HELP PLEASE!!!!!!
“Andy was drawing
of his circuit. When
asked to explain it,
he said, “This is an
example of a
perpendicular
circuit. The light on
the left will be
brighter because
there is less wire."
Is he correct?”
Answers
Related Questions
A Sedentary lifestyle is a way of life that includes a lot of physical activity true or false?
Answers
66 A student wants to design a controlled experiment to solve the following problem: When placed in a freezer, will hot water or cold water reach 0°C faster?
The student plans to place two containers with equal masses of water (one hot and one cold) in the same freezer in the classroom.
a List three conditions the student should keep constant for the hot-water and cold-water setups when planning this experiment. [3]
b For each condition you name, give a scientific reason why the condition needs to be the same for both the hot-water and cold-water setups
Answers
Answer:
Explanation:
is guiZ
The boiling point of ethanol is 78.3 degrees Celsius. The boiling point of
ethanol on the Kelvin scale is approximately... *
Answers
Answer:
K = 351.3
Explanation:
The relationship between the Celsius scale and kelvin scale is;
K = 273 + C
Since the Celsius temperature = 78.3
The kelvin temperature is given as;
K = 273 + 78.3
K = 351.3
lime kilns are very large. why is this necessary?
Answers
Good luck
What is the chemical formula for sodium sulfate
Answers
Answer:
Na2So4
Explanation:
Na is group 1, so has a charge of 1+
Sulphate’s formula is SO4 2-,
because sulphate has double the charge of Na, you need two Na’s to make it equal.
Therefore it’s Na2SO4
S-L Line
760
L-G Line
LIQUID
PRESSURE OF THE SUBSTANCE mm Hg
380
SOLID
58
GAS
-S-G Line
O'c
100°C
TEMPERATURE OF THE SUBSTANCE
S-L Line: Line showing conditions in which solid
and liquid phases are in equilibrium.
L-GLine: Line showing conditions in which liquid
and gas phases are in equilibrium
S-G Line: Line showing conditions in which solid
and gas phases are in equilibrium
What is the approximate vapor pressure when the gas condenses at 80'C?
200
05
760
430
Answers
Which equation is NOT balanced?
A. 2H2 + O2® 2H2O
B. H2 + H2 + O2® H2O + H2O
C. 2H2 + O2® H2O
D. 4H2 + 2O2® 4H2O
Answers
Answer:
C
Explanation
On the reactants side there is 4 Hydrogen atoms in total and two oxygen atoms on the left however on the right there is two hydrogen atoms and one oxygen atom. Leaving this equation unbalanced
The equation that is NOT balanced is [tex]\rm 2H_2 + O_2\rightarrow H_2O[/tex]. The correct answer is option C.
In a balanced chemical equation, the number of atoms of each element on the reactant side must be equal to the number of atoms of each element on the product side.
In equation A, there are 4 hydrogen atoms and 2 oxygen atoms on both the reactant and product sides, so it is balanced.In equation B, there are 4 hydrogen atoms and 2 oxygen atoms on both the reactant and product sides, so it is balanced.In equation C, there are 4 hydrogen atoms and 2 oxygen atoms on the reactant side, but only 2 hydrogen atoms and 1 oxygen atoms on the product side. Therefore, it is not balanced.In equation D, there are 8 hydrogen atoms and 4 oxygen atoms on both the reactant and product sides, so it is balanced.In conclusion, equation C. [tex]\rm 2H_2 + O_2\rightarrow H_2O[/tex] is the one that is NOT balanced. It has an unequal number of oxygen atoms on the reactant and product sides.
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refers to the way in which atom bond with each other
Answers
Answer:
Atoms have a central nucleus with positively charged protons and neutral neutrons; negatively charged electrons circle the nucleus. The electrons that are involved in chemical bonding are those electrons in the outermost orbit, referred to as valence electrons.
Explanation:
Chemical bond refers to the way in which atom bond with each other
What is chemical bond?A chemical bond is a form of attraction or bond that exist between atoms, ions or molecules. This bond allows the formation of chemical compounds.
