Compounds are different than elements because compounds are–
Group of answer choices

a pure substance; elements are not.

not able to be broken down into parts.

made from the same type of atoms.

combinations of two or more elements.

Answer:

The molarity is 0.4 \(\frac{moles}{liter}\)

Explanation:

The Molarity (M) or Molar Concentration is a concentration unit that indicates the number of moles of the solute per liter of solution. In other words, molarity is defined as the number of moles of solute that are dissolved in a given volume.

The Molarity of a solution is determined by the expression:

\(Molarity (M)=\frac{number of moles of solute}{volume}\)

Molarity is expressed in units (\(\frac{moles}{liter}\)).

In this case:

Replacing:

\(Molarity (M)=\frac{0.2 moles}{0.5 L}\)

Molarity= 0.4 \(\frac{moles}{liter}\)

The molarity is 0.4 \(\frac{moles}{liter}\)

Answer:

C, A, A, B, B

Explanation:

Question 5: C. continental drift

Question 6: A. new rock forms

Question 7: A. happens at deep-ocean trenches

Question 8: B. convection currents in the mantle

Question 9: B. convergent boundary

The heat of fusion of the  substance can be shown from option B.

The amount of heat energy required to transform a substance from a solid phase to a liquid phase at its melting point is known as the heat of fusion, also known as the enthalpy of fusion. The solid-liquid transition is the subject of a particular category of phase transition enthalpy.

The strong intermolecular interactions that keep a substance's particles organized into a solid lattice are dissipated during fusion, allowing the particles to change into a more disordered, fluid state.

Learn more about heat of fusion:https://brainly.com/question/30403515

#SPJ1

Answer:

In a chemical change the nature of the substance changes and it is transformed, for example when a piece of wood is burned, the carbon is being transformed into carbon dioxide. A physical change is one where the nature of matter does not vary.

I hpoe help you.

Answer:

physical changes only change the appearance of a substance not it's chemical composition .chemical changes change the substance with a new chemical formula

Explanation:

An electrochemical cell consists of two half-cells separated by a salt bridge or porous membrane that allows ions to flow freely between the two halves.

One half-cell contains an oxidizing agent, which is responsible for accepting electrons, while the other half-cell contains a reducing agent, which is responsible for donating electrons. In an electrochemical cell, the overall reaction must be balanced so that no charge accumulates in either half-cell. The equation that represents the net cell reaction for the given electrochemical cell is as follows.Co(s) + 2Ag⁺(aq) → Co⁺²(aq) + 2Ag(s)The given electrochemical cell consists of the following half-reactions:Anode: Co(s) → Co²⁺(aq) + 2e⁻Cathode: 2Ag⁺(aq) + 2e⁻ → 2Ag(s)The Co metal oxidizes to Co²⁺ ions at the anode, producing two electrons. The Ag⁺ ions are reduced to Ag metal at the cathode, receiving two electrons. These two half-reactions combine to yield the net cell equation.

To know more about electrochemical cell  visit:

https://brainly.com/question/30266715

#SPJ11

The phase of water at 0.5 atm and 100°C is gaseous phase.

Water exists in three different phases such as liquid, gas, and solid.

The phase of the given water can be determined using phase diagram at standard temperature and pressure as shown in the image uploaded.

At 0.5 atm and 100 °C, the water is still in vapour or gaseous phase.

Thus, the phase of water at 0.5 atm and 100°C is gaseous phase.

Learn more about water phase here: https://brainly.com/question/1612862

#SPJ1

Answer:

5N would be the net force if i'm correct 5N and 5N cancle each other out then all your left with would be 5N

Explanation:

BTW whats your

name-

age-

and fav color just tring to meet new people

Answer:

S

Explanation:

The symbol for entropy is S, and a change in entropy is shown as “delta” S or ΔS. If the entropy of a system increases, ΔS is positive. If the entropy of a system decreases, ΔS is negative.

Outgoing shortwave radiation depends on factors such as the angle of the Sun's rays, albedo, cloud cover, and atmospheric gases. These factors collectively determine the amount of solar radiation that is reflected, absorbed, and re-emitted by the Earth's surface, influencing the outgoing shortwave radiation.

Outgoing shortwave radiation depends on several factors. Firstly, it is influenced by the solar radiation received by the Earth's surface. The amount of solar radiation reaching the Earth is determined by the angle of the Sun's rays, which changes throughout the day and across different seasons. This means that outgoing shortwave radiation will vary depending on the time of day and the time of year.

