Can someone pls help me on this

Can Someone Pls Help Me On This

Answers

Answer 1

Answer:The bottom 3

Explanation:

Beacuse all of these have to do with this subject hope this helps.


Related Questions

what does group 16 (oxygen family) have in common

Answers

Answer: here is your answer

Explanation:

The oxygen family consists of the elements that make up group 16 on the periodic table: oxygen, sulfur, selenium, tellurium, and polonium. These elements all have six electrons in their outermost energy level, accounting for some common chemical properties among them.

Answer:

they all have 6 valence electrons

Explanation:

all elements in group 16 have 6 valence electrons

Over the past week, Anna has been very curt with shondra, and when she ask if she has done something to offend her, Anna tersely replies, "no, everything is fine" what should shondra do

Answers

Answer:

A. avoid talking to Anna altogether and stay out of her way

B. ask her manager for advice

C. check with Gary to see if there is any gossip about what's going on with Anna

D. take a curt approach of her own to show Anna how it feels

Explanation:

ANSWER: B.

what is the magnitude of earthquake took place in manila?
A.5.2
B.5.3
C.5.4
D.5.5​

Answers

Answer:

i believe its 5.2

Explanation:

The beakers in the picture above are labeled according to the ionic solutions they contain. What metal or metals could replace copper in the copper(II) nitrate solution?

Answers

Explanation:

When a metal replaces another metal in solution, we say such a reaction has undergone a single displacement reaction.

In such a reaction, metal higher up in the activity series replaces another one due to their position.

To known the metal or metals that will replace the given copper, we need to reference the activity series of metals.

Every metal higher than copper in the series will displace copper from the solution.

So, there metals are: potassium, sodium, lithium, barium, strontium etc.

I really am bad at chemistry

Answers

Answer:

A, 4,3,3,4

B, 3,2,2,3

C, 2,6,2,3

D, 1,2,1, 1

Question 3
True or False. You must convert grams to moles to do stoichiometry.
True
оо
D
False

Answers

Answer:

True

Explanation:

Sometimes you will need to convert from grams to moles, or moles to grams

You put two pots of water on the stove to boil. Both pots are the same size and are on the same size burner at the same heat setting, and one pot has twice as much
water as the other. Which one will boil faster? Why do you think that is?

Answers

Answer:

The emptiest one.

Explanation:

The more water, the more heat molucules have to turn to boil.

Have a great day!

Hope I helped and it would be greatly appreciated if you could be considerate and give brainliest.

What are the three main parts of an atom and what are their charges?
Where are the electrons found in an atom?

Answers

Answer:

Three main parts are Protons (pos charge) Neutrons (no charge) Electrons (negative charge) and the electron is found on the outside of the nucleus

Explanation:

025 Aqueous barium chloride and aqueous potassium carbonate react to produce solid
barium carbonate and aqueous potassium chloride.
A25
I need the balanced chemical equation for this

Answers

The balanced equation

BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + 2KCl(aq)

Further explanation

Given

word equation

Required

Balanced equation

Solution

Convert to chemical equation :

Reaction

BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + KCl(aq)

Give a coefficient

aBaCl₂(aq)+ K₂CO₃(aq)--> bBaCO₃(s) + cKCl(aq)

Make an equation

K, left = 2, right = c⇒c=2

C, left = 1, right = b⇒b=1

Ba, left = a, right = b⇒a=b⇒a=1

The equation becomes :

BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + 2KCl(aq)

What is the formula for displacement? *

1- Final position minus initial position
2- Relation to a reference point plus distance travelled
3- Distance divided by time
4- Speed times vector

Answers

Answer:

2 i think i am not very good at this lol

Explanation:

The units that acceleration use are distance/time^2  (in metric units).

The acceleration is the change of velocity over time, so

In another way, if the velocity is constant, the acceleration is zero, but if the velocity change over the time (as a car do when the red light change), the acceleration takes value!.

Can someone plz help? Thanks so much!
An atom that contains 6 protons 6 neutrons and 6 electrons has a mass of approximately
1) 12 u
2) 12 g
3) 18 u
4) 18 g

Answers

Answer:

12 grams

Explanation:

Electrons do not contribute to mass. The proper unit to use is G

0. Earth's rock is continually cycling through different states and locations. The diagram below shows the rock cycle. The labels for two processes are missing.
Weathering of
ROCKS at surface
IGNEOUS
ROCK
Uplin
SEDIMENTARY ROCK
METAMORIHIC ROCK
Melting
Which of these processes could be happening at the stage labeled 2?
o folding and mountain building
chemical changes due to heat and pressure
compaction and cementation of weathered sediments
subduction of an oceanic plate beneath a continental plate

Answers

Answer:

Chemical changes due to heat and pressure

Explanation:

Just took the test, hope this helps! :)

Answer:

Chemical changes due to heat and pressure

Explanation:

I took this test and got a 100%! :D

5. Determine if each statement is true or false about forming a hypothesis:
a. It must be long.
b. It is an educated guess.
c. It is in if…then format.
d. It must be testable.
e. It must start with I think.

Answers

a. false
b. true
c. true
d. true
e. false

Step 7: Determine the Limiting Reactant (Trial 2)
50
Analysis: The limiting reactant(s) appeared to be
because ...

Answers

Answer:

aluminum

no aluminum is left over

Explanation:

the next answers for step 7 are 0.019, 0.0093, aluminum

Answer:

Aluminum because no aluminum is left over

Explanation:

Can someone help me on this please

Answers

The answer is liquid

Answer:

the answer for 5 is liquid

Earths rocks change from one type to another over time die to various earth processes A- igneous rock B- cementation C- metamorphic rock D- rock cycle

Answers

Answer:

The rock cycle describes the processes through which the three main rock types (igneous metamorphic, and sedimentary) transform from one type into another.