The bond can be as a result of electrostatic force of attraction.
Therefore, Chemical bond refers to the way in which atom bond with each other
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As you move down a group of the periodic table how does the atomic radius of the atoms change
Answers
Answer:
An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements. In general, the size of an atom will decrease as you move from left to the right of a certain period.
Explanation:
Energy changes WITHIN an energy type is called what?
Answers
Answer:
What is energy transformation? One type of energy can change into another type of energy. Energy transformation means the changing of energy from one type to another, e.g. from kinetic energy to electrical energy, or from potential energy to kinetic energy.
Explanation:
Answer:
It may seem a bit weird, but, I'm only doing this so that you can make that other person brainliest.
Explanation:
help Mepleaseeeee !!!
Answers
Answer:
The 500kg boulder
Explanation:
How many molecules of carbon dioxide are in 12.2 L of the gas at STP?
Answers
Answer:
Converting Between Moles and Liters of a Gas at STP. To convert between moles and the volume of a gas at STP, we will use the factor label method discussed in the first unit. This conversions relies on the fact that a mole of gas at STP has a volume of 22.4 L.
Explanation:
One molecule of carbon dioxide at STP has a volume of 22.4 liters . Thus number of molecules of carbon dioxide in 12.2 L is 3.27 × 10²³ molecules.
What is one molecule?A molecule is formed by the combination of same or different kinds of atoms. A number molecules together form a compound. Water, carbon dioxide etc. are compounds.
One mole of a molecule contains 6.022 × 10²³ number of atoms. Similarly, one mole of a compound contains, 6.022 × 10²³ number of molecules.This number is called Avogadro number.
At standard temperature and pressure (STP) that is at 298 K and 1 atm pressure, one mole of any substance carry 22.4 L. Thus number moles of 12.2 L of carbon dioxide is 12.2 / 22.4 = 0.54 moles.
Number of molecules = 0.54 moles × 6.022 × 10²³
= 3.27 × 10²³
Hence, number of molecules of carbon dioxide in 12.2 L is 3.27 × 10²³ molecules.
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what produces energy from sugar through chemical reactions it can also called the PowerHouse of cell??
Answers
Answer:
Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell. In cellular respiration sugar with the help of oxygen is broken down into ATP (energy molecule).
How many grams are in 8.5 moles of lithium oxide?
Answers
I RLLY NEED HELP. Use Image B (picture above) and calculate the density of a ring that has a mass of 32 grams. Read Page 11 "Measure Volume Using Displacement" on your textbook before answering this question. Formula: D=m/V m=_____ V= _____ , then the density (D) is equal to D= ______ This question requires three answers. Don't forget the units! *
Answers
Answer:
Mass of ring = 32 g
Volume of ring = 4 mL
Density of ring = 8 g/mL
Explanation:
From the question given above, the following data were obtained:
Mass of ring = 32 g
Volume of water = 64 mL
Volume of water + ring = 68 mL
Density of ring =?
Next, we shall determine the volume of the ring. This can be obtained as follow:
Volume of water = 64 mL
Volume of water + ring = 68 mL
Volume of ring =?
Volume of ring= (Volume of water + ring) – (Volume of water)
Volume of ring = 68 – 64
Volume of ring = 4 mL
Finally, we shall determine the density of the ring. This can be obtained as follow:
Mass of ring = 32 g
Volume of ring = 4 mL
Density of ring =?
Density = mass / volume
Density of ring = 32 / 4
Density of ring = 8 g/mL
If I have one mole of sulfur, how many atoms would that be?
Answers
Answer:
Atoms of sulfur = 9.60⋅g32.06⋅g⋅mol−1×6.022×1023⋅mol−1
Explanation:
because the units all cancel out, the answer is clearly a number, ≅2×1023 as required.
This is a sign of a chemical reaction that involves the production of bubbles or fizzing
Answers
Answer:
gas production
Explanation:
Answer:
gas formation
Explanation:
frothy bubbles produced by carbon dioxide gas are a sign that a chemical reaction has occurred when a based is mix with acid.