Another important factor is the albedo, which refers to the reflectivity of different surfaces on Earth. Surfaces with high albedo, such as ice and snow, reflect more solar radiation back into space, resulting in lower outgoing shortwave radiation. Conversely, surfaces with low albedo, such as dark soil and vegetation, absorb more solar radiation, leading to higher outgoing shortwave radiation.

The presence of clouds also plays a role in outgoing shortwave radiation. Clouds can either reflect incoming solar radiation back into space or absorb and re-emit it as longwave radiation. The type and thickness of clouds, as well as their altitude, can affect the amount of outgoing shortwave radiation.

Finally, atmospheric gases such as water vapor, carbon dioxide, and ozone can also influence outgoing shortwave radiation. These gases absorb and re-emit some of the incoming solar radiation, impacting the amount of radiation that escapes back into space.

Learn more about shortwave here :-

https://brainly.com/question/31450158

#SPJ11

Answer:

B

Explanation:

its an acidic oxide, it disolves in water to form carbonic acid which is an acid

Answer:

About 0.054 moles.

Explanation:

Apply the ideal gas law. Recall that:

\(\displaystyle PV = n RT\)

Solve for n, the number of moles:

\(\displaystyle n = \frac{PV}{RT}\)

Determine the pressure of the hydrogen gas. Recall that by Dalton's Law of Partial Pressures, the total pressure is equal to the sum of the partial pressures of each individual gas:

\(\displaystyle P_T = P_\ell + P_\text{H$_2$}\)

Convert the vapor pressure of the liquid to atm (1.00 atm = 760. torr):

\(\displaystyle 18\text{ torr} \cdot \frac{1.00\text{ atm}}{760.\text{ torr}} = 0.024\text{ atm}\)

Therefore, the partial pressure of the hydrogen gas is:

\(\displaystyle \begin{aligned} P_T & = P_\ell + P_\text{H$_2$} \\ \\ (0.788\text{ atm}) & = (0.024\text{ atm}) + P_\text{H$_2$} \\ \\ P_\text{H$_2$} & = 0.764\text{ atm}\end{aligned}\)

Therefore, the number of moles of hydrogen gas present is (the temperature in kelvins is 273.15 + 20.0 = 293.2 K):

\(\displaystyle \begin{aligned} n & = \frac{PV}{RT} \\ \\ & = \frac{(0.764\text{ atm})(1.7\text{ L})}{\left(0.08206 \text{ }\dfrac{\text{L-atm}}{\text{mol-K}}\right)(293.2\text{ K})}\\ \\ & = 0.054\text{ mol H$_2$} \end{aligned}\)

The endocrine system is a complex system of glands and hormones that regulate many bodily functions and maintain homeostasis. Homeostasis refers to the body's ability to maintain a stable internal environment despite changes in the external environment. One example of the endocrine system maintaining homeostasis is the regulation of blood sugar levels by the pancreas.

For such more question on homeostasis

https://brainly.com/question/1046675

#SPJ8

To determine the mass percent of chloride in the original sample, we need to first calculate the amount of chloride present in the sample. We can do this by using the balanced equation for the reaction between chloride and silver nitrate:

AgNO3 + Cl- → AgCl + NO3-

First, we need to calculate the number of moles of silver nitrate used in the titration:

moles of AgNO3 = volume (L) x molarity (M) = 0.03083 L x 0.7890 M = 0.02439 moles

Next, we can use the balanced equation to find the number of moles of chloride:

moles of Cl- = moles of AgNO3 = 0.02439 moles

Finally, we can use the number of moles of chloride to calculate the mass of chloride in the sample:

mass of Cl- = moles of Cl- x molar mass of Cl- = 0.02439 moles x 35.5 g/mol = 0.868 g

To find the mass percent of chloride in the original sample, we divide the mass of chloride by the total mass of the sample and multiply by 100%.

mass percent of Cl- = (mass of Cl- / total mass of sample) x 100%

Since we don't know the total mass of the sample, we can use the mass of chloride we just calculated and the formula above to find the mass percent of chloride in the original sample.

mass percent of Cl- = (0.868 g / 0.1599 g) x 100% = 54.3%

So, the mass percent of chloride in the original sample is 54.3%.

