consider an lpcvd polysilicon deposition with sih2cl2/h2 source gases. what will happen to the deposition rate if the pressure is reduced by a factor of 2 while sih2cl2 partial pressure is kept constant.

Answer:

thermal shock

Explanation:

the temperatures inside the glass jar should have continued to increase over time. Internal stresses due to uneven heating. This is also known as “thermal shock”.

In general, the thicker the glass, the more prone it will be to breaking due to the immediate differences in temperature across the thickness of glass.

Borosilicate glass is more tolerant of this, as it has a higher elasticity than standard silicon glass.

You may also note that laboratory test tubes and flasks are made with thinner walls, and of borosilicate glass, when designated for heating.

The phase change CO2(s) → CO2 (g) will be spontaneous at both high and low temperatures.

Here, correct answer will be

At high temperatures, the molecules in the solid form of carbon dioxide have enough kinetic energy to overcome the attractive forces that hold them together. This causes the solid to break apart into its gaseous form.

At low temperatures, the attractive forces between molecules become weak, resulting in the solid form of carbon dioxide breaking apart into its gaseous form. Therefore, the phase change from solid to gas will occur at both high and low temperatures.

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Answer:

The net charge on the ion is negative 1(-1)

Explanation:

Negative 1(-1)

Answer:

Knowing the units of measurement that correspond with a number can give you so much more information than a digit sitting there by itself. Units can: Help to show another person the exact amount you have.

Explanation:

Mass of HCl produced :15.59 g

Reaction

2NaCl + H₂SO₄ → 2HCl + Na₂SO₄

Excess = H₂SO₄

Limiting = NaCl

mass NaCl = 25 g

mol NaCl(MW=58.5 g/mol) :

\(\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{25}{58.5}=0.427\)

From the equation, mol ratio NaCl : HCl = 2 : 2, so mol HCl = mol NaCl =0.427

Mass of HCl(MW=36.5 g/mol) :

\(\tt mass=mol\times MW\\\\mass=0.427\times 36.5\\\\mass=15.59~g\)

i have no idea  can somebody help me too

Answer:

number of protons and neutrons

Explanation:

The best reagent for each step is NaNH2, NH2 and CH3I, and HBr.

First of all in the presence of strong base ammonia, we het the clcylated product chain elongation gives but-2-ene followed by bromination gives 2-dibromobutane.

Alkyne using NH3 gets converted into Elongated chain alkyne followed by Hbr.

The reaction of bromine with (E)-stilbene is a classic reaction performed as an example of an electrophilic addition reaction of alkenes. The reaction is stereospecific through an anti addition to the double bond. The traditional reaction uses a bromine solution in methylene chloride, which has very high toxcity.

This bromination reaction demonstrates the stereochemistry of the electrophilic addition of bromine to an alkene. The bromine in this greener approach is generated in situ and eliminates the use of methylene chloride.

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1-ethyl-4-methylcyclohexane: cis or trans is more stable isomer.

Isomers are substances with the exact same number of atoms as other compounds, meaning they share a similar empirical formula, but they differ from one another in terms of how the atoms are ordered. 0r One of two or more substances with the same chemical formula but distinct atom configurations inside the molecules, as well as potential differences in their physical and chemical characteristics. Constitutional, stereoisomers, enantiomers, and diastereomers are the several types of isomers. Lipids that are isomers or have a mass that is almost identical are called isobars.

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To measure out a volume of liquid, start by choosing the appropriate graduated cylinder and moving the ____ Bumper__ to the top ___of the graduated cylinder to protect it from breakage. Then, pour the liquid into the graduated cylinder until the__ bottom___ of the meniscus aligns with the desired volume marking when you look at the graduated cylinder from ___eye level___

Bumper to the top, until the bottom aligns, look from eye level

To measure out a volume of liquid, start by choosing the appropriate graduated cylinder and moving the bumper to the Bumper to the top of the graduated cylinder to protect it from breakage. Then, pour the liquid into the graduated cylinder until the untill the bottom aligns of the meniscus aligns with the desired volume marking when you look at the graduated cylinder from look from eye level

A liquid, solid, or gas's volume is the amount of three-dimensional space it occupies. Although there are many additional units that can be used to indicate volume, the most used ones are litres, cubic metres, gallons, millilitres, teaspoons, and ounces.