Large areas on the leaves of some plants lack chlorophyll and are therefore not green in color. How does this most likely affect photosynthesis?
Not enough sunlight is captured in these areas of the leaves.
Carbon dioxide cannot enter these areas of the leaves.
Too much glucose builds up in these areas of the leaves.
Oxygen cannot be released in these areas of the leaves
Answers
Answer:
Not enough sunlight is captured in these areas of the leaves.
Explanation:
Photosynthesis is the process whereby green plants manufacture their food using carbon dioxide and water in the presence of sunlight.
The sunlight is the energy source which drives this chemical change or reaction.
Therefore, to capture the sunlight, the green pigment called chlorophyll is needed. Without this sunlight, photosynthesis will not take place. Photosynthesis is a light dependent reaction. Without light, the process is greatly hamperedFe2(SO4)3 +__BaCl2 → __BaSO4 +_
FeCl3
Answers
Answer:
Fe2(SO4)3 + 3BaCl2 → 2FeCl3 + 3BaSO4
what did you include in your response?
check all that apply
Answers
Answer: i don't know
Explanation:
u gave no information on what you're asking
Identify processes that change matter to a liquid state.
Answers
Processes in which matter changes between liquid and gaseous states are vaporization, evaporation, and condensation.
When the temperature or pressure of a system change, there occurs a change in the state of matter. The process that change the solid state into the liquid state is called the melting.
What is melting?The process in which the solid is changed into a liquid is defined as the melting. The temperature at which a solid change to a liquid is known as the melting point.
The other process in which a gas changes to a liquid is known as the condensation. This process is found to be the reverse of evaporation, where liquid water becomes a vapor.
Thus the two processes that change matter to a liquid state are melting and condensation.
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Which of these is an example of water in liquid form
Answers
Answer:
???????????????????????
Answer:
river or lake
Explanation:
how is this equation read?
4Na (1) +Mn(SO 4 ) 2 (aq) Mn (3) +2Na 2 SO
Answers
pls do this and don't just do it for the points pls help me I need it
Answers
Answer:
what do you want me to do my friend my best friend who is a dreamer
Name the method that is used to separate cream and skim milk from each other
Answers
Answer:
the separator is a centrifugal device that separates milk into cream and skimmed
I hope it helps you
1. Which of these is NOT found in the nucleus of an atom?
neutrons
protons
electrons
the mass of the atom
Answers
Answer:
Electrons
Explanation:
Answer:
Electrons are not found in the nucleus for they are orbiting the atom.
the electrolyte in automobile lead storage batteries is a 3.75 sulfuric acid solution that has density of 1.230g/mL. calculate the mole fraction.
Answers
The mole fraction of sulfuric acid : 0.073
Further explanationGiven
3.75 M sulfuric acid solution that has density of 1.230 g/mL
Required
The mole fraction
Solution
3.75 M = 3.75 mol/L
For 1 L solution :
mass of solution = 1230 g
mass Sulfuric acid : 3.75 mol x 98 g/mol=367.5 g
mass water = 1230-367.5 = 862.5 g
mol water = 862.5 : 18 g/mol= 47.92
mol total = 3.75 + 47.92 = 51.67
mole fraction of sulfuric acid :
= 3.75 : 51.67
= 0.073
Given the following reaction, how many moles of iron(III)
oxide can be produced from 65.2 moles of iron?
4Fe + 302 → 2Fe2O3
Answers
32.6
Explanation;
The ratio of iron to iron oxide is 4:2, so you half the number of moles of iron to get the number of moles of iron oxide
All of the devices below either use or produce electrical energy. Which one converts mechanical energy to electrical energy?
battery
electric drill
wind turbine
electric guita
Answers
Answer:
C- Wind turbine
Explanation:
Answer:
its c wind turbine
Explanation:
how does the concentration of sodium thiosulphate affect the rate of reaction in between hydrochloric acid and sodium thiosulphate
Answers
Answer: C
Explanation:
I know because i did it.