How many moles in 13 grams of C 2 H6 ? show work

Answers

Answer:

0.43mole

Explanation:

Given parameters:

Mass of C₂H₆   = 13g

Unknown:

Number of moles  = ?

Solution:

To solve this problem we need to first find the molar mass of the given compound.

 Molar mass of C₂H₆ = 2(12) + 6(1)  = 30g/mol

So;

 Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

Number of moles  = [tex]\frac{13}{30}[/tex]    = 0.43mole

Calculate the percent composition of Fe in Fe(OH)3​

Answers

Answer:

52.257%

Explanation:

The diagram shows heat energy being transferred as hot water rises to the top of the pot and cool water sinks to the bottom.
water cools
cool
water
sinks
cool
water
hot
sinks
water
rises
What process is shown in the diagram?
A conduction
B. convection
O c Insulation
O D. radiation

Answers

I think it would be insulation

Which observation shows that a substance is malleable
(A) the substance breaks apart when stretched
(B) the substance shatters when hit with a hammer
(C) the substance flattens when hit with a hammer
(D) the substance can be stretched easily into wires

Answers

Answer:

B

Explanation:

Answer:

It is C: the substance flattens out when struck with a hammer

Explanation:

how many molecules are in 0.89 of silver

Answers

Answer:

5.36 × 10²³ molecules

Explanation:

Given data:

Number of moles of silver = 0.89 mol

Number of molecules = ?

Solution:

Avogadro number:

The number 6.022 × 10²³ is called Avogadro number.  

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

Number of molecules of silver:

1 mole contain 6.022 × 10²³ molecules

0.89 mol  ×  6.022 × 10²³ molecules /1 mol

5.36 × 10²³ molecules

does a fish's scales shred as the fish grows larger

Answers

Answer: No.

Explanation: Unless a disaster happens to their environment their scales will only grow.

What is the molar mass of Ba3(PO4)2?

Answers

Answer:

601.93 g/mol

explanation:

Problem: The Ba3(PO4)2 (molar mass = 601.93 g/mol) precipitate that formed from a salt mixture has a mass of 0.667 g.

The molar mass of barium phosphate is 601.93 g/mol.

What is molar mass?

Molar mass is defined as the mass of a compound divided by the number of moles which is the amount of substance .It is a bulk quantity and not a molecular property of a substance . They are mostly calculated by adding the atomic masses of constituent elements in a compound.

It is an average of many particles or molecules.Molar mass is an intensive property as it does  not depend on size of the sample.It has units of kg/mol. Molar masses of elements is given by relative atomic mass of element whereas that of compounds is given by the sum of relative atomic mass multiplied by the molar mass constant.

They are never measured directly , they are measured from the standard atomic masses.

Learn more about molar mass,here:

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What did Antoine Lavoisier’s experiments demonstrate?
A. Atoms always split into pairs during a chemical change.
B. Mass is neither lost nor gained during a chemical change.
C. Matter can be created during a chemical change.
D. Energy is neither lost nor gained during a chemical change.

Answers

Lavoisier disproved the phlogiston theory. He demonstrated that there was an element called oxygen that played a major role in combustion. He also showed that the mass of products in a reaction are equal to the mass of the reactants. In other words, no mass is lost in a chemical reaction.

_____ is the element from which iron is taken.

Carbon
Quartz
Hematite

Answers

Hematite is the element
Answer:

Hematite is the element from which iron is taken.

A balloon is filled with 10 liters of air at a pressure of 5 atm. What is the pressure of the balloon if the volume is changed to 20 liters

Answers

The answer is 10 atm. Plz give brainlyist

Between the green skinned lime and the yellow skinned lime, which of these are more acidic.

Answers

Green limes are more acidic as they tend to be smaller than yellow skinned limes. Yellow skinned limes tend to be sweeter whereas green skinned limes tend to be more sour. Green skinned limes are most likely immature compared to a yellow skinned lime which is mature

How is agriculture depended on industries​

Answers

Answer:

The interdependence of agriculture and industry helps the development of both the sectors. The most important aspect of this inter dependence is that the products of one serve as important inputs for the other. Growth of one sector, thus means ample supply of inputs for the other.

Explanation:

Write the following in standard notation: 2.8 x 10-5s.

Answers

Answer:

2.8 X 10-5s in standard notation is 28-5s

Explanation:

Multiply 2.8 by 10

When a fluorine atom becomes an ion, it will
A) gain an electron and increase in size
B) lose an electron and increase in size
C) gain an electron and decrease in size
D) lose an electron and decrease in size

Answers

Answer:

A) gain an electron and increase in size

Explanation:

Fluorine is a Group 17 element, making it a halogen. This means that it has 7 valence electrons in its outer shell. It only needs one more electron to fill its outer shell and gain stability. When fluorine becomes an ion, it gains an electron and becomes F⁻. Adding electrons creates a larger ion because the electrons occupy a larger volume due to mutual repulsions pushing them apart.

Hope that helps.

When a fluorine atom becomes an anion, it will gain an electron and increase in size. Therefore, option (A) is correct.

What is an ion?

An ion is a chemical specie that holds a positive or negative charge. The term ‘ion’ refers to atoms or molecules with non-zero net charges associated with them. Therefore, all ions have either a greater number of electrons than protons in their atomic structures or a greater number of protons than electrