Which statement best describes the relationship between igneous and metamorphic rocks?
Metamorphic rocks are formed from melting igneous rocks.
O Metamorphic rocks and igneous rocks do not follow a rock cycle
Igneous rocks must go through the sedimentary process to change into metamorphic rocks.
Igneous rocks are chemically changed into metamorphic rocks because of high temperature and pressur

Answer:

There are 15 grams of copper chloride in 50 cubic centimeters of solution.

Explanation:

The statement is incorrect. The complete sentence will be presented below:

What is the mass of cooper chloride in 50 cubic centimeters of a 300 grams per cubic decimeters?

In Chemistry, a common unit for concentration is grams per cubic centimeter. A cubic decimeter equals 1000 cubic centimeters. First, we convert the given concentration into the requested unit:

[tex]c = 300\,\frac{g}{dm^{3}} \times \frac{1\,dm^{3}}{1000\,cm^{3}}[/tex]

[tex]c = 0.3\,\frac{g}{cm^{3}}[/tex]

Which means there are 0.3 grams of copper chloride per each cubic centimeter of solution.

The amount of mass of copper chloride contained in 50 cubic centimeters of solution is calculated by dimensional analysis:

[tex]m = \left(0.3\,\frac{g}{cm^{3}} \right)\cdot (50\,cm^{3})[/tex]

[tex]m = 15\,g[/tex]

There are 15 grams of copper chloride in 50 cubic centimeters of solution.

Answer:

57 mins

Explanation:

From the question given above, the following data were obtained:

Half life (t₁/₂) = 19 mins

Original amount (N₀) = 100 g

Amount remaining (N) = 12.5 g

Time (t) =?

Next, we shall determine the number of half-lives (n) that wound have elapse for 12.5 g of the sample to remain. This can be obtained as follow:

Original amount (N₀) = 100 g

Amount remaining (N) = 12.5 g

Number of half-lives (n) =?

N = 1/2ⁿ × N₀

12.5 = 1/2ⁿ × 100

Cross multiply

12.5 × 2ⁿ = 100

Divide both side by 12.5

2ⁿ = 100 /12.5

2ⁿ = 8

Express 8 index with 2 as the base

2ⁿ = 2³

n = 3

Finally, we shall determine the time taken for 100 g of the isotope to decay to 12.5 g. This can be obtained as follow:

Half life (t₁/₂) = 19 mins

Number of half-lives (n) = 3

Time (t) =?

t = n × t₁/₂

t = 3 × 19

t = 57 mins

Thus, it will take 57 mins 100 g of the isotope to decay to 12.5 g.

Answer:

It means there are 2 carbon atoms or 2 molecules of Co(I cant tell by spacing but the 1st one is more likely)

Explanation:

Answer:

The total number of moles of reactants consumed when 1.00 mole of CO₂ (g) is produced is 2 moles.

Explanation:

You have that the balanced reaction is:

C₃H₈ (g) + 5 O₂ (g) ⇒ 3 CO₂ (g) + 4 H₂O (l)

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of reactants and products participate in the reaction:

The rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.

If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) , the direct rule of three must be applied. To solve a direct rule of three, the following formula must be followed:

a ⇒ b

c ⇒ x

So [tex]x=\frac{c*b}{a}[/tex]

where a, b and c are known values. In this case the rule of three is applied as follows: if by stoichiometry of the reaction 3 moles of CO₂ consume 1 mole of C₃H₈, then 1 mole of CO₂ how many moles of C₃H₈ will it consume?

[tex]moles of C_{3} H_{8} =\frac{1 mole of CO_{2} *1 mole of C_{3} H_{8} }{ 3moles of CO_{2}}[/tex]

moles of C₃H₈= 0.33

Applying again a new rule of three: if by stoichiometry of the reaction 3 moles of CO₂ consume 5 moles of O₂, then 1 mole of CO₂ how many moles of O₂ will it consume?

