3. Which of the following does not affect the solubility of solid solutes?
a. Volume of solvent
b. Stirring
c. Temperature
d. Amount of solvent

Answers

Answer 1

Answer:

Temperature

Explanation:

i GUESS that's the ans lol sry I needed points


Related Questions

Which of the following elements are characterized by having full outermost s and p
orbitals?
F. Period 7
G.
Group 8A
H.
Inner transition elements
J.
Periods 4, 5, and 6

Answers

Answer:

Group 8A

Explanation:

Group 8A elements are characterized by having full outermost s and p orbitals. These elements are also known as the noble gases or inert gases. They occupy the last group on the periodic table.

They are known to have an outer shell configuration of ns² np⁶The configuration reveals that atoms of all the elements have completely filled orbitals in their outer shell sublevels. This accounts for the non-reactivity of elements in this group. Most of the elements in the group have high ionization energy and very low electron affinity values.

Some of the elements in this group are Neon, Argon, Krypton, Xenon, and Radon.

can u see water vapour by a microscope?

Answers

Answer:

It can be formed either through a process of evaporation or sublimation. Unlike clouds, fog, or mist which are simply suspended particles of liquid water in the air, water vapour itself cannot be seen because it is in gaseous form

Explanation:

hope it help

Answer:

No. Unlike clouds, fog, or mist which are simply suspended particles of liquid water in the air, water vapour itself cannot be seen because it is in gaseous form

what is meant by hydrogen bond​

Answers

Answer:

The attraction between two atoms that already participate in other chemical bonds is a hydrogen bond

Why MgO will form after Mg reacting with CuO? (mcq)
Mg forms positive ions and O forms negative ions
Mg is more reactive than Cu
CuO have loose bonding

Answers

Answer:

Mg is more reactive than Cu

Explanation:

In the reaction between Mg and CuO to form MgO, MgO will form because Mg is more reactive than Cu.

This kind of reaction is called a single replacement or single displacement reaction.

The replacement of a metallic ion in solution by a metal atom higher in the activity series than the metal in solution falls into this category of reactions. The element Mg is higher than Cu in the activity series. The higher an element is in the activity series, the more reactive they are. Since Mg is more reactive, it will displace the Cu from CuO.

Which of the following statements is correct about the shape of the H2O molecule? Select all that apply.

Water is a linear molecule with bond angles of 180o

Water is a bent molecule with bond angles of 104.5o

Water has two pairs of unbonded electrons which are spread out evenly between the hydrogen atoms

Water’s two pairs of unbonded electrons push the hydrogen atoms further away from their negative charge

Answers

Answer:

Water is a bent molecule with bond angles of 104.5o

Water has two pairs of unbonded electrons which are spread out evenly between the hydrogen atoms

Explanation:

Water is a substance with chemical formula, H2O i.e. two hydrogen atoms bonded to one hydrogen atom. The more electronegative oxygen atom draws electron from the less electronegative hydrogen atoms to make the molecule a POLAR ONE. The water molecule assumes a bent shape with bond angle 104.5°.

The oxygen atom has two lone pairs of electrons, which each hydrogen atom is attracted to. This strong attraction forms hydrogen bonds in the water molecule. Hence, the two pairs of unbonded electrons in the water molecule are spread out evenly between the hydrogen atoms.

what type of energy is a orange being crushed

Answers

Chemical energy? I’m not completely sure

Answer:

Orange juice

Explanation:

Choose the best statement of the octet rule from those listed below atoms lose 8 electrons to become valent atoms lose 8 electrons to become valent, atoms want 8 valence electrons atoms want 8 valence electrons atoms tend to react until they have 8 valence electrons atoms tend to react until they have 8 valence electrons, atoms tend to react in order to have the s2p4 configuration atoms tend to react in order to have the s2p4 configuration, atoms tend to react in order to gain 8 valence electrons atoms tend to react in order to gain 8 valence electrons

Answers

Answer:

atoms tend to react in order to gain 8 valence electrons

Explanation:

The octet rule describes the tendency of atoms of elements to react in order to have eight electrons in their valence shell. This is because having eight valence electrons confers stability to the atoms of these elements in the compounds they form.

