A chemist measured a solution of 15.5 mL of a copper chloride
solution in water. This is an example of
data.

Answers

Answer 1

Answer:

solution

Explanation:


Related Questions

A physical change is easier / more difficult to reverse than a chemical change.

Answers

Answer:

the answer is that a physical change is easier to reverse then a chemical change.

Explanation: In order for a physical change to take place it's easier to just undo what happened then if it was a chemical change because in order for very few chemical changes to reverse to it's original substance you would need another chemical change.

A car travels 45 miles per hour. What is this speed in feet per hour?

Answers

Answer:

64

hopeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

It would be 45 distance for feet per hour

WILL MARK BRAINLIEST!!!! HELPPPP
what is the difference between simple distillation and fractional distillation

Answers

Answer:

A single distillation cycle is enough to separate the mixture. ... Simple distillation is the method used to separate substances in mixtures with significantly different boiling points, while fractional distillation is used for mixtures containing chemicals with boiling points close to each other.

Explanation:

Is this actually right

Answers

Answer:

what?????????i don't see a question

Answer:

Yes

Explanation:

A roller coaster with a mass of 20kg sits at the top of a 30 m high hill. What is the Potential energy of the roller coaster?
(Formula: PE=mgh)
(g= 9.8m/s)

Answers

Answer:

The answer is 5880 J

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

We have

PE = 20 × 30 × 9.8

We have the final answer as

5880 J

Hope this helps you

compound name of SO2

Answers

The compound name is SO2 is Sulfur dioxide. I hope this helps!!

Why is the nitrogen cycle considered a closed system?

Answers

Answer:

because nitrogen is fixed by bacteria and assimilated by plants

Explanation:

Answer:

It is a considered a closed system because nitrogen is fixed by bacteria and is taken in by plants.

Explanation:

An object with a mass of 1.2 g takes up a space of 2.4 mL. What is it's density?

Answers

Answer:

The answer is 0.5 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{1.2}{2.4} \\ [/tex]

We have the final answer as

0.5 g/mL.

Hope this helps you

The formula for density is almost always expressed as grams per milliliter in chemistry. To find the density of this object, simply divide the number of grams by the number of milliliters.

Therefore, we get:

1.2g / 2.4 mL = 0.5g/mL

This results in a density of 0.5g/mL!

8. Describe how crystals of copper sulphate are prepared.​

Answers

Answer:

Take a cupful of water in a beaker and add a few drops of dilute sulphuric acid. Heat the water. When it starts boiling, add copper sulphate powder slowly while stirring continuously. ... Crystals of copper sulphate will be seen at the bottom of the beaker.

Hope it helps

Describe the specific steps a scientist would take to solve a particular problem

Answers

Answer:

scientific method

Explanation:

- make an observation

- ask a question

- form a hypothesis

- make a prediction based on the hypothesis

- test the prediction

- iterate: use the results to make new hypotheses or predictions  

The transition metals (with the exception of Zn, Cd and Hg) are very much hard and have low volatility. Why Zn ,Cd and Hg has low melting points. (a) These have all their electrons paired. (b) These have maximum number of unpaired electrons. (c) These have very strong metallic bonding. (d) These have more metal-metal bonding.

Answers

Answer:

Zn ,Cd and Hg has low melting points because - These have all their electrons paired.

Explanation:

These have all their electrons paired -: All the electrons in the d-subshell are combined with Zn , Cd and Hg. The metallic bonds present in them are, therefore, weak. This is why they have low points of melting and bolting. therefore , this statement is true. These have maximum number of unpaired electrons. Since , these transition metals have all electrons paired , so this statement is incorrect.These have very strong metallic bonding -: Zn, Cd and Hg d-orbital are completely filled. They have poor metallic bonding and less compact packing due to their fully filled d-orbitals, so all of them are volatile in nature. Therefore, this statement is also not valid .These have more metal-metal bonding. -: Since , their metallic bond is weak , so this statement is not true .

Hence , the correct option is A (These have all their electrons paired).

A carpenter uses sandpaper on a piece of wood. Before, the wood felt rough. After, the wood felt smooth. Did the friction between the hand and the wood increase or decrease after using the sandpaper? Describe what the sandpaper did to the wood to make it smoother.

