Anyone help me answer this please anyone

Answer:

changes that dont result in the formation of new substance with new properties.

Answer:

That would be the mass.

Answer:

The usage of gold is generally avoided in semiconductor technology, since it acts as a deep-level trap and recombination center, i.e. charge carriers of opposite sign do recombine at Au defects in Si and get lost to the current.

We know that the electron clouds of two atoms overlapping is a bond, because that signifies that the electrons are being shared in a bond.

So, I'm going to go through some definitions of these different types of bonds, because they have very specific circumstances.

A hydrogen bond is a bond between an electronegative atom and a hydrogen molecule (which is not what this question says, this isn't stated anywhere).

A dipole is a difference in electron density on two different atoms (so this isn't even close to what the question is stating, a dipole is not even a bond)

An ionic bond is an unequal sharing of electrons between two atoms (because the question doesn't state this specific fact, then it can't be this option).

By process of elimination, we know the answer is covalent bond, but just in case, we can also look at the definition of a covalent bond: a bond that involves the sharing of electrons between atoms.

That is exactly what the question is asking for! Therefore, your answer is d. covalent bond

Answer:

A

Explanation:

Friction is a force that opposes motion.

Answer:

C

Explanation:

I guess

Answer:

c. carbon dioxide

Explanation:

its the highest percentage of gas produced compared to hydrogen, nitrogen and oxygen.

Answer:

The answer is 36 atoms

Explanation: I took the test and i got 100%

There are 36 oxygen atoms in the representation "6 C₆H₁₂O₆".

We have the expression "6 C₆H₁₂O₆", which represents 6 molecules of C₆H₁₂O₆.

The subscripts are the atomicities of the element, that is, the number of atoms of each element in 1 molecule.

There are 6 atoms of oxygen per molecule of C₆H₁₂O₆. Considering that there are 6 molecules, the total number of atoms of oxygen are:

[tex]6 Molecules \times \frac{6\ O\ atoms}{1Molecule} = 36\ O\ atoms[/tex]

There are 36 oxygen atoms in the representation "6 C₆H₁₂O₆".

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Answer:

Solution A : calcium hydroxide

Solid B : calcium oxide

Gas C : Hydrogen gas

Explanation:

i) When metals react with water they form hydroxides thus calcium hydroxide

ii) When metals eact with oxygen they form oxides.

iii) Wehn metals react with hydrochloric acid they form a salt and a gas hydrogen.

HOPE THIS HELPED

Answer:

b contains 2 or more phases

Answer:

Determine the mass of substance and it's molar mass. Divide the given mass by it's molar mass to get moles and multiply time

6.002*1023 molecules 1mole

The density of the metal beads is 12.47 g/mL (option c).

1. Determine the mass of the metal beads:

  Mass of beaker + metal beads = 205.5 g

  Mass of empty beaker = 82.0 g

  Mass of metal beads = (Mass of beaker + metal beads) - (Mass of empty beaker)

                    = 205.5 g - 82.0 g

                    = 123.5 g

2. Determine the volume of water displaced by the metal beads:

  Initial volume of water in the graduated cylinder = 60.9 mL

  Final volume of water in the graduated cylinder = 70.8 mL

  Volume of water displaced = Final volume - Initial volume

                           = 70.8 mL - 60.9 mL

                           = 9.9 mL

3. Calculate the density of the metal beads:

  Density = Mass / Volume

  Density = 123.5 g / 9.9 mL

  Density = 12.47 g/mL

Therefore, the density of the metal beads is 12.47 g/mL (option c).

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Answer:

it takes 100 gallons longer to boil then it does 1 gallon

Explanation:

brainliest please??

Answer:

there is no following so sorry

Answer: 116.12 g/mol

Explanation:

The molecular mass of a formula unit of dimethylglyoxime is calculated as 116 g/mol.

The molecular mass can be given as the sum of the mass of each element in the formula unit of the compound.

The dimethylglyoxime is the compound with molecular formula, [tex]\rm C_4H_8N_2O_2[/tex].

The mass of each element in the compound is:

Substituting the mass in the formula unit of the compound as:

[tex]\rm C_4H_8N_2O_2=4(carbon)+8(hydrogen)+2(nitrogen)+2(oxygen)\\ C_4H_8N_2O_2=4(12)+8(1)+2(14)+2(16)g\\ C_4H_8N_2O_2=116\;g[/tex]

The molecular mass of dimethylglyoxime is 116 g/mol.

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Explanation:

Silver is a chemical element with the symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal.

Answer:

military time

Explanation:

military time

#1

Heterogenous mixture mean unsimilar substances .

#2

An element is a substance made of only one type of atoms

Answer:

Volume is cut in half

Explanation:

• From boyles gas law

[tex]{ \rm{P \: \alpha \: \frac{1}{V} }} \\ \\ { \rm{P _{1}V _{1} = P_{2}V _{2} }}[/tex]

[tex]{ \rm{(1 \times V _{1}) = (2 \times V _{2})}} \\ \\ { \rm{ \frac{V _{2}}{V_{1}} = \frac{1}{2} }} \\ \\ { \boxed{ \rm{V_{2} : V _{1} = \frac{1}{2} }}}[/tex]

Answer:

microbial growth

Explanation:

food that is not properly kept at a proper temperature bacteria will grow causing spoilage

The balanced for the reaction is:

2KI + Pb(NO₃)₂ → Pbl₂ + 2KNO₃

When the equation is balanced, the number of atoms for each element on both the reactant and product sides of the equation are equal. This can be seen below:

      Reactant   Product

K         2                 2

I          2                  2

Pb      1                    1

N       2                   2

O       6                  6

Answer:

Speed = Distance × Time

A× B

Answer:

C.) 1700 Pa

Explanation:

300 k - 0.3 m^3 = 17000

Answer:

A

Explanation:

Answer:

It's the first one I think "it absorbs the other greenhouse gases and becomes more potent

Not all chemical reactions are spectacular. They do not always involve substances that you think of as chemicals like the ones in the lab or in acid rain. ... When molecules of sulfenic acid get to your eyes, they can react with the water in your eyes to produce a new substance, a form of sulfuric acid.

Answer:

Neptune is bigger than the moon

Explanation:

The circumference of the moon is 6,783.5 miles

The circumference of Neptune is 96,129 miles

This means neptunes circumference is about 14 times the size of the moons

Answer:

For a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice versa, when the temperature is held constant..

Explanation:

Hope it helps you..

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