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Complete Question

To measure out a volume of liquid, start by choosing the appropriate graduated cylinder and moving the bumper to the ___ of the graduated cylinder to protect it from breakage. Then, pour the liquid into the graduated cylinder until the ___ of the meniscus aligns with the desired volume marking when you look at the graduated cylinder from ____.

Answer:

toward the hydrogen atom

Explanation:

Answer:

toward the chlorine atom.

Explanation:

took the quiz and got it correct :)

Force applied by the thrusters forced the pod to reverse course, this is determined by direction and strength of the force applied.

Thrust is a response force that can be quantified using Newton's third law. When a system expels and accelerates mass inside one direction, the accelerating mass causes the system to experience a force of same magnitude but opposite direction.

We were told because firing the thrusters slowed but did not halt the pod. If the pod collided with the space station, it would bounce and go in the other direction.

The most likely scenario as well as reason that this has occur is that the force applied by the thrusters forced the pod to reverse course. However, this is primarily determined by two factors: the direction and strength of something like the force applied.

Therefore, force applied by the thrusters forced the pod to reverse course, this is determined by direction and strength of the force applied.

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Answer:

2

Explanation:

In the equation, Cl is chlorine and there is a number "2" so that the correct answer is 2.

Answer:

two

Explanation:

elements If Actions A and B exist independent, then P(A or Bi) = P(A) Plus P(B) - P(A or B) = 7/9 is the chance that either Incident A or Event B will occur.

It is crucial to remember that two mutually incompatible events cannot coexist unless one of them has a probability of occurring, as P (A B) = P (A) P (B) for independent events, and the sole way a product may equal zero is if either of the elements is also zero.

dependent occurrences When the result of the first event affects the result of the second event, two events are dependent. The likelihood of two connected events is the.

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To balance the chemical equation PC15 + H2O → H3PO4 + HCl using linear algebra technique, we can set up an augmented matrix and solve the system of equations. Here's the step-by-step process:

Create a matrix or put it in vector form by assigning variables to P, Cl, H, O: Let's assign:

P = x (coefficient for PCl5)

Cl = y (coefficient for HCl)

H = z (coefficient for H3PO4)

O = w (coefficient for H2O)

The equation becomes: xPCl5 + yH2O → zH3PO4 + wHCl Set up the equation in matrix form:

| PCl5 | + | H2O | = | H3PO4 | + | HCl |

| 1 | + | 0 | = | 0 | + | 0 |

| 0 | + | 2 | = | 0 | + | 0 |

| 0 | + | 0 | = | 1 | + | -1 |

| 0 | + | 0 | = | 0 | + | 24 |

This gives us the augmented matrix form:

| 1 0 0 0 0 |

| 0 1 2 0 0 |

| 0 0 0 1 -1 |

| 0 0 0 0 24 |

Solve the system using row operations: Performing row operations to simplify the augmented matrix:

R2 = R2 - 2R1

R4 = R4 / 24

The simplified augmented matrix becomes:

| 1 0 0 0 0 |

| 0 1 0 0 0 |

| 0 0 0 1 -1 |

| 0 0 0 0 1 |

From the simplified matrix, we can assign values to the variables:

P = 0

Cl = 0

H = 0

O = 0

This implies that the coefficients for PCl5, H2O, H3PO4, and HCl are all zero. Enter the coefficients into the chemical equation: The balanced chemical equation is:

0PCl5 + 0H2O → 0H3PO4 + 0HCl

Therefore, the balanced equation is: PCl5 + H2O → H3PO4 + HCl (unbalanced)

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Answer:

A. Sodium (Na)

Explanation:

The total number of electrons in the outermost principal energy level of an element is called the valence electrons of that element.

Na (11)---→1s2 2s2 2p6 3s1

There 1 electron in the outermost principal energy level of Sodium. So, the number of valence electron of Sodium is 11.

