Answer:
See explanation
Explanation:
The question is incomplete because the image of the alcohol is missing. However, I will try give you a general picture of the reaction known as hydroboration of alkenes.
This reaction occurs in two steps. In the first step, -BH2 and H add to the same face of the double bond (syn addition).
In the second step, alkaline hydrogen peroxide is added and the alcohol is formed.
Note that the BH2 and H adds to the two atoms of the double bond. The final product of the reaction appears as if water was added to the original alkene following an anti-Markovnikov mechanism.
Steric hindrance is known to play a major role in this reaction as good yield of the anti-Markovnikov like product is obtained with alkenes having one of the carbon atoms of the double bond significantly hindered.
A foam square has a mass of 25 g and a volume of 90 mL. What is the density?
Answer:
The answer is 0.28 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
So we have
[tex]density = \frac{25}{90} = \frac{5}{18} \\ = 0.277777...[/tex]
We have the final answer as
0.28 g/mLHope this helps you
CAN SOMEONE PLEASE HELP ME ASAP PLEASEE ANYBODY LITERALLY ANYONE OUT THERE PLEASE
It is the number of protons that determine
determine what?
Explain how the igneous rock granite forms. Then tell how the granite might become the sedimentary rock sandstone and then the metamorphic rock quartzite.
Answer:
There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle. Sedimentary Rocks Sedimentary rocks are formed from pieces of other existing rock or organic material. There are three different types of sedimentary rocks: clastic, organic (biological), and chemical. Clastic sedimentary rocks, like sandstone, form from clasts, or pieces of other rock. Organic sedimentary rocks, like coal, form from hard, biological materials like plants, shells, and bones that are compressed into rock. The formation of clastic and organic rocks begins with the weathering, or breaking down, of the exposed rock into small fragments. Through the process of erosion, these fragments are removed from their source and transported by wind, water, ice, or biological activity to a new location. Once the sediment settles somewhere, and enough of it collects, the lowest layers become compacted so tightly that they form solid rock. Chemical sedimentary rocks, like limestone, halite, and flint, form from chemical precipitation. A chemical precipitate is a chemical compound—for instance, calcium carbonate, salt, and silica—that forms when the solution it is dissolved in, usually water, evaporates and leaves the compound behind. This occurs as water travels through Earth’s crust, weathering the rock and dissolving some of its minerals, transporting it elsewhere. These dissolved minerals are precipitated when the water evaporates. Metamorphic Rocks Metamorphic rocks are rocks that have been changed from their original form by immense heat or pressure. Metamorphic rocks have two classes: foliated and nonfoliated. When a rock with flat or elongated minerals is put under immense pressure, the minerals line up in layers, creating foliation. Foliation is the aligning of elongated or platy minerals, like hornblende or mica, perpendicular to the direction of pressure that is applied. An example of this transformation can be seen with granite, an igneous rock. Granite contains long and platy minerals that are not initially aligned, but when enough pressure is added, those minerals shift to all point in the same direction while getting squeezed into flat sheets. When granite undergoes this process, like at a tectonic plate boundary, it turns into gneiss (pronounced “nice”). Nonfoliated rocks are formed the same way, but they do not contain the minerals that tend to line up under pressure and thus do not have the layered appearance of foliated rocks. Sedimentary rocks like bituminous coal, limestone, and sandstone, given enough heat and pressure, can turn into nonfoliated metamorphic rocks like anthracite coal, marble, and quartzite. Nonfoliated rocks can also form by metamorphism, which happens when magma comes in contact with the surrounding rock. Igneous Rocks Igneous rocks (derived from the Latin word for fire) are formed when molten hot material cools and solidifies. Igneous rocks can also be made a couple of different ways. When they are formed inside of the earth, they are called intrusive, or plutonic, igneous rocks. If they are formed outside or on top of Earth’s crust, they are called extrusive, or volcanic, igneous rocks. Granite and diorite are examples of common intrusive rocks. They have a coarse texture with large mineral grains, indicating that they spent thousands or millions of years cooling down inside the earth, a time course that allowed large mineral crystals to grow.
