Which of the following is a hypothesis for an experiment measuring solubility of sodium sulfate?
A. O Sodium sulfate will dissolve better in cold water
B.
Sodium sulfate is toxic (poisonous; deadly) to humans.
c. Add sodium sulfate to water
D. O Sodium sulfate is a white powder

Answers

Answer 1
A would be a hypothesis

Related Questions

hEy PeEpS!! SEED HALP!!will give da crown to someone u-u

Answers

Answer:

D

Explanation:

This answer is correct; if you want you can use context clues, the middle two are not benefits, the first one is just absurd, so the only other logical answer id D. Also, its true.

The middle two are negative, and therefore cannot be benefits no matter how they are looked at.

For an explanation of the first answer and why it's wrong, read the comments.

What is the opposite force to pushing off the ground to jump?

Answers

Answer:

Newton's Third Law of Motion states that to every action there is an equal and opposite reaction. When the earth pushes on you to send you into the air after jumping, you also push on the earth with the same force. But forces are different from accelerations. A force F is a push or pull on an object

Explanation:

Answer:

Friction

Explanation:

Friction causes an opposite force

Isopropyl alcohol is a liquid with a density of 0.785 g/cm^3. How much volume would be taken up be 50.0 grams of isopropyl alcohol

Answers

Answer:

63.94 cm³

Explanation:

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

[tex]volume = \frac{mass}{density} \\ [/tex]

From the question we have

[tex]volume = \frac{50}{0.785} \\ = 63.694267...[/tex]

We have the final answer as

63.94 cm³

Hope this helps you

please help this is worth half of my grade! what letter represents the trough of the wave a,b,c,d,e

Answers

Hello good afternoon...God bless the answer to your following question is D

because...A crest point on a wave is the maximum value of upward displacement within a cycle. A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point in a cycle.

After pollen lands on the stigma of a flower, which of the following happens first?






Help I will give brainlist

Answers

The correct answer is:

Pollination

In which of the following is the number of neutrons correctly represented

Answers

Answer:

there needs to be a picture to answer

The diagram above shows the distribution of speeds for a sample of N2(g)
at 25°C
. Which of the following graphs shows the distribution of speeds for a sample of O2(g)
at 25°C
(dashed line) ?

Answers

Answer:

A

Explanation:

The Maxwell-Boltzmann equation, is the basis for discussion of the kinetic theory of gases. From it we can understand how gases are distributed at a particular temperature.

Let us remember that the kinetic energy of all gases is the same at the same temperature. However, the distribution of gases depends on their molecular weight at that particular temperature.

Heavier molecules are known to move slowly compared to lighter molecules. Heavier molecules generally have a smaller distribution while lighter molecules spread out.

For this reason, oxygen which is heavier than nitrogen has a smaller distribution as shown in the diagram (molar mass of oxygen = 32g/mol) while nitrogen (molar mass 28 g/mol) has a distribution that is more spread out being a lighter molecule. Hence the option chosen.

What do radio waves and microwaves have in common?


Both are at the side of the spectrum that has the lowest frequency.


Both are found next to visible light on the electromagnetic spectrum.


Both are at the side of the spectrum that has the highest radiant energy.


Both are at the side of the spectrum that has the shortest wavelengths.

Answers

Answer:

Both are at the side of the spectrum that has the lowest frequency.

Explanation:

i took the test

Answer:

a

Explanation:

Positive ions have ______ (More or Less) protons than electrons.

Answers

Answer:

More i think im remembering correctly

Explanation:

need help asap!!!!
will mark brainliest!!!

Answers

We can verify the properties as follows;

1) Sour taste - Put some soda on your tongue

2) Corrode metals - Put a little soda on a clean metal surface

3) Effect on Litmus paper - Dip a blue litmus paper in soda

4) Electrolysis - Add two electrodes to soda and connect a battery.

Does Soda show acidic properties?

Soda, specifically carbonated beverages like cola or soda pop, typically exhibits acidic properties. The acidity of soda is primarily due to the presence of carbonic acid (H₂CO₃), which forms when carbon dioxide gas (CO₂) dissolves in water.

When carbon dioxide is dissolved in water under high pressure, it forms carbonic acid through the following reaction:

CO₂ + H₂O ⇌ H₂CO₃

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Look at the chemical equation below.
2N2 + O2 2N2O
How many Nitrogen molecules are present? ___________
How many Oxygen molecules are present? ___________
How many N2O molecules are present? ___________

Answers

8 Nitrogen, 4 oxygen, 2 N2O

The molecules of Nitrogen, oxygen, and N₂O are  2, 1, and 2 respectively.

What is the chemical equation?

A chemical equation can be defined as the expression of a chemical reaction in terms of the chemical symbols of the substances. A chemical equation has reactants, formed products, and an arrow indicating the direction of the reaction.

The equation in which the number of atoms of each element is equal on either side of the chemical equation of a reaction is called a balanced chemical equation.

According to the law of mass conservation, the total mass of the elements on the reactant side should be equal to the total mass of elements on the product side.

Given, the chemical equation of the reaction of nitrogen ad oxygen gas can be written as:

2N₂  +  O₂ → 2N₂O

The number of molecules of Nitrogen gas is 2 and the molecules of oxygen gas are one and the molecules of N₂O are equal to 2.

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Help! I am in a hurry! Will get brainliest if correct!

Answers

The answer is Chlorine

Neutral atoms have the same number of____
What’s the missing word?

Answers

Answer:

electrons and protons

Explanation:

why do the Noble gases have the highest ionization energies across a period?