Answer:

Na

Explanation:

I was learning about it recently, that dude's right, it's Sodium

Did u get the answer im taking the test rn

Answer:

The electronic configuration of ions formed are:

Li+ (2) => 1s2

Cl- (18) => 1s2 2s2 2p6 3s2 3p6

Explanation:

Lithium metal, Li will lose 1 electron to lithium ion Li+. Chlorine atom, Cl will receive the 1 electron to form the chloride ion Cl- as shown by the following equation below:

Li —> Li+ + e

Cl+ e —> Cl-

Combine both equation

Li + Cl + e —> Li+ + Cl- + e

Cancel out 'e'

Li + Cl —> Li+ Cl-

Thus, we can write the electronic configuration for the reaction as follow:

Before reaction:

Li (3) => 1s2 2s1

Cl (17) => 1s2 2s2 2p6 3s2 3p5

After reaction

Li+ (2) => 1s2

Cl- (18) => 1s2 2s2 2p6 3s2 3p6

Therefore, the electronic configuration of the ions formed are:

Li+ (2) => 1s2

Cl- (18) => 1s2 2s2 2p6 3s2 3p6

The change in the instruction caused the protein to no longer exist and is therefore denoted as option B.

This is referred to as a large biomolecules that comprise one or more long chains of amino acid residues and perform various functions in the body such as growth and repair of wornout tissues etc.

In a scenario where a gene's instructions for making a protein is changed or altered then it can cause a protein to malfunction which is referred to as mutation or to not be produced at all due to the structure being affected and is therefore the reason why option B was chosen as the correct choice.

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The full question is:

The change in the instruction caused the protein to _________.

-Be incomplete

-No longer exist

-Have the same structure

Essentially all the hydrogen nuclei that will ever exist in our universe were created during the first few minutes after the Big Bang, a period known as primordial nucleosynthesis. This process occurred when the universe was extremely hot and dense, allowing for the formation of hydrogen nuclei through a series of nuclear reactions.

During the early stages of the universe, the temperature and density were incredibly high. About three minutes after the Big Bang, the conditions became favorable for primordial nucleosynthesis, the synthesis of light atomic nuclei. At this time, the universe had cooled down enough for protons and neutrons to combine and form the simplest atomic nucleus, which is hydrogen. As the universe expanded and cooled further, other light elements like helium and trace amounts of lithium were also formed. The process of primordial nucleosynthesis involved a delicate balance between the expansion rate of the universe and the rate of nuclear reactions. If the expansion was too rapid, the nuclei would not have enough time to collide and form heavier elements. On the other hand, if the expansion was too slow, the universe would become too hot, preventing the formation of stable atomic nuclei. Fortunately, during those few minutes after the Big Bang, the conditions were just right for the creation of hydrogen nuclei. Since primordial nucleosynthesis, the universe has continued to evolve and expand. Stars and galaxies formed, leading to the synthesis of heavier elements through stellar nucleosynthesis and supernova explosions. However, the abundance of hydrogen nuclei remained relatively constant, as they were already formed in abundance during the early universe. Thus, all the hydrogen nuclei that will ever exist were created during the first few minutes after the Big Bang, marking the genesis of one of the most abundant elements in the universe.

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To find the number of molecules we must apply for Avogadro's number. This number tells us that in one mole of any substance there are 6.022x10^23 molecules. So the first thing we will do is find the moles contained in 200 grams of C6H12O6 (Glucose).

The molar mass of glucose is 180.06g/mol. So, the moles of glucose will be:

Now, we apply for Avogadro's number. So, the molecules of glucose will be:

Answer: In 200 grams of C6H12O6 there are 6.68x10^23 molecules

An Independent is a silicate structure where no silica tetrahedra share any oxygen ions. Therefore, the correct option is option D that is Independent among all the options.

The minerals known as silicates are composed of silicon and oxygen in the form of tetrahedral SiO₄⁴⁻ units that are connected in various ways.

(Si4O11)6n-n is the typical formula for double-chain silicates. By using the same oxygen, two straightforward chains are connected. An Independent is a silicate structure where no silica tetrahedra share any oxygen ions.

Therefore, the correct option is option D.

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Answer:

A. 5895 J/g*C)

Explanation:

An unknown substance weighing 42.0 g was heated from 36.0°C to 65.0°C. In this process, the substance absorbed 5895 J of energy.

Answer:

An amide.

Explanation:

Amides are functional groups, in which a carbonyl atom is linked by a single bond to a nitrogen atom and either a hydrogen or a carbon atom. These defining traits single this functional group out as an amide.

Answer: the mole

Explanation:

The mole is the unit of amount in Chemistry.

It provides a bridge between the atom and the macroscopic amounts of material that we work with in the laboratory.