Answers

Answer:

Friction between the hand and the wood decreased.

Explanation:

The texture of the wood went from rough → smooth! This means friction between the hand and the wood was notably decreased.

According to this prompt, the carpenter used sandpaper against the wood. Sandpaper just so happens to be a very abrasive substance. The sandpaper polished and leveled out the wood which wore all the jutting bits away.- overall, making it much smoother and more pleasant to touch!

Hope I was of assistance! Have a nice day and Spread the Love! <3

Jack has a rock.the rock has a mass of 14g and a volume of 2cm^3.what is the density of the rock?

1
SEE ANSWER

ADD ANSWER

Answers

Answer:

7

g

c

m

3

Explanation:

What is the significance of an electronegativity difference of 1.7 between 2
atoms?
O A. It tells which atoms form positive ions and which atoms form
negative ions.
OB. It represents the boundary between what is considered to be an
ionic or a covalent bond.
C. It determines if the 2 atoms will react to form a molecule.
D. It identifies which metal atoms will join together to form metallic
bonds
Am

Answers

B. It represents the boundary between what is considered to be an  ionic or a covalent bond.

Further explanation

Electronegativity is the ability of atoms to attract electrons, especially in covalent bonds (sharing of electron pairs)

In a periodic system, electronegativity increases in a group, from bottom to top, and in a period from left to right.

From this difference in electronegativity, we can determine the ionic compound, polar or non-polar

Pauling determined the electronegativity scale (based on bond energies), between 0.7 - 4 (Fluorine has the highest number of electronegativities: 4)

Polar covalent compounds have a large electronegativity difference, while nonpolar compounds have a small electronegativity difference.

We can use the difference in electronegativity between the 2 bonded atoms to determine their polarity

<0.5: covalent non polar 0.5- 1.7: covalent polar > 1.7 : ion

Example

H₂O

H = 2.1

O = 3.5

H₂O = 3.5-2.1 = 1.4 >> polar

O₂

= 3.5-3.5 = 0 >> non polar

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.

Atoms with a different number of protons than electrons are called:

Answers

Answer:

Hello!!! Princess Sakura here ^^

Explanation:

They are called isotopes.

Answer:

A positive ion.

Explanation:

I think

Your aquarium looks blurred and you wanted to clean it.How will you use recantation technique to separate water from the pebbles and other designs

Answers

Answer:

why do you not ask to your maam the answer

i need help please!

asap

Answers

Answer:

Earth is pulling up on the book with a force of 4n i think

Explanation:

Please help ASAP 100 points points help I will mark you as brainlister

Answers

this is lithium ion with a +1 charge

Lithium ion with 1+ charge

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 are the benefits and dangers of the Iron element in our daily life?

Answers

Benefits; helps our red blood cells transport oxygen all around our body

Please can I have help on these two questions I’ll be very grateful!!!!!!

Answers

Answer:

-1 IS THE CHARGE OF ELECTRON AS THEY ARE NEGATIVE

MARK ME AS BRAINLIEST IF U FOUND IT HELPFUL

What is Aerosol,sol and gel​

Answers

Aerosol: When particles of solid or liquid get dispersed in a gaseous medium, the mixture is known as Aerosol. ... Sol: Sol is a colloidal system where the dispersed phase is solid, and the dispersion medium is liquid. • Gel: Gel is a colloidal system where the dispersed phase is solid, and the dispersion medium is liquid.

N2+H2》NH3


is it balanced or unbalanced ​

Answers

This is unbalanced. The balanced equation would be:
N2 + 3H2 -> 2NH3

What is the effect of tap water, sea water, and rainwater on the rusting rate of iron?
(Please i need an answer π-π) ​

Answers

Answer:

The more acidic the solution the faster it rusts. More Na = more rust

Explanation:

500 gram of flour added with 1L of water anong lalagyan o bottle magkakasya ang 500gram of flour ang 1L of water​

Answers

Answer:

it will become a bread

Explanation:

net Mass will become 1.5 liter

Which of the following wave types must have a medium to travel?
A. Ultraviolet light
B. Microwaves
C. Seismic (earthquake) waves
D. Radio waves
E. X rays

Answers

Answer:

it is B

Explanation:

Answer: B microwaves

HELP!!!
write the scientific names of these ionic compounds

Answers

Answer:

• Copper chloride

• Copper (II) chloride

• Iron (II) sulfide

• Iron (III) sulfide

True or false

Each family represents the number of energy levels present in an atom of the element.