To learn more about mass percent:

https://brainly.com/question/26150306

#SPJ4

The heat is absorbed when a 10 gram piece of platinum is warmed from 100 c to 150 c is 66.5 J

Energy is a sort of heat. Heat changes the condition of a substance when it is absorbed by it by weakening and rupturing the inter-particle bonds (solid to liquid for example). A phase change brought on by heat is NOT enough to raise the temperature. A reaction that absorbs heat is called endothermic.

The bulk of the body affects how much heat is absorbed. The bulk of the body directly affects how much heat energy is absorbed. where M is the body's mass and Q is the quantity of heat absorbed.

Using the equation H=cpmT and the water specific heat, the amount of heat absorbed is computed.

Given,

heat of slid platinum = 0.133

150 -100=50

heat absorbed = 0.133*10*50

= 66.5 J

Therefore , The heat is absorbed when a 10 gram piece of platinum is warmed from 100 c to 150 c is 66.5 J

To learn more about heat absorbed refer to :

https://brainly.com/question/8828503

#SPJ1

Answer:

D only

Explanation:

The products are the stuff on the right of the yield sign so the answer is D only.

Answer:C and D

Explanation: because they come after the arrow

0.69(78)Explanation:

The energy are there in one photon of orange light whose wavelength is 630nm is  \(3.15401\times10^{-19}\) Joules.

W=c/v, c=speed of light, v=frequency

\(6.3 \times 10^-7=3 \times 10^8/v\)

\(v=3 \times 10^8 / 6.3 \times 10^-7\)

\(v=4.76 X 10^14 Hz\)-frequency of the yellow light.

E=hv, h=Planck's constant,

\(E=(4.76 \times 10^14)Hz \times 6.62607×10^-34 J s\)

\(E=3.15401\times10^{-19}\) Joules- the energy of a single photon of yellow light.

Planck's constant or Planck's constant, is a fundamental physical constant of quantum mechanics. The constant gives the ratio of the energy of the photon to its frequency, and for mass-energy equivalent, the ratio of mass to frequency.

In quantum mechanics, energy is exchanged and absorbed in certain amounts called quanta. The Planck constant is a number that defines the amount of energy in these quantities and expresses how small things can be. Learn more about Planck's constant in this infographic.

To learn more about Planck's constant, refer;

https://brainly.com/question/10700482

#SPJ10

Answer:

vinegar, soft drinks, seltzer water , citrus fruits

Explanation:

Answer:

the neutralization reaction occurs

Given,

Mass required to trigger a mouse trap =157grams

Mass of mouse = 4 ounces (oz)

we need to find the largest mass of cheese a mouse should carry to not set off the trap-

Firstly, we need to convert oz into grams

⇒ 4 x 28.3 = 113.2 grams

∴Mass of cheese in grams = 113.2

For the mouse to not set off the trap, mass of mouse + mass of cheese should be less than 157 grams.

⇒113.2 + mass of cheese < 157

⇒ Mass of cheese < 157 - 113.2

Mass of cheese < 43.8 gm

Hence, the mouse should carry a cheese of 43.8 grams to not set off the trap.

To learn more refer- https://brainly.com/question/27863749

#SPJ4

The mouse should carry a 43.8 grams block of cheese in order to avoid setting off.

Given,

A mouse trap requires 157 grams of mass to set off.

Mouse weight is 4 ounces (oz)

To avoid setting off the trap, we need to determine how much cheese a mouse should be able to carry.

First, we must change an ounce into grams.

4 x 28.3 equals 113.2 grams.

The mass of cheese is 113.2 grams.

Mass of mouse plus mass of cheese must be less than 157 grams for the mouse to avoid setting off the trap.

113.2 +  cheese mass equals 157.

157 cheese mass - 113.2= 43.8 g of cheese total.

Hence, In order to avoid setting off the trap, the mouse should carry a 43.8-gram block of cheese.

To learn more about ounce conversion refer- https://brainly.com/question/13381077

#SPJ4

Answer:

Negative

Explanation:

Electron is a subatomic particle with a negative charge of -1e unlike the proton which has a positive charge of +1e

In an atom, an electron has a net negative charge revolving in orbits around the nucleus.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/13654549

#SPJ2

The original pressure of a gas that has 5.00 L of its sample expanded to 15.0 L, at which point the pressure is measured to be 0.720 atm is 2.16atm.

