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Answer: a solution where the solvent is water

Explanation: solute ions which are known as the dissolvable ions and molecules are surrounded by water molecules and then get incorporated into the bonding network of water

Answer:

11.9 g S

General Formulas and Concepts:

Chem

Explanation:

Step 1: Define

2.23 × 10²³ atoms S

Step 2: Define conversions

Avogadro's Number

Molar Mass of S - 32.07 g/mol

Step 3: Dimensional Analysis

[tex]2.23 \cdot 10^{23} \ atoms \ S(\frac{1 \ mol \ S}{6.022 \cdot 10^{23} \ atoms \ S} )(\frac{32.07 \ g \ S}{1 \ mol \ S} )[/tex] = 11.8758 g S

Step 4: Check

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

11.8758 g S ≈ 11.9 g S

Answer:

work

matter

potentioal

kinetic

physical

food

Explanation:it is in the order above ^

Answer:

The correct answer is 10.676 amu.

Explanation:

Based on the given information, the concentration of 10B left in the sample is 33.36%. Therefore, the percentage of 11B present will be,

11B = 100% - 33.36% = 66.64%

Now the atomic weight of the new boron element can be determined by adding the atomic masses of both the isotopes multiplied by its percentage.

Therefore,

= (10.013 amu * 33.36%) + (11.009 amu * 66.64%) / 100

= 10.676 amu

Answer:

C₃H₆ + H₂O = C₃H₈O

Explanation:

Hydration reactions (reactions involving converting an alkene to alcohol) have only one product, so there will be no byproduct along with propanol.

Propene reacts with steam to produce propan-2-ol. The reaction is C₃H₆ +H₂O[tex]\rightarrow[/tex]C₃H₈O. It is an example of hydration reaction.

Hydration reaction is defined as a chemical reaction wherein a substance combines with water. In organic chemistry, when an unsaturated substance reacts with water it is called as hydration reactions.

The reaction involves breaking of hydroxyl bond in water which is highly  exothermic releasing large amount of energy. Direct addition of water to an alkene is too slow and hence the rate is catalyzed by Lewis acids or Bronsted acids.

Hydration reactions are extensively used   for industrial production of butanol and isopropanol,etc.The addition of water along the double bond in alkenes takes place according to Markovnikov's rule.

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Answer:

16- physical

14- chemical

15- chemical

13- physical

Explanation:

A chemical change would be something like the burning of wood, it's an object changing into something new, or something changing. A physical change would just basically altering something like bending wood, it's still wood whether or not you bend it.

Answer:

calcium cation

Formula and structure: The chemical formula of calcium chloride is CaCl2, and its molar mass is 110.983 g/mol. It is an ionic compound consisting of the calcium cation (Ca2+) and two chlorine anions (Cl-).

Explanation:

Answer:

It's called Independent variable

Explanation:

....

Answer:

a: graphite.

Explanation:

According to the forces of attraction, graphite has  weak dispersion forces in between layers.

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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Answer:

About 7.89g/cm^3, I think.

Explanation:

Find the volume. Divide the mass by the volume.

Answer:

Radioactive

Explanation:

hope this helped! :)

Answer:

radiant

Explanation:

Radiant Energy

This should do it.

It is 2 KJ

It is because the formula is :

q=m∆Hf

where m is the mass and ∆Hf is the heat fusion.

So, we get:

q=80×25

q=2000J or 2 KJ

Answer:

24 electrons

Explanation:

In order to write the Chromium electron configuration we first need to know the number of electrons for the Cr atom (there are 24 electrons). Once we have the configuration for Cr, the ions are simple.

I hope this is correct!

Answer:

Volume of sphere A = 2 mL

Volume of sphere B = 8 mL

The volume of sphere B is 4 times the volume of sphere A.

Explanation:

We'll begin by calculating the volume of each sphere.

Data obtained from the question include:

Sphere A:

Mass = 24 g

Density = 12 g/mL

Volume =?

Sphere B:

Mass = 24 g

Density = 3 g/mL

Volume =?

Next, we shall determine the volume of each sphere. This can be obtained as follow:

For sphere A:

Density = mass /volume

12 = 24/volume

Cross multiply

12 × volume = 24

Divide both side by 12

Volume = 24/12

Volume = 2 mL

For sphere B:

Density = mass /volume

3 = 24/volume

Cross multiply

3 × volume = 24

Divide both side by 3

Volume = 24/3

Volume = 8 mL

Summary:

Volume of sphere A = 2 mL

Volume of sphere B = 8 mL

Comparing the volume of both sphere, we have:

Va /Vb = 2/8

Va /Vb = 1/4

Cross multiply

Va × 4 = Vb

Vb = 4Va

From the above illustration,

The volume of sphere B is 4 times the volume of sphere A.