Answers

Answer:

true because of the elements

What are natural resources

Answers

Answer:

resources that come from the ground or eath naturally which also means that those minerals like coal take hundreds of years to be created

Other Questions
Rank the following maps and geospatial technologies in terms of their privacy concerns, listing them fromgreatest privacy concern to least privacy concernA. geotagging, volunteered geographic information, mashup, citizen science, Mercator B. Mashup, geotagging, citizen science, volunteered geographic information, Mercator projection C. Mercator projection, Robinson projection, GPS, GIS, geotagging D. Robinson projection, geotagging, GPS, GIS, Goode Homolosine projectionE. GPS, GIS, volunteered geographic information, mental maps, geotagging HELPPP ASAPPPPP TIMED TEST ONLY 15 MINS LEFT HELPPPPWhich statement describes the solution to the problemin the passage from Travels with Charley?A. I took one companion on my journey - an oldFrench gentleman poodle known as Charley.B. Because it was a wind strange to me, and thereforemysterious, it set up mysterious responses in me.C. For myself, I try to keep the line open even for thingsI can't understand or explain, but it is difficult in thisfrightened time.D. Just as I felt unwanted in this land, so do I feel areluctance in writing about it. 15. Show, using a numerical example, that the expressions (x+2) and x + 4 are not equivalent. Pls help its due todayyy An airplane is flying overhead at a constant elevation of 4090 ft. A person is viewing the plane from a position 3010 ft from the base of a radio tower. The airplane is flying horizontally away from the person. If the plane is flying at the rate of 700 ft/s, at what rate is the distance between the person and the plane increasing when the plane passes over the radio tower Growth of the ___ movement led to the formation of the National Prohibition Party. The recipe makes enough stew for 6 people, and the ingredients cost $9.75. How much would it cost to serve 24 people? A student solved the problem using the proportion StartFraction 6 over 9.75 EndFraction = StartFraction c over 24 EndFraction Explain the error in this proportion. FOR THOSE WHO WANT A CHALLENGE owen has a collection of quarters nad nickels worth 8.10. if the nickels were quarters and the quarters were nickels, the value would be 17.70. find the number of each coin. Please help!! Will Mark brainliest!! A sleigh is being pulled horizontally by a train of horses at a constant speed of 6.38 m/s. The magnitude of the normal force exerted by the snow-covered ground on the sleigh is 7.50 103 N.(a) If the coefficient of kinetic friction between the sleigh and the ground is 0.26, what is the magnitude of the kinetic friction force experienced by the sleigh? N(b) If the only other horizontal force exerted on the sleigh is due to the horses pulling the sleigh, what must be the magnitude of this force? N Jack has a rock.the rock has a mass of 14g and a volume of 2cm^3.what is the density of the rock?1SEE ANSWERADD ANSWER If 12 roses cost 30.4 how much will 18 roses cost? You can't get published unless ______write.O youO you willyou wouldToOyou should Could you please put the answer with the letter? Does not need to be in order too. Need it now please help me Find the equation of a line that passes through the points (1,-3) and (3,-7).Leave your answer in the form y=mx + c what is 1/2 x2/5 =and 3/4 x 5/9 = Please hurry!! Read the excerpt from "Annabel Lee," by Edgar Allan Poe.And the stars never rise, but I feel the bright eyes Of the beautiful Annabel Lee;How does Poe use a sound device in the excerpt?a. He uses euphony to create the sounds of nature at night.b. He uses alliteration to link images of the night with images of his loss.c. He uses cacophony to proclaim the depth of his emotion.d. He uses internal rhyme to enhance the rhythm of his lyrical poem. 26 beats in 1/6 minute Help me please thank you