The octet rule only does not apply to the transition elements or the inner transition elements as only the s and p electrons are involved. the electronic configuration in atoms having an octet is s²p⁶.

For example, sodium atom has one valence electron in its valence shell but a complete octet in the inner shell; it will react with chlorine atom which has seven valence electrons to form a stable compound, sodium chloride by donating its one valence electron in order to have an octet. Similarly, the chlorine atom will then have an octet by accepting the one electron from sodium atom.

Answer question number 3

Answers

Answer:

A

Explanation:

A mixture is formed when two or more substances are physically mixed together. A compound is formed when two or more substances are chemically combined through a chemical reaction.

What is the charge on an electron? -1 0 +1 +2​

Answers

Answer:

to be honest I don't know

Explanation:

my brain won't work with this

How much energy is required to melt a 500. gram block of iron? The heat of vaporization is 6090 J/g and the heat of fusion is 247 J/g.

3.05x10 6 J
2.47x10 2 J
1.23x10 5 J
6.09x10 3 J

Answers

Answer:

Heat required = 1.23×10⁵J

Explanation:

Given:

Mass (m) = 500 gram

Specific heat = 6,090 J/g

heat of fusion = 247 J/g.

Find:

Heat required

Computation:

Heat required = 247 J/g× 500 g

Heat required = 1.23×10⁵J

during a labaratory experiment a sample of aluminum is found to have a mass of 12.50 grams and a volume of 4.6 millititers what is the density of this samplw expressed to thw correct number of significant figures

Answers

Answer: download socratic for those type of answer it will give you GREAT ANSWERS !!

Explanation:

Joy mixed baking soda and vinegar for her volcano model. She saw lots of bubbling and fizzing. What can she infer happened

A chemical change
A change in state liquid to solid

Matter was created

A physical change

Answers

Answer:

a chemical change

Explanation:

bubbles formed

Answer:

Explanation:

✔︎A chemical change

✖︎wich is D

 would be ur answer

Explanation:

❐A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.

CAN I PLZ GET MARK AS THE BRAINLIEST? ")

to determine the dependent variable, what question should you ask yourself?​

Answers

what change did the iv cause

Driving automobiles and burning coal for electricity are examples of two human activities that negatively impact _______.

Answers

Answer:

I think its pollution?

True or false? The mass number of an atom equals the sum of the protons and
electrons.

Answers

Answer:

false, it is the number of protons and neutrons

Explanation:

The answer above is correct my dude

how many electrons does Neon-21 have?

Answers

Answer:

10 electrons

Explanation:

Neon 21 has 10 protons and 11 neutrons. We know that there are the same number of electrons as there are protons. so your answer is 10.

3.58 x 1023 molecules of propane C8H8 would occupy how much space at STP

Answers

Answer: At STP, a mole of gas takes up 22.4 Liters. The 22.4 Liters/mole quantity can be derived from the Ideal Gas Law, PV = nRT, plugging in STP conditions for P and T, and solving for V/n, which gets 22.4 Liters/mole.

Explanation:

Please help brainiest is award!

Answers

Answer:

C

Explanation:

CH₄ is the formula for methane

What does analyzing data involve?
A. Comparing trends or patterns that prove the hypothesis
B. Observing an experiment to collect data
C. Creating a hypothesis to answer a question
D. Forming a hypothesis to develop an experiment

Answers

Answer:

A. Comparing trends or patterns that prove the hypothesis

Explanation:

Analyzing data involves comparing trends or patterns that prove the hypothesis. Sometimes, the trend might invalidate the hypothesis.

