Answers
Answer:
1. electrical conductor
2. orbit
3. potential energy
4. magnetic field
5. net force
6. B; repulsion
7. A; copper
8. B; there is no gravitational attraction between you and the cup, but Earth's gravity is stronger, so Earth's gravity pulls the cup down
9. A; the net force is acting in an upward direction
10. A; position 1
11. A; the gravitational force between two objects depends on their masses
12. C; the chemical potential energy of the spring is greatest at position 4
13. C; hand-held compass
14. C; a person skiing down a hill
15. A; the ions will repel each other
16. A; position A
17. three properties of magnets are attraction because they attract certain materials, repulsion because magnetic poles repel, and directive because a magnet that is freely suspended will always point in a north-south direction.
18. to increase the strength of an electromagnet you can either increase the strength current or increase the number of windings.
i hope this helps :)
Related Questions
For the reaction magnesium plus hyrdogen chloride yeilds hydrogen and magnesium chloride, calculate the percent yield of magnesium chloride if 100. G of magnesium react with excess hydrochloric acid to yield 330. G of magnesium chloride
Answers
Answer:
Percentage yield of MgCl₂ = 83.4%
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
Mg + 2HCl —> MgCl₂ + H₂
Next we shall determine the mass of of Mg that reacted and the mass of MgCl₂ produced from the balanced equation. This can be obtained as follow:
Molar mass of Mg = 24 g/mol
Mass of Mg from the balanced equation = 1 × 24 = 24 g
Molar mass of MgCl₂ = 24 + (35.5×2)
= 24 + 71
= 95 g/mol
Mass of MgCl₂ from the balanced equation = 1 × 95 = 95 g
SUMMARY:
From the balanced equation above,
24 g of Mg reacted to produce 95 g of MgCl₂.
Next, we shall determine the theoretical yield of MgCl₂. This can be obtained as follow:
From the balanced equation above,
24 g of Mg reacted to produce 95 g of MgCl₂.
Therefore, 100 g of Mg will react to produce = (100 × 95)/24 = 395.83 g of MgCl₂.
Thus, the theoretical yield of MgCl₂ is 395.83 g
Finally, we shall determine the percentage yield of MgCl₂. This can be obtained as follow:
Actual yield of MgCl₂ = 330 g
Theoretical yield of MgCl₂ = 395.83 g
Percentage yield of MgCl₂ =?
Percentage yield = Actual yield /Theoretical yield × 100
Percentage yield = 330 / 395.83 × 100
Percentage yield of MgCl₂ = 83.4%
For the formation of hydrogen iodide, H2(g) + 12(g) - 2HI(g) the value of the
equilibrium constant at 700K is 54.7. If one mole of H2 and one mole of 12 are the
only materials initially present, what will be the equilibrium concentrations of H2,
12, and HI.
Answers
Answer:
t 700 K, the equilibrium constant for the reaction;
H
2(g)
+I
2(g)
⇌2HI
(g)
is 54.8.
If 0.5 mol litre
−1
of HI
(g)
is present at equilibrium at 700 K, what are the concentrations of H
2(g)
and I
2(g)
assuming that we initially started with HI
(g)
and allowed it to reach equilibrium at 700 K.
What my happen in the ecosystem of the fox was removed
Answers
Answer:
the popilation of mice will increase, since the fox was their only predator. and the population of snakes will decrease. since the fox was its only food source.
(hope this helps)
define sedimentary, metamorphic, igneous
Answers
Answer:
these are all types of rocks
sedimentary are formed through the accumalation of different material from earths surface. Like the grand Canyon!
Metamorphic rocks are formed from heat, preasure, or a combination. Found mostly near tectonic plates meet.
Igneous are molten rock.
Explanation:
Sedimentary- a rock that has formed from sediment deposited by water or air
Metamorphic- a rock that has transformed by heat,pressure,or other natural causes
Igneous- a rock that has been solidified by lava or magma
Can somebody help me please! Help would be much appreciated :))
Answers
Answer:
The first picture shows how the two H athoms finds each other. The second one, how these H athoms start's to form a covalent bond describing it by Lewi's estructure. And the last one, shows how the two athoms of H formed an H2 molecula.