The pressure of a gas can be calculated using the Boyle's law equation as follows:

P1V1 = P2V2

Where;

P1 × 5 = 15 × 0.720

5P1 = 10.8

P1 = 10.8 ÷ 5

P1 = 2.16atm

Therefore, the original pressure of a gas that has 5.00 L of its sample expanded to 15.0 L, at which point the pressure is measured to be 0.720 atm is 2.16atm.

Learn more about pressure at: https://brainly.com/question/356585

Answer:

3.70 × 10³ g

Explanation:

To find the mass of the sample, multiply the volume by the density.

(55.1 cm³) × (6.72 g/cm³) = 3.70 × 10³ g

The mass of the sample will be 3.70 × 10³ g.

The term "density" refers to the mass of a material per unit volume. Density is defined by the equation d = M/V, where M stands for mass, and V for volume. Typically, density is measured in grammes per cubic centimetre.

As an illustration, water has a density of 1 gramme per cubic centimetre, whereas Earth has a density of 5.51 gramme per cubic centimetre. Kg/cubic metre is another method to express density (in metre-kilogram-second or SI units).

For instance, the air has a density of 1.2 kilogrammes per cubic metre. Textbooks and manuals provide lists of the densities of common solids, liquids, and gases. The mass of a body may be calculated from its volume using density, and vice versa. The mass is equal to the volume multiplied by the density (M = Vd), whereas the volume is equal to the mass divided by the density (V = M/d).

By dividing the mass by the acceleration of gravity, one may get a body's weight, which is typical of more practical importance than its mass.

The mass of the sample can be obtained by multiplying the volume by the density.

(55.1 cm³) × (6.72 g/cm³) = 3.70 × 10³ g

Therefore, the mass will be 3.70 × 10³ g

Read more about density, here

https://brainly.com/question/15164682

#SPJ2

Answer:

129.50 N/kg

Explanation:

125 kg + 4.50 N

129.50 N/kg

Answer:

The answer that completes the question are in BOLD:

At chemical equilibrium, the amount of PRODUCT AND REACTANT REMAIN CONSTANT because the RATES OF THE FORWARD AND REVERSE REACTIONS ARE EQUAL.

Explanation:

In a reversible chemical reaction, an equilibrium is said to be achieved when the rates of the forward reaction is equal to that of the reverse reaction. A reversible reaction is one in which products are formed from reactants simultaneously with the formation of reactants from products.

The combination of two or more substances called REACTANTS gives rise to another substance called PRODUCT, which can in turn give rise to Reactants again. With time, the rate at which the reactants give rise the products, which is called the FORWARD REACTION will be equal to the rate at which the products give rise to the reactants, which is called REVERSE REACTION. At this point, the chemical reaction is said to be in a STATE OF EQUILIBRIUM.

When the rate at which both reaction occurs becomes equal i.e. at an equilibrium state, the concentration of both the reactants and the products becomes constant i.e. no longer changes. Hence, the amount of the reactants forming the products is the same as the amount of products forming the reactants.

N.B: At chemical equilibrium, the amount of the reactants and products does not necessarily equals zero (0). It simply means that there is no net change in the concentration/amount of both reactants and products.

Period 2 elements are Lithium (Li), Berillium (Be), Boron (B), Carbon (C), Nitrogen ( N), Oxygen (O), Fluorine (Fe), Neon (Ne).

Period 3 elements are Sodium (Na), Magnesium (Mg), Aluminum (AI), Silicon (Si), Phosphorus (P), Sulfur (S), Chlorine (CI, Argon, (Ar)

Define periodic table.

All identified chemical elements are arranged in rows (referred to as periods) and columns (referred to as groups) in the periodic table of chemical elements, also known as the periodic table, in ascending order of atomic number.

Period 3 elements have a tendency toward being hard (APART FROM Group 1), glossy, and having a metallic shine. They are also solids at room temperature and pressure (apart from mercury, which is a liquid metal), and they are good electrical conductors.

All elements in period 2 experience a decrease in atomic radius, an increase in electronegativity, and an increase in ionization energy as their atomic number rises. Only two metals (lithium and beryllium) are present in Period 2, which is fewer than any other period in terms of both quantity and proportion.

To learn more about periodic table use link below:

https://brainly.com/question/1173237

#SPJ1