Alternatively, rocks like basalt and obsidian have very small grains and a relatively fine texture. This happens because when magma erupts into lava, it cools more quickly than it would if it stayed inside the earth, giving crystals less time to form. Obsidian cools into volcanic glass so quickly when ejected that the grains are impossible to see with the naked eye. Extrusive igneous rocks can also have a vesicular, or “holey” texture. This happens when the ejected magma still has gases inside of it so when it cools, the gas bubbles are trapped and end up giving the rock a bubbly texture. An example of this would be pumice.
Explanation:
oh and also nice profile pic :P
An atom has a mass number of 43 and an
atomic number of 23. How many protons
does it have?
Answer:
23 because the atomic number is base on protons and electrons and the neutrons is 20 hope it help
how are subtances dissolved ?
Answer: A solute dissolves because its particles interact with the particles of a solvent. Anything that allows more solvent to touch more solute will cause a solute to dissolve more quickly. Small pieces of a substance dissolve faster than large pieces.
Sugar is added to iced tea and the contents are stirred until all of the sugar dissolves. How would the tea now be classified?
One of the uses of methanol (CH3OH) in dilute form is as a windshield washer antifreeze. In pure form, methanol has a molar concentration of 24.7M. How many moles are contained in 500 mL of solution?
Mole itself is the number of particles contained in a substance
1 mole = 6.02.10²³ particles
Mole : the ratio of the amount of substance mass and its molar mass
[tex]\large{\boxed{\boxed{\bold{mole=\frac{mass}{molar\:mass}}}}[/tex]
Molarity is a way to express the concentration of the solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]
Molar concentration of methanol=24.7 M
Volume of solution = 500 ml = 0.5 L
[tex]\tt mol=M\times V\\\\mol=24.7\times 0.5\\\\mol=12.35[/tex]
After stirring salt in a container of water, the salt will dissolve. When adding more salt, eventually the salt will not dissolve. Which of the following refers to a substance that can no longer dissolve in a liquid? *
A. boiling point
B. melting point
C. saturation point
D. all of these
Answer: C. Saturation point
Explanation:
10. If the number of particles in the left box above were doubled, what would happen to the pressure of the
gas? Explain.
A. The pressure of the gas on the left would decrease because the number of collisions would also
decrease.
B. The pressure of the gas on the left stay the same because the number of collisions would also be the
same
C. The pressure of the gas on the left would decrease because the number of collisions would increase.
D. The pressure of the gas on the left would double because the number of collisions would also double.
Answer:
D. The pressure of the gas on the left would double because the number of collisions would also double.
Explanation:
According to Boyle’s law, the pressure of a gas is inversely proportional to its volume.
As the number of particles was doubled in the left box, the particles have less space for movement as the volume occupied by gas particles has decreased and it will lead to the collision of gas particles with the walls of the container.
As the volume decreases as gas particles were doubled and so the pressure of the gas on the left would double.
Hence, the correct answer is "D. The pressure of the gas on the left would double because the number of collisions would also double."
why are lithium and sodium similar
Answer:
Lithium, sodium, potassium, rubidium, and cesium are all part of a group called the alkali metals. ... They are all soft metals in elemental form and they all react violently with water. They react so strongly because they all readily lose an electron to form the +1 cation very easily.
The orbital diagram shows the valence electrons of sulfur, which has 16 electrons. If the electrons were added to the atom one at a time, which would be the last electron to occupy an orbital?
Answer:
3px
Explanation:
The electronic configuration of sulphur is given as;
1s2 2s2 2p6 3s2 3px2 3py1 3pz1.
Recall that in accordance with Hund's rule, electrons occur singly first before pairing takes place during the filling of degenerate orbitals.
The last sub-level into which electrons are filled in sulphur is the 3p sub-level having three degenerate orbitals, 3px, 3py and 3pz.
According to Hund's rule, these levels are first singly filled before pairing begins. Hence the last electron in sulphur goes into the 3px orbital.
Answer:
3px
Explanation:
The electronic configuration of sulphur is given as;
1s2 2s2 2p6 3s2 3px2 3py1 3pz1.
