Rupert had three substances. A brown substance was a liquid at room
temperature. He hit each of the other two with a hammer. A blue crystal
cracked but did not break. A silver substance flattened but did not crack.
Which two statements could be true?
A. The brown substance is ionic
B. The silver substance is ionic
C. The brown substance is molecular
D. The blue substance is ionic

Answer:

A. Nucleic Acids

Explanation:

This is because the nucleotides combine with each other to form a polynucleotide know as DNA or RNA.

Answer:

adding a catalyst will increase the reaction rate.

Explanation:

im like 95% sure thats right.

Answer:

A. C. D

Explanation:

ap ex

Answer:

25°C

Explanation:

Combined Gas Law (P₁V₁)/T₁ = (P₂V₂)/T₂

(0.947 atm)(150 mL)/25°C = (0.987 atm)(144mL)/T₂

5.682 = 142.128/T₂

T₂ = 142.128/5.682

T₂ = 25.0137272756°C = 25°C

\(2.3+0.005+0.234+60.12=\boxed{62.659 \text{ g}}\)

Answer:  Soundwaves travel as longitudinal or transverse waves depending on the temperature of the medium.

Explanation: i think its C

No, Ag₂SO₄ will not precipitate when 100ml of .050M AgNO3 is mixed with 10ml of 5x10-2 m Na₂SO₄ solution because the precipitate is made only in an aqueous solution.

Precipitation is the solid extract that is collect in a place. Precipitate is the concentration of the substance in a solution in a specific place.

Thus, No, Ag₂SO₄ will not precipitate when 100ml of .050M AgNO3 is mixed with 10ml of 5x10-2 m Na₂SO₄ solution because the precipitate is made only in an aqueous solution.

Learn more about precipitation

https://brainly.com/question/18109776

#SPJ1

Answer:

B

Explanation:

I took the assessment

1. The IUPAC name of N is nitrogen.

2. Nitrogen dioxide

3.The IUPAC name of O is oxygen

4.The IUPAC name of OH is hydroxyl.

The IUPAC name of ·0 is a radical. It is commonly found in organic chemistry and plays an important role in many reactions.

IUPAC names for the given compounds are:1.1. N: Nitrogen

The IUPAC name of N is nitrogen.

It is a non-metal and belongs to group 15 in the periodic table. It has an electronic configuration of 1s2 2s2 2p3.1.2. NO2: Nitrogen dioxide

Explanation: NO2 is a chemical compound that is formed by the combination of nitrogen and oxygen. It is a reddish-brown gas that has a pungent odor.

The IUPAC name of NO2 is nitrogen dioxide.1.3. O: Oxygen

Explanation: The IUPAC name of O is oxygen.

It is a non-metal and belongs to group 16 in the periodic table. It has an electronic configuration of 1s2 2s2 2p4.

X: UnknownExplanation: No IUPAC name can be given to an unknown compound as the structure and composition are not known.

Y: Hydroxyl Explanation: The IUPAC name of OH is hydroxyl.

It is a functional group that is composed of an oxygen atom and a hydrogen atom (-OH). It is commonly found in alcohols and phenols. ·0: RadicalExplanation: A radical is a molecule or an ion that contains an unpaired electron.

for more question on electronic configuration

https://brainly.com/question/26084288

#SPJ8

Note: The complete question is given below

Provide the IUPAC names for the following compounds:

\(CH_3CH_2CH(CH_3)CH_2CH_2CH_2CH_3\)

C6H5CH(CH3)2

H2NCH2CH2CH2CH2CH2NH2

CH3CH2CH2CH2CH2OH

CH3CH2CH2CHOHCH3

Answer:

b) Adding 0.075 moles of HCl

Explanation:

A buffer is defined as the aqueous mixture of a weak acid and its conjugate base or vice versa (Weak base with its conjugate acid).

The buffer of the problem is the acetic acid / lithium acetate.

The addition of any moles of the acid and the conjugate base will not destroy the buffer, just would change the pH of the buffer. Thus, a and c will not destroy the buffer.

The addition of an acid (HCl) or a base (NaOH), produce the following reactions:

HCl + LiC₂H₃O₂ → HC₂H₃O₂ + LiCl

The acid reacts with the conjugate base to produce the weak acid.

And:

NaOH + HC₂H₃O₂  →NaC₂H₃O₂ + H₂O

The base reacts with the weak acid to produce conjugate base.

As the buffer is 1.0L, the moles of the species of the buffer are:

HC₂H₃O₂ = 0.300 moles

LiC₂H₃O₂ = 0.045 moles

The reaction of HCl with LiC₂H₃O₂ consume all LiC₂H₃O₂ -because there are an excess of moles of HCl that react with all LiC₂H₃O₂-

As you will have just HC₂H₃O₂ after the reaction, the addition of b destroy the buffer.