Answers

Answer:

ionization energy decreases from top to bottom in groups, and increases from left to right across a period. So technically, the noble games have the largest ionization energy.

Explanation:

what are the components of salt solution?

Answers

Answer:

*sodium chloride

*potassium chloride

*calcium chloride dihydrate

*magnesium chloride hexahydrate

*sodium acetate trihydrate

*sodium citrate dihydrate

*sodium hydroxide

Explanation:

Are the components of salt

In order to change a solid to a liquid or a liquid to a gas, what is needed?
A high boiling point
An increase in thermal energy
A high melting point
A decrease in thermal energy
Hide hint for Question 9

Answers

answer: increase in thermal heat

explanation: In order to change the state, more energy is needed.
When you want to go from a lower state (solid) to a higher state (liquid) then you need more energy. and more energy means more heat in this case. if it was going from liquid to solid, you would need less thermal energy.

A block of lead displaces 50.5ml of water. The block weighs 698 g. From this
information, calculate the density of lead.

Answers

Answer:

13.82 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{698}{50.5} \\ = 13.8217...[/tex]

We have the final answer as

13.82 g/mL

Hope this helps you

How many atoms are in 3CaCO3

Answers

Answer:

15

Explanation:

3 Calcium

3 Carbon

9 Oxygen

Which of the following are electromagnetic waves? *

Water waves

Sound waves

Radio waves

Seismic waves

Answers

electromagnetic waves are radio waves.

Which characteristic is common to all inner planets?

rings
moons
rocky surfaces
slow revolutions

Answers

|` ` All Inner Planets Have : ` `|

|` `  Rocky Surfaces! ` `|

|` ` Mark Brainliest for 10 Thanks <3 ` `|

Answer:

the answer is c

Explanation:

rocky surfaces

I need help ASAP ... please

Answers

Answer:

help with what?

Arrange the following elements in order from least to greatest electronegativity:
Ca, F, Ne, Fe?

Answers

Answer:

The electronegativity from order of least to highest is:

Ne, Ca, Fe, F

Explanation:

Elements in the periodic table have been arranged based on their level of electronegativity (which is the ability of an atom to attract electrons).

According to Paulings scale of rating elements based on their electronegativity, the electronegativity value of Fe, Ca, Ne, and F are 1.83, 1, 0 and 3.98 respectively.

Hence, based on Pauling scale, the order of electronegativity from least to highest is:

Ne > Ca > Fe > F

This is a science question. What is the skateboarder’s acceleration?

Answers

Answer:

2.4

Explanation:

Divide 7.0 by 3.0 you get 2.333333 then round it of to 2.34

What happens to the dry ice after sometime? ​

Answers

Answer:

As a rough rule, five pounds of dry ice will turn from a solid to a gas in 24 hours. It's best to pick up the block of ice just a few hours before your party so it's as frozen as possible when the bash starts.

Explanation:

Can someone tell me about kinetic, potential, and gravitational energy?

Answers

Answer:

the internet can teach you alot about all 3 things

Explanation:

Answer:

if you go on YT and search  kinetic, potential, and gravitational energy their will be a bill nye vid that is very informational on the topic at hand!!!

Explanation:

hope this helps!!

As a result of the Law of Conservation of Mass, during a chemical change the mass of the
products are equal to the mass of the:
A. particles
B. elements
C. reactants
D. compounds

Answers

Answer:

D. Reactants.

Explanation:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

....................D...........................

When a solid with a mass of 53.78 g is added to 50.0 ml of water in a graduated cylinder, the volume increases to 56.4 ml. Calculate the density of the solid.

Answers

Answer:

The answer is 8.40 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

volume = final volume of water - initial volume of water

volume = 56.4 - 50 = 6.4 mL

We have

[tex]density = \frac{53.78}{6.4} \\ = 8.403125[/tex]

We have the final answer as

8.40 g/mL

Hope this helps you

What type of bond (Ionic, Covalent or metallic) would be created when titanium bonds with chlorine?

(electronegativity values Ti = 1.54 Cl = 3.16)

Answers

Answer:

Covalent

Explanation:

Titanium on reaction with chlorine forms Titanium tetra chloride(TiCl4).

Titanium holds strong covalent bond with chlorine in TiCL4

I NEED HELP!!
In a stream, how are particles such as silt, clay, and sand carried?
A. as dissolve load
B. as bed load
C. in suspension
D. in solution

In a stream, how are particles such as silt, clay, and sand carried?
A. particles rubbing together
B. An increase is suspended materials
C. an increase in the dissolve load
D. changes in the stream 's carrying capacity

The path of a stream can vary considerably, depending on the slope of the land and the
A. bedload of the stream
B. amount of rainfall
C. amount of hummus present in the soil
D. Type of material through which the stream flows

The amount of dissolved material that stream water carries is usually expressed in
A. cubic meters per second
B. parts per million
C. cubic feet per minute
D. grams per 1000 gallons

The carrying capacity of a stream depends on both the velocity and the
A. Temperature of the water
B. amount of water in the stream
C. type of material through which the stream flows
D. minerals dissolved in the stream

Answers

Answer:

1 B

2A

#D

3B

1D

2B

3C

4A

A,C,A,B

C,A,C,A

C,A,A,B

Explanation:

Easy ive done this brings back memories

In  ecosystem, particles are carried as  bed load by rubbing particles together.Path of stream can be varied depending on amount of humus present in  soil and is measured in cubic meters per second and carrying capacity depends on  type of material through which stream flows.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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How many ATOMS of
Hydrogen are found in
Butane (C4H10)?

Answers

Answer:

does this help? 17.342%

Explanation:

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