Recall that in accordance with Hund's rule, electrons occur singly first before pairing takes place during the filling of degenerate orbitals.
The last sub-level into which electrons are filled in sulphur is the 3p sub-level having three degenerate orbitals, 3px, 3py and 3pz.
According to Hund's rule, these levels are first singly filled before pairing begins. Hence the last electron in sulphur goes into the 3px orbital.
Explanation:
One hundred students were surveyed about who they would vote for. What is
the best way to display the results? Explain your answer.
if the force of gravity blank the weight of an object will blank
Determine the average atomic mass of the following mixture of isotopes of Potassium:
(93.12%) 38.963 amu
(6.88 %) 40.962 amu
Answer
the first one (im pretty sure)
Explanation:
A lunar eclipse is when the sun goes in front of the Moon?
Answer:
Explanation: When the Moon passes between Sun and Earth, the lunar shadow is seen as a solar eclipse on Earth. When Earth passes directly between Sun and Moon, its shadow creates a lunar eclipse. Lunar eclipses can only happen when the Moon is opposite the Sun in the sky, a monthly occurrence we know as a full Moon. Hope this helps and u have a good day <3
TRIPLE POINTS!!! I NEED HELP!!! PLEASE EXPLAIN TOO!!! What is the energy of a quantum of light with a frequency of 4.31 x 1014 1/s or Hz?
Answer:
The answer is
[tex]2.86 \times {10}^{ - 19} \: J[/tex]
Explanation:
The energy of a quantum of light can be found by using the formula
E = hfwhere
E is the energy
f is the frequency
h is the Planck's constant which is
6.626 × 10-³⁴ Js
From the question
f = 4.31 × 10¹⁴ Hz
We have
E = 4.31 × 10¹⁴ × 6.626 × 10-³⁴
We have the final answer as
[tex]2.86 \times {10}^{ - 19} \: J[/tex]
Hope this helps you
Which of the following properly explains what takes place when light hits polarized film?
A) The intensity of the light is simply dimmed
B)The planes of light become scattered
C)The scattered light has either the horizontal plane or the vertical plane blocked
D)The intensity of the light is brighten
Answer:
C)The scattered light has either the horizontal plane or the vertical plane blocked
Explanation:
When light becomes plane polarized, it means that light is made to vibrate in only one plane.
Light usually vibrate in vertical and horizontal directions but when light becomes polarized, either the vertical or horizontal direction is blocked and it is made to vibrate in only one direction
Calculate the answer. Express It In scientific notation. All answers should have the correct number of significant figures.
(4.9 x 10^-2) (9.80 x 10^2) =
48.02
48
48 x 10^-1
4.8 x 10^1
Answer:
4.8 x 10^1
Explanation:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 10. If the decimal is being moved t the right, exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
I hate chemistry please help
Answer:
Love it because Love it
Explanation:
Calculate the volume of this irregular solid to the nearest cubic centimeter.
What is the volume of the key?
Answer:
The answer is 8cm
Explanation:
:)
Answer:
8 cm
Explanation:
Carbon and hydrogen forms three different compounds A, B and C in which the percentage of carbon are 75%, 85.7% and 92.3% respectively. Which law of chemical composition can be illustrated with these data?
Answer:
Law of multiple proportions
Explanation:
The law which is illustrated with the data suggests the law of multiple proportion.
The combining elements are carbon and hydrogen;
Law of multiple proportions states that "if two element combine together to form tow or more different compounds, the masses of one of the elements which separately combine with a fixed mass of the other element are in a simple ratio".
Let us prove the law of multiple proportion:
In A;
C = 75% H = 25% = 3:1
B;
C = 85.7 H =14.3 = 6:1
C;
C = 92.3 H = 7.7 = 12:1
We see that both carbon and hydrogen have a fixed ratio.
How will you know that a
mixture is a homogeneous or
heterogeneous mixture?
Please help anyone??