In the other way, 0.0500 moles of NaOH react with the HC₂H₃O₂ but not consuming all HC₂H₃O₂, thus d doesn't destroy the buffer.

C. It can help us track how quickly element of the climate are changing

Answer:Science is important because science

is the the way to know about other things that we didn't know about our planet and many other things.

Explanation:thank you hope it

Answer: is the benefit worth the cost?

Explanation: for those on edge :)

Answer:

Is The Benefit Worth The Cost?

Explanation:

The concentration of copper sulfate solution is 11ppm.

The calibration curve for copper sulfate is shown in the figure below.

copper sulfate is a compound of copper and sulfuric acid with the chemical formula CuSO4.To find the concentration of copper sulfate solution with an absorbance reading of 0.280 at 650 mm, we can use the equation:

Concentration (ppm) = m x absorbance + b,

where m is the slope of the graph and b is the y-intercept of the graph.

Using the graph, we can calculate m and b as follows:

\(m =\frac{ (20 - 0)}{(0.750 - 0.250)} = 40\\b = 0 - (40 *0.250) = -10\)

Therefore, the concentration of copper sulfate solution with an absorbance reading of 0.280 at 650 mm is:

Concentration (ppm) = \(40 * 0.280 - 10 = 11 ppm\)

learn more about copper sulfate Refer:brainly.com/question/22560035

#SPJ4

Answer:

1) 0 C2H4O2 + 0 O2 -> 0 CO2 + 0 H2O (balanced)

2) V2O5 + CaS -> CaO + V2S5

just additional info: V2O5 is divanadium pentaoxide

LHS (Left hand side)

V: 2

O: 5

Ca: 1

S: 1 x 5 [to balance with the right hand side of the equation]

RHS (Right hand side)

V: 2

O: 1 x 5 [to balance with the left hand side of the equation]

Ca: 1

S: 5

When you balance any elements, you have to balance the whole chemical compound.

Thus,

V2O5 + 5 CaS -> 5 CaO + V2S5

LHS CHECK:

V: 2

O: 5

Ca: 5

S: 5

RHS CHECK:

V: 2

O: 5

Ca: 5

S: 5

3) S8 + O2 -> SO2

LHS:

S: 8

O: 2

RHS:

S: 1 x 8 [to balance with LHS]

O: 2

When you balance any elements, you have to balance the whole chemical compound.

S8 + O2 -> 8 SO2

When we add 8 to the RHS, it gives us 8S, 16 O.

In order to balance that into the RHS, I need to multiply the O2 by 8, which will give 8(O2) = 16 O particles.

Therefore, S8 + 8 O2 -> 8 SO2 is the final answer for (3).

After the plastic bottle is taken out of the freezer, the amount of gas within is 0.465 L.

The cooling of the air causes the air to contract. Due to the reduced pressure, the air inside the bottle constricts. The bottle falls as a result of external pressure.

When a cold water bottle is removed from the refrigerator, the surrounding air's water vapour makes contact with the bottle's cold surface and condenses. As a result, water transitions from a gas to a liquid form.

To know more about gas visit:-

https://brainly.com/question/14812509

#SPJ1

The volume of the gas at STP would be 23.93 liters.

The volume of gas at STP (Standard Temperature and Pressure), we need to use the Ideal Gas Law, which states that PV = nRT, where P is pressure, V is volume, n is the number of moles of gas, R is the gas constant, and T is temperature. First, we need to calculate the number of moles of gas in the initial sample. We can use the formula n = PV/RT, where P is the initial pressure, V is the initial volume, R is the gas constant, and T is the initial temperature.
n = (2.31 atm) x (25.15 L) / [(0.0821 L atm/mol K) x (201 + 273.15 K)]
n = 1.067 moles

Now, we can use the molar volume of gas at STP, which is 22.4 L/mol, to calculate the volume of gas at STP.
V = n x 22.4 L/mol
V = 1.067 moles x 22.4 L/mol
V = 23.93 L
Therefore, the volume of the gas at STP would be 23.93 liters.

For more such questions on gas

https://brainly.com/question/25736513

#SPJ11

Answer:

The answer is B, in this case.

Explanation:

An isomer is a molecule with the same number of atoms as another compound, but they differ in arrangement of the atoms.

