mostly calculated by adding the atomic masses of constituent elements in a compound.
It is an average of many particles or molecules.Molar mass is an intensive property as it does not depend on size of the sample.It has units of kg/mol. Molar masses of elements is given by relative atomic mass of element whereas that of compounds is given by the sum of relative atomic mass multiplied by the molar mass constant.
They are never measured directly , they are measured from the standard atomic masses.
Learn more about molar mass,here:
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Can someone help me on this please
Answer:
the answer for 5 is liquid
Earths rocks change from one type to another over time die to various earth processes A- igneous rock B- cementation C- metamorphic rock D- rock cycle
Answer:
The rock cycle describes the processes through which the three main rock types (igneous metamorphic, and sedimentary) transform from one type into another.
Calculate the percent composition of Fe in Fe(OH)3
Answer:
52.257%
Explanation:
5. Determine if each statement is true or false about forming a hypothesis:
a. It must be long.
b. It is an educated guess.
c. It is in if…then format.
d. It must be testable.
e. It must start with I think.
How many moles in 13 grams of C 2 H6 ? show work
Answer:
0.43mole
Explanation:
Given parameters:
Mass of C₂H₆ = 13g
Unknown:
Number of moles = ?
Solution:
To solve this problem we need to first find the molar mass of the given compound.
Molar mass of C₂H₆ = 2(12) + 6(1) = 30g/mol
So;
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Number of moles = [tex]\frac{13}{30}[/tex] = 0.43mole