Explanation:
What is the molarity of the solution of Sodium hydroxide, if 35 ml of 0.1 M HCl is used in the titration of 25 ml of the barium hydroxide solution
Answers
Answer: The molarity of [tex]Ba(OH)_2[/tex] is 0.07 M
Explanation:
According to the neutralization law,
[tex]n_1M_1V_1=n_2M_2V_2[/tex]
where,
[tex]n_1[/tex] = basicity [tex]HCl[/tex] = 1
[tex]M_1[/tex] = molarity of [tex]HCl[/tex] solution = 0.1 M
[tex]V_1[/tex] = volume of [tex]HCl[/tex] solution = 35 ml
[tex]n_2[/tex] = acidity of [tex]Ba(OH)_2[/tex] = 2
[tex]M_2[/tex] = molarity of [tex]Ba(OH)_2[/tex] solution = ?
[tex]V_2[/tex] = volume of [tex]Ba(OH)_2[/tex] solution = 25 ml
Putting in the values we get:
[tex]1\times 0.1\times 35=2\times M_2\times 25[/tex]
[tex]M_2=0.07[/tex]
Therefore, molarity of [tex]Ba(OH)_2[/tex] is 0.07 M
2 Hgo 2 Hg + O2
1. How many grams of mercury (Hg) can be
produced from 3.55 moles of Hgo?
Answers
Answer:
712 moles of Hg are produced
Explanation:
Based on the reaction:
2HgO → 2Hg + O₂
Where 2 moles of HgO reacts producing 2 moles of Hg and 1 mole of O₂
To solve this question we need to find the moles of Hg produced, then, using its molar mass:
Moles Hg:
3.55mol HgO * (2 mol Hg / 2 mol HgO) = 3.55 mol Hg
Grams -Molar mass Hg: 200.59g/mol-:
3.55mol Hg * (200.59g/mol) =
712 moles of Hg are produced
When using pH paper, the pH of a solution can be determined by looking at the _______ of the paper.
Answers
Colour
Hope this helps
What was the main purpose of the Colosseum in Rome?
It served as a space for public debates.
It was a place dedicated to the many gods.
It was used by leaders to address the citizens.
It was used to provide entertainment for the public.
Answers
Answer:
It was used to provide entertainment for the public.Explanation:
The Colosseum was basically an amphitheatre. It was a stage area where the public can see entertainment and concerts. The public also viewed executions of people who committed very bad crimes. The answer to the question is It was used to provide entertainment for the public.
ANWSER:It was used to provide entertainment for the public.
it is righit i made sure i di test got 100%d
Use the following terms in the same sentence chemical reaction and precipitate
Answers
Answer: Precipitate is a sign that a chemical reaction has occurred.
D. conduction and induction
8. Which phrase describes grounding?
A. charging an object by polarization
B. providing a safe path for electrons to flow
C. changing a substance from a conductor to an insulator
D. using a device that prevents the flow of electric current
Answers
The answer that you are looking for is
Answer:
B
Answer:
D
Explanation:
using a device that prevent the flow of electric current.
This is your answer because it describes it
The Beryllium (Be) atom has 4 protons, 4 electrons (2 valence e- ), and 5 neutrons. It is on the 2nd period, so it has two electron shells
Answers
(diagram below)
1. has two electron shells, so draw two rings around the nucleus
2. has 4 electrons, and since the first shell always has two the second shell would have 2 as well (to add up to four). this makes sense, because the description says that Be has 2 valence electrons
3. Draw 4 protons inside the grey circle (the nucleus)
4. Draw 5 neutrons inside the grey circle too (the nucleus)
they don't have to be in any particular order, hope this helps!
Beryllium (Be) atom has 5 neutrons, 4 electrons and 4 protons. It has two electron shells as it is in the second period of the periodic table.
Only two electrons can fit in the first shell, which is the innermost shell. Beryllium has two electrons in its initial shell. There are additionally 2 electrons in the second shell, which is the outermost shell for beryllium. Valence electrons are the moniker for these outermost electrons.
The electron configuration of beryllium is 1s² 2s², where the superscript refers to the number of electrons in each orbital and shell. The two electrons in the 1s orbital of the first shell are denoted by the symbol 1s², while the two electrons in the 2s orbital are denoted by the symbol 2s².
Learn more about electron configuration, here:
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#SPJ6
Please help!! I'll name you brainliest!!
Answers
Answer:
the awnsers are A and C
Explanation:
because
How are different ions determined?
Answers
Someone please help me with this, i'll give you the brainliest answer and give you a 5 star rating!
Answers
The useful energy a light bulb gives out is
(a). kinetic energy (b) chemical energy (c) light energy
science subject
Answers
Answer:
Light bulb gives light energy which is usefull
Answer:
(c) light energy
Explanation:
As bulb is used for giving light and hence the energy that it gives is light energy.