Data analysis is a very important process in course of experimentation. It brings out the meaning of data and makes data useful. Analysis involves establishing patterns from a given set of data. The main aim of data analysis is to identify useful information. It usually entails cleansing and transforming data into a set that can be useful.

Given: (52.6 cm)(1.214 cm)
What is the product expressed to the correct number of significant figures?
1.
64 cm2
2.
63.9 cm2
3.
63.86 cm2
4.
63.8564 cm2

Answers

Answer:

2.

63.9 cm2

Explanation:

All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.

Leading zeros are not consider as a significant figures. e.g. 0.06 in this number only one significant figure present which is 6.

Zero between the non zero digits are consider significant like 108 consist of three significant figures.

The zeros at the right side e.g 240000 are also significant. There are six significant figures are present.

When we add or subtract the values the number of significant figures after decimal in result must be equal to the given measurement having less number of decimal places.  For example,

The difference between 7.69 and 4.0.

7.69 - 4.0 = 3.7

When we multiply or divide the values the number of significant figures must be equal to the less number of significant figures in given value.

For example in given q:

52.6 cm × 1.214 cm = 63.9 cm²

The number of grams of the solution if you were given 25.00 mL of the ethanol with a
density of 0.79 g/mL

Answers

Answer:

The answer is 19.75 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 25 × 0.79

We have the final answer as

19.75 g

Hope this helps you

6. A sheet of metal is 2 cm wide, 10 cm tall, and 15 cm long. It was 4 grams. What is the
density?

Answers

Answer:

0.013g/cm^3

Explanation:

density= mass÷volume

Answer:

0.01(3) g/cm3 (cm3 means centimeter cubed, (3) means the 3 goes on forever)

Explanation:

The volume of the sheet is 300 cm3, and dividing 4 grams by 300 cm3 gets you 0.01(3) g/cm3. Hope it helps!

which electrons are the valence of electrons of the atom?

Answers

Answer:

Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell.

When we mixed milk and vinegar in the lab demonstration, a/an __.
was created.

Answers

Answer:

Plastic

Explanation

Found on google

Write the chemical formula for each binary ionic compound
Number 8 please
A
B
C
D
E
F

Answers

Answer:

A. K2S

B. Li2Se

C. ZnO

D. RbBr

E. Cs2S

F. Sr3N2

Explanation:

give IUPAC name

CH
|
CH
|
CH3 - CH2 - C = CH-CH2 - CH3​

Answers

Answer:

The IUPAC name of the given compound is Pent-1-ene.

Explanation:

Longest chain has 5 carbons and the double bond is at C-1 carbon

Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the green slime. Homer decides to check this out by spraying half of the shower with coconut juice. He sprays the other half of the shower with water. After 3 days of "treatment" there is no change in the appearance of the green

Answers

Answer:

This strange green slime is a colonization of fungi caused by the humidity of the bathrooms, which to be eradicated requires a non-specific antimicrobial such as sodium hypochlorite that generates an osmotic imbalance producing a fungicidal effect.

Explanation:

The fungi that appear in the form of slime at the microscopic level have many forms of colonization, by adding coconut milk it was assumed that this would generate an environment not suitable for their metabolism and reproduction but this did not happen, therefore they continued their reproduction.

Answer:

Explain?

Explanation:

Each of the four liquids had the same volume, why don’t
they each have the same density?

Answers

Key concepts

Physics

Chemistry

Density

Liquids

Introduction

You probably know that when solid objects are placed in liquid, they can sink or float. But did you know that liquids can also sink or float? In fact, it is possible to stack different layers of liquids on top of one another. The key is that all the different layers must have different densities. You can stack them by picking several liquids with a range of densities or by varying the density of one liquid by adding chemicals such as sugar or salt to it. If you choose colored liquids or add food coloring to each layer, you can even create a whole rainbow of colors in one single glass! Want to see for yourself? In this science activity you will stack several liquids—one by one—and create a colorful density column!