[tex]moles of O_{2} =\frac{1 mole of CO_{2} *5 moles of O_{2} }{ 3moles of CO_{2}}[/tex]

moles of O₂=1.67

The total number of moles of reactants consumed will be the sum of the consumed moles of C₃H₈ and the consumed moles of O₂:

0.33 moles + 1.67 moles=2 moles

The total number of moles of reactants consumed when 1.00 mole of CO₂ (g) is produced is 2 moles.

Answer:

Explanation:

Rutherford gold experiment gave the explanation to some observations made on atoms.

When he shot the gold foil, most of the [tex]\alpha[/tex]-particles passes through the foil undeflected nor absorbed. This faction of the particles propagated the foil as if there was nothing placed on their path.

The surprising behavior of a few of the [tex]\alpha[/tex]-particles was that they were deflected from their initial path on hitting the gold foil.

This implies that there is a part of the gold foil which has the same charge as the [tex]\alpha[/tex]-particles, and more massive than the particles. Thus, he was able to determine the nucleus of an atom.

Answer:

Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged.

Explanation:

Answer:

Fnet = 20 Newton

Explanation:

Let the force applied by Brian be Fb.

Let the force applied by Alice be Fa.

Given the following data;

Force, Fb = 10N

Force, Fa = 30N

To find the net force, Fnet;

Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.

Mathematically, net force is given by the formula;

[tex] Fnet = Fapp + Fg[/tex]

Where;

Since the two force applied to the box are acting in opposite direction, we would subtract their values to find the net force.

Fnet = Fa - Fb

Fnet = 30 - 10

Fnet = 20 Newton

Answer:

A ball, just a plane ball that is what dalton thought the atom looked like.

Explanation:

Answer:

Gravity is viewed as a force because it is a force. A force F is something that makes objects of mass m accelerate according to F=ma. ... Einstein explained this gravitational force, F=GMm/r2, as a consequence of the curved spacetime around the massive objects.

Explanation:

Gravity is viewed as a force because it is a force. A force F is something that makes objects of mass m accelerate according to F=ma. ... Einstein explained this gravitational force, F=GMm/r2, as a consequence of the curved spacetime around the massive objects.

Answer: dissolution and dissociation of the ionic compound.

Explanation:

Ionic compound is formed by the transfer of electrons.

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.  

Here potassium metal forms [tex]K^+[/tex] cation and [tex]Cr_2O_7^{2-}[/tex] anion which exchange their oxidation states to form [tex]K_2Cr_2O_7[/tex].

When ionic compound is dissolved in water, it dissociates to its respective ions.The ions form bonds with oppositely charged ions of water molecules and thus get dissolved in water called as dissolution.

Answer:

The correct answer is D)high specific heat

Explanation:

The specific heat indicates the amount of heat required to raise the temperature of a substance in 1 unit of temperature. The specific heat of water is around 4.18 J/g.°C. That means that 1 gram of water is able to retain a high amount of heat (4.18 J) when the temperature is raised to 1°C. Compared with other substances, this specific heat capacity is higher. Thus, water is a good choice for use in a heat exchanger.

Answer:

the number of mol that 60 gram of calcium will have this 1.5 mol.

as number of mole is equal to

n=w/m which is

60/40 which is 1.5 mol

and that of the number of atoms it will have will be 60 over 40 times the algorithm constant 6.223 times 10 to the power 23 which will give 9.0 345 ×10²³

Answer: A. 20.0L

Explanation:

According to avogadro's law, equal moles of all gases occupy equal volumes at STP.

The given balanced equation is:

[tex]2C_2H_2(g)+5O_2(g)\rightarrow 2H_2O(g)+4CO_2(g)[/tex]

According to stoichiometry :

4 L of [tex]CO_2[/tex] is formed by = 2 L of [tex]C_2H_2[/tex]

Thus 40.0 L  of [tex]CO_2[/tex] is formed by = [tex]\frac{2 L}{4L}\times 40.0L=20.0L[/tex] of [tex]C_2H_2[/tex]

Thus 20.0 L of [tex]C_2H_2[/tex] is required to form 40.0L  of [tex]CO_2[/tex]

Answer:

Explanation:

can someone help me out here i can’t see the answer

Answer:

Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes

Explanation:

If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation.