Answer:
6 sulfur atoms
Explanation:
The subscripts right after each element tell you how many elements are present in the ion. If there are parentheses, the subscript outside of them applies to all the elements in the parentheses. You multiply the subscript of the element by the subscript of the ion (the one outside the parentheses)
2 x 3 = 6 S
Seaweed attached to rocks in the ocean performs photosynthesis underwater. Which statement best explains how some seaweed can survive in very deep and dark places in the ocean? It can use a small amount of sunlight for photosynthesis. It can use a small amount of sunlight for photosynthesis. It moves to the upper levels of the ocean to get sunlight for photosynthesis. It moves to the upper levels of the ocean to get sunlight for photosynthesis. It does not need any sunlight to perform photosynthesis. It does not need any sunlight to perform photosynthesis. It produces its own sunlight to perform photosynthesis. It produces its own sunlight to perform photosynthesis.
Answer:
It can use a small amount of sunlight for photosynthesis
Explanation:
Seaweeds are a group of marine plants/algae that grow attached to rocks underwater. However, despite their depth underwater, they still perform photosynthesis, which is a process that requires energy from sunlight.
Seaweeds are able to perform photosynthesis underwater because they are efficient users of sunlight energy. Hence, they require only a small amount of sunlight that penetrates the ocean to perform photosynthesis.
what is the answer to 2.5 * 22.5
Emma wants to go swimming the first day the pool opens in May, but she is worried it will be too cold since summer only just started. She only likes to swim in the water if the pool is at least 82°F. The thermometer in the pool reads 24°C. Is the pool warm enough for Emma to swim in? Show all work to support your answer.
Answer:
the water is not warm enough for her
Explanation:
Given that
Her preferred temperature = 82°F
Thermometer in water reads = 24°C
Convert the preferred temperature to °C
°C=5/9 (82-32)
°C = 27.8 °C
Hence the water is not warm enough for her
The water is not warm enough for her to swim in.
She loves to swim in water at temperature = 82°F.Thermometer in water reads = 24°C.We have to convert Emma's preferred temperature to °C
°C= 5/9 x (F - 32)
°C=5/9 (82-32)
°C = 27.8
Therefore the temperature is 27.8°C
This means that the temperature of the water is not warm enough for her
to swim in.
Read more about Temperature here https://brainly.com/question/1852859
What are the 2 types of lava?
Answer:
pahoehoe and aa
Explanation:
this is real and is no joke
What is the rule of zero charge?
Answer:
The nonmetal atoms accept electrons and form ions with a negative charge, called anions. When an ionic compound forms, the total charge on the atoms adds up to zero. This is known as the rule of zero charge.
Explanation:
Elements can be described by their properties. Some of these properties are physical properties and some are chemical properties Observe the list provided. Which one of these contains ONLY Cchemical properties
A) C,E,F
B) B,C,E
C) B, E, F
D) C,D,E
Its a c,e,f
Sadly i got it wrong
Flammability, Ability to rust and Ability to tarnish (C,E,F) are chemical properties of an element.
The property of an element is the characteristic feature of that element which helps us to differentiate it from another element.
We have
The Physical proprieties- These are features of an element which we can identify by sight and touch, Some of them include colour, hardness, boiling and ,melting point, size etcChemical properties These are the features of an element which w\e observe when the element has undergone a chemical change which changes its composition. Examples are Flammability, rust, tarnish , corrosion etc.See more here:https://brainly.com/question/2116116
Which word names melted rock and minerals found beneath Earth's crust?
A.lava
B.magma
C.rhyolite
D.gabbro
Answer:
B: Magma
Explanation:
technically magma is the name for the hot molten rock (mixed with gases and mineral crystals) that collects in chambers beneath the Earth's crust.
The crust has been the upper layer of the earth's geosphere. It has been characterized by the presence of melted rocks and minerals that are called magma. Thus, option A is correct.
What is magma?Magma has been defined as the hot semi-liquid president beneath the earth's surface in the crust layer. It has a very high temperature and is known to have many metals and minerals dissolved in it. The magma comprises metals minerals, dissolved gases, etc.
When the magma from the magma chambers flows outwards on the earth's surface then it is called lava. This lava on cooling produces igneous rocks. This event of magma explosion and lava formation along with other gases from a mountainous surface is called volcanic eruption.
Therefore, option A. melted rock and minerals in Earth's crust is called magma.
Learn more about magma, here:
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