Background

Whether an object sinks or floats depends on its density compared with the density of the liquid into which it is dropped. All types of matter—solids as well as liquids—are made up of many different atoms. Depending on the mass of these atoms, their size and the way they are arranged, different substances will have different densities. The density is characteristic for each individual compound and defined as the mass of a compound divided by its volume. In other words, the more matter there is in a certain amount of volume, the denser a substance is. One cubic centimeter of rock, for example, is much heavier than a cubic centimeter of wood. This is because there is much more matter in the same volume of rock compared with the wood.

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Liquids can also have different densities. Freshwater, for example, has a density of about one gram per cubic centimeter at room temperature. Any compound—liquid or solid—that has a higher density than water will sink whereas substances with a lower density than that will float. You can test that for yourself by gathering several liquids that you have in your kitchen such as vegetable oil, corn syrup, dishwashing soap, water, rubbing alcohol and more. Which one of these do you think will sink or float in water? Find out in this activity!

Materials

Glass or cup

Water

Food coloring

Scissors

Rubber band (wide)

Small piece of wax

Popsicle stick

At least two small, clear jars or transparent mini cups (two ounces) with lids

Permanent marker

Masking tape

Three tablespoons

Dark corn syrup

Vegetable oil

Penny

Paper towels

Rubbing alcohol, dishwashing soap and other liquids (optional)

Sugar (optional)

Preparation

Gather all your materials at a workspace that can tolerate spills of all the liquids.

Fill a cup with tap water and add a couple of drops of food coloring to the water.

Ask an adult to help you cut and prepare small pieces (about 0.5 by 0.5 centimeter) of the rubber band, the popsicle stick and the wax.

Place the two empty jars in front of you (without the lids) and label them “1” and “2” with a piece of tape and the permanent marker.

Procedure

Take a clean tablespoon and pour two tablespoons of corn syrup in jar 1.

With the second tablespoon, carefully pour two tablespoons of colored water into jar 1 on top of the corn syrup. What happens to the water on top of the corn syrup? Does it mix or stay separate?

Use the third clean tablespoon to pour two tablespoons of vegetable oil in jar “1” on top of the colored water. Do you see mixing of the liquids? What happens to the oil? Does it float on top or sink to the bottom?

Now take empty jar 2 and add the same liquids—but in reverse order. Start by pouring in two tablespoons of vegetable oil.


The density of an object is 7.3 g/mL and the volume is 0.94
mL. What is the mass of the object?

Answers

Answer:

The answer is 6.86 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

volume = 0.94 mL

density = 7.3 g/mL

We have

mass = 7.3 × 0.94 = 6.862

We have the final answer as

6.86 g

Hope this helps you

Se ha añadido un evaporador para una alimentación de 11500 kg/dia de zumo de pomelo de forma que evapore 3000 kg/dia de agua por un lado y se obtenga una disolución concentrado de 50% por el otro ¿ con qué concentración porcentual inicial se deberá alimentar el zumo? (m1 = m2 + m3) (%m1 = %m2 + %m3)

Answers

Answer:

37 %.

Explanation:

¡Hola!

En este caso, para el problema descrito, conocemos la corriente de entrada y la de salida del agua, por lo que podemos obtener el flujo de la corriente que contiene el zumo a la salida una vez el agua fue evaporada:

[tex]F_{sol}=11500kg/dia-3000kg/dia=8500 kg/dia[/tex]

Luego, por medio de un balance de zumo de limón en el evaporador en el cual la cantidad que entra es igual a la que sale con sus respectivas concentraciones:

[tex]x_z^{entra}*11500kg/dia=x_z^{sale}*8500kg/dia[/tex]

Como la concentración del zumo a la salida es del 50 % (0.50), la de entrada es:

[tex]x_z^{entra}=\frac{x_z^{sale}*8500kg/dia}{11500kg/dia} =\frac{0.50*8500kg/dia}{11500 kg/dia}\\ \\x_z^{entra}=0.37[/tex]

Que es igual al 37%.

¡Saludos!

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