H2O2 → H2O + O2
This is showing the reaction that we used in elephant’s toothpaste. Write and balance this equation on your own sheet of paper. If 24.53 g of hydrogen peroxide decompose, how many grams of water are produced.
Answers
Answer:
75.47
Explanation:
AS WE CANT WEIGHT AIR THE ANSWER IS CORRECT
the usa flag..........
Answers
Answer:
lol
Explanation:
By what factor does the average kinetic energy of helium atoms in a balloon change as the helium gas is heated from -100.0°C to 73°C? Show all calculations.
Answers
Answer:
Explanation:
is it possible for a balloon with initial pressure of 200 spa to naturally expand ... a sample of argon gas is at pressure 124 kpa and a temp. of 24 degrees C in a ... calculate volume that 2.25 moles of oxygen gas will occupy at standard temp. and pressure ... explain how avg kinetic energy of helium atoms changes as the temp ...
Why is it true to say that calcium carbonate
has both ionic and covalent bonds? the
Answers
Answer:
Calcium carbonate (CaCO3), essentially, is an ionic compound having the bivalent calcium and carbonate ions.
But the carbonate anion is a polyatomic species. The carbon atom is bonded to all the three oxygen atoms by covalent bonds - two carbon-oxygen single bonds and one carbon-oxygen double bond. Owing to resonance, the three carbon-oxygen bonds are also of equal length in the carbonate anion.
Any salt having a polyatomic ion invariably contains both ionic and covalent bonds.
How do you create a sedimentary
rock?
Help please!!!!15 points
Answers
How many moles are in 1.6g HCl ?
Answers
Answer:
0.0438825768068512
Explanation:
use a calculator online, you wont have to wait
A plant releases oxygen into the ground through its roots. True or false
Answers
Answer:
false
Explanation:
This statement is false because plants release waste material, like oxygen, through small holes in the plants leaves.
Sound wave a has lower frequency than sounds wave b but both waves have the same amplitude . What must also be true of these two waves ?
Answers
Explanation:
Higher the frequency smaller will be the wavelength. Higher frequency have shorter wavelength and lower frequency waves have larger wavelength. Also, Beats are formed by the superposition of two waves with slightly different frequencies but with similar amplitudes. In time, waves switch between constructive interference and disruptive interference, giving the resultant wave a time-varying amplitude.
The true statement about these two waves is option C. Wave A has a lower pitch.
Sound waves:
Sound waves when traveling via air are known as longitudinal waves .
Since sound passes via air, the particles of air does not vibrate in a transverse manner. Also, amplitude controls the loudness while on the other hand, frequency controlled the pitch. That means, the more frequent the higher should be the pitch.
Therefore, the correct option is C.
Learn more about the wave here: https://brainly.com/question/1820914
Which processes occur when energy is removed from a substance
Answers
Answer:
Note that melting and vaporization are endothermic processes in that they absorb or require energy, while freezing and condensation are exothermic process as they release energy.
A container of gas is initially at 0.500 atm and 298 K. What will the pressure be at 398 K?
Answers
Answer:
5
Explanation:
What causes Earth’s major wind patterns?
Question 1 options:
Radiant energy from the sun strikes Earth unevenly.
The density of ocean water changed wind patterns
The latitudes of different areas
The Earth is spinning
Answers
Answer:
A.
Explanation:
The sun unevenly hits the Earth, causing wind to form and move around the poles; never constant.
Answer:
A is correct i just took the quiz and got it right
Explanation:
Phosphates are formed when phosphorus reacts with
A. carbon.
B. oxygen.
C. nitrogen.
Answers
Option B is correct. Phosphates are formed when phosphorus reacts with Oxygen
A phosphate group is formed from the bonding of four oxygen atoms to a phosphorous atom. The chemical reaction is as shown:
P + O₄ -> PO₄
P is the symbol of phosphorus
O is the symbol of oxygen
When both elements combine, they form phosphates.
Hence we can conclude that Phosphates are formed when phosphorus reacts with Oxygen
Learn more here: https://brainly.com/question/13652744
(5 x 10-21) - (4 x 10-22)
Answers
Answer:
29 and 18
Explanation:
Answer:
11
Explanation:
5×10-21 = 29
4×10-22 = 18
29 - 18 = 11
which one of these is NOT a unit for a reaction rate. 1) g/mL 2) M/min
Answers
G/ml is not a unit of time this the answer