It has been concluded that the volume of sphere A has been 4 times greater than the volume of sphere B.

Density can be defined as the mass per unit volume. Density can be expressed as:

Density = [tex]\rm \dfrac{Mass}{Volume}[/tex]

Sphere A has a mass of 24 grams, and a density of 12 g/ml.

Sphere B has a mass of 24 grams and a density of 3 g/ml.

Since the spheres have the same mass, the relationship can be given as:

Density of A × Volume of A = Density of B × Volume of B

12 × Volume of A = 3 × Volume of B

4 × Volume of A = Volume of B

Thus, it has been concluded that the volume of sphere A has been 4 times greater than the volume of sphere B.

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Answer:

What kind of properties result in the substance changing into a new substance?

A) Liquid Properties

B) Physical Properties

C) Chemical Properties

D) Real Properties

Edit: I don't like that question, so here another one instead...

Which of the following statement is incorrect for a chemical reaction?

A) Heat may be given out but never absorbed.

B) Sound may be produced.

C) A color change may take place.

D) A gas may be evolved

Explanation:

Answer:

Which of the following matches the correct definition to an example?

A. Chemical Change: My foot changes color

B. Physical Change: My microwave exploded

C. Chemical Change: My dog ate my homework

D. Physical Change: My homework burned in a fire

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Answer: The forensic examination of substances involve a preliminary flame test.

Explanation:

The forensic chemical analysis of samples involves the flame testing which is one of the preliminary test. The materials are burned on a flame and the color of the flame is considered indicative of the elements present in the material.

The substances like Borax (sodium borate), Copper(II) sulfate, and boric acid burn with a characteristic green flame.

Answer:

c

Explanation:

Answer:

Boron and Carbon

Explanation:

They both are in Group 14 in the Periodic Table of Elements.

There are three light bulbs shown in the diagram, additional component that are present in the circuit is one battery, two switches and two resistors

Circuit diagram is also known as electrical diagram or elementary diagram which is a graphical representation of electrical circuit.

In the given diagram, two resistance is present which are represented by the zig zag symbol. One battery is also present which is represent on the right right at the vertical part and two switches are present which are present on the top right side and one on the left side below bulb.

Hence, one battery, two switches, two resistors are present in the circuit.

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Answer: pseudoscience

Explanation:

Edge 2020

Answer: pseudoscience

Explanation: It is an opinion that is subjective.

A. Convert the 200 mol of water to kilograms of water.

Molality (m) shows the number of moles dissolved in every 1000 grams(1 kg) of solvent.

[tex]\tt m=n\times \dfrac{1000}{p}[/tex]

m = Molality

n = number of moles of solute

p = Solvent mass (gram)

or

[tex]\tt m=\dfrac{mol~solute}{kg~solvent}[/tex]

solute = 10 mol NaCl

solvent = 200 mol water⇒Convert to kilograms of water.

Answer:

I think the answer is c)

Explanation:

O - Oxide

N - Nitride

Cl - Chloride

Br - Bromide

Sulfide - S^2-

Iodide - I^-

Phosphide - P^3-

Flouride - F^-

When you have a non-metal, it ends in -ide when you place it into a chemical bond. These are all diatomic molecules (apart from phosphorus) and as such you take the element name, remove the suffix, and add -ide. When converting back, look at the electronegativity levels on your periodic table in the upper right corner of each element. (if you don't have them, google "nyc regents chemistry reference table" and go to page 6 of the first result.) The first charge in that spot is what the charge will be.

Answer:

B and C

Explanation:

The correct answer is Condensation and Deposition

Answer:

Explanation:

It is Deposition and Condensation

Answer:

Many scientists view biofuels as inherently carbon-neutral: they assume the carbon dioxide (CO2) plants absorb from the air as they grow completely offsets, or “neutralizes,” the CO2 emitted when fuels made from plants burn.

Explanation:

put in your own words, happy to help

To solve such this we must know the concept of combustion reaction. Therefore, the missing word is neutral that is Biofuels are therefore described as being carbon neutral.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

When biofuels are burned they release the same amount of carbon dioxide as was removed from the atmosphere by the plant. Biofuels are therefore described as being carbon neutral. the products of combustion reaction are carbon dioxide and water.

Therefore, the missing word is neutral.

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