Brain-List?

Answer:

Don’t change, keep the same

Explanation:

Answer:

Mass = 3.24 g

Explanation:

Given data:

Number of atoms of cobalt = 3.31 × 10²² atoms

Mass of cobalt = ?

Solution:

We will calculate the number of moles of cobalt first.

1 mole contain 6.022× 10²³ atoms

3.31 × 10²² atoms  × 1 mol / 6.022× 10²³ atoms

0.0549 mol

Mass of cobalt:

Mass = number of moles × molar mass

Mass = 0.0549 mol × 58.93 g/mol

Mass = 3.24 g

Answer:Explanation:Protons and other subatomic particles will be discussed a little later. The atoms of different elements are different from each other because they have different numbers of protons. The graphic below illustrates this point by showing the atoms of two elements in the containers of oxygen and hydrogen.

Answer:

c

Explanation:

solid to gas directly

0.692 mol CaCl₂

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Step 1: Define

4.17 × 10²³ atoms CaCl₂

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.692461 mol CaCl₂ ≈ 0.692 mol CaCl₂

Answer:

The new velocity would have to be 5.29 m/s.

Explanation:

2500 kg (bus) + 75 kg (driver) + 2500 kg (students) = 5075 kg

Substituting into the formula:  

P = 4.25 m/s  x  5075 kg

P= 21,568.75 kg m/s

As I mentioned, since there are two factors that determine momentum, we can still have the same momentum if we change the numbers around.  If we subtract eight of the twenty students, the mass would change by 1000 kg.

8 x 125 kg = 1000 kg

Subtract 1000 kg from the initial mass, 5075 kg, and you get 4075 kg.

To maintain the same number on momentum, we would have to increase the number for velocity.  We could find that value by doing the following:

21,568.75 kg m/s  =  (v) (4075 kg)

Divide both sides by 4075 kg, and we discover what the new velocity would have to be:

21,568 kg m/s /4075 kg  =  (v) (4075 kg) /4075 kg

5.29 m/s  =  (v)

Answer:

It starts at zero, and travels to the other side. Once it reaches the other fixed point, the wave travels back to the starting poing, this is represented as the lighter line. Notice the point right in the middle at p. This point is called a node.

Explanation:

Explanation:

Molar mass of Hg = 200.59g/mol.

Therefore Moles = Mass / Molar mass

= 100g / (200.59g/mol) = 0.499mol.

Answer:

nucleic acids yw

Explanation:

Answer:

nucleic acids

Explanation:

edg

Answer:

Natural selection is a process by which organisms best fit for the environment are most likely tp survive and reproduce.

Explanation:

According to Charles Darwin's principles of development by natural preference, organisms that maintain heritable characteristics that empower them to better acclimate to their environment associated with other segments of their varieties will be more likely to endure, reproduce, and transfer more of their genetics on to the next generation.

Answer:

0.049 mol/L.s

Explanation:

The decomposition of hydrogen peroxide is:

[tex]H_2O_2 \to H_2O + \dfrac{1}{2}O_2[/tex]

[tex]Rate = -\dfrac{\Delta [H_2O_2]}{\Delta t}= \dfrac{\Delta [H_2O_2]}{\Delta t}= \dfrac{ 2 \Delta [H_2O_2]}{\Delta t}[/tex]

The rate of decomposition reaction = the rate of formation of [tex]H_2O[/tex] = 0.098 mol/L.s

∴

Rate of formation of [tex]O_2[/tex] [tex]= \dfrac{ rate \ of \ reaction }{2}[/tex]

[tex]= \dfrac{ 0.098 }{2}[/tex]

= 0.049 mol/L.s