Answer:

you picked the right one the net worth of force would be 10

Explanation:

how cuz you got 1 team with 6 force then aother 1 with 4 add em up u get 10

Answer:

For a collision where objects will be moving in 2 dimensions (e.g. x and y), the momentum will be conserved in each direction independently (as long as there's no external impulse in that direction). In other words, the total momentum in the x direction will be the same before and after the collision.

Explanation:

The force of gravity points straight down, but a ball rolling down a ramp doesn't go straight down, it follows the ramp. Therefore, only the component of the gravitational force which points along the direction of the ball's motion can accelerate the ball. The other component pushes the ball into the ramp, and the ramp pushes back, so there is no acceleration of the ball into the ramp. If the ramp is horizontal, then the ball does not accelerate, as gravity pushes the ball into the ramp and not along the surface of the ramp. If the ramp is vertical, the ball just drops with acceleration due to gravity. These arguments are changed a bit by the fact that the ball is rolling and not sliding, but that only affects the magnitude of the acceleration but not the fact that it increases with ramp steepness.

Answer:

.2sb

Explanation:

according to my mind its the percentage of the question

Answer:19.6%

Explanation:

From K=0.693/t

0.693/20 =0.03465min^-1

But rate law is K =2.303/t log a/(a-x)

Substitute the value of k

0.03465=2.303/47 log a / (a-x)

Log a/ (a-x) = 0.7071

a/ (a-x) = 5.094

(a-x)/ a = 1/5.094 = 0.196

Percentage of reactants remaining after 47 minutes= 0.196× 100% = 19.6%

Answer:

Explanation:

21

The molecular geometry of a molecule whose central atom has four single bonds and two lone pairs of electrons is square planar.

The shape of the orbitals is octahedral. Two orbitals contain lone pairs of electrons on opposite sides of the central atom. The remaining four atoms connected to the central atom give the molecule a square planar shape. If there are only two bonds and one lone pair of electrons holding the place where a bond would be then the shape becomes bent. For sp3 hybridized central atoms the only possible molecular geometry is tetrahedral. If all the bonds are in place the shape is also tetrahedral.

To learn more about molecular geometry check the link below:

https://brainly.com/question/19866552

#SPJ4

Term an atom that contains 20 protons, 21 neutrons and 20 electrons has: Definition "no charge" If an atom is neutral there is one electron for every proton.

The initial temperature is 294.34°C.

The heat that the sample of Zinc gives is equal to the heat that water is absorbing. That is:

C(Zn) * m(Zn) * ΔT(Zn) = C(H2O) * m(H2O) * ΔT(H2O)

Where:

C is specific heat (Zn: 0.390J/g°C; H2O: 4.184J/g°C)

Given:

m is mass (Zn: 25.0g; H2O: 100.0g)

ΔT (Zn: ?; H2O: (27.5°C - 20.0°C = 7.50°C)

Replacing:

0.390J/g°C * 25.0g * ΔT(Zn) = 4.184J/g°C * 100.0g * 7.50

ΔT(Zn) = 321.84°C

As final temperature of Zn is 27.50°C, initial temperature is:

Initial temperature: 321.84°C + 27.50°C = 294.34°C

Hence, the initial temperature of the zinc sample at a specific heat is 294.34°C.

To know more about temperature, refer: https://brainly.com/question/15520591

#SPJ1

Answer:

1.904 ppm

Explanation:

Concentration of drug in units of ppm = mass of solute / (mass of solution ) × 1000000

mass of blood = density of blood × volume = 1.05 g / ml × 5000 ml = 5250  g

mass of solution = mass of blood + mass of solute ( statin) = 5250 + 0.01 g  = 5250.01 g

Concentration of drug in units of ppm = (0.01 g / 5250.01 g) × 1000000 = 1.904 ppm

I hope this helps!!

Answer:

It's B

Explanation:

I got it right on edjenuity

The most likely outcome of the retrofitting of a nuclear power plant is that it will be able to reprocess its used uranium fuel. Therefore, option C is correct.

A nuclear power plant is a facility that generates electricity by harnessing the heat produced by nuclear reactions. At the heart of a nuclear power plant is the reactor, where a controlled chain reaction of nuclear fission occurs.

Reprocessing is a process by which the used nuclear fuel is chemically treated to separate out and recover the unused uranium and plutonium, which can then be reused as fuel. This reduces the amount of radioactive waste produced by the plant and also extends the life of the uranium fuel.

The fission reactions to fusion reactions is not currently a viable option for power generation, and the idea that a retrofitting would eliminate radioactive wastes is unlikely, as nuclear power plants will always produce some amount of radioactive waste.

Thus, option C is correct.

To learn more about the nuclear power plant, follow the link:

https://brainly.com/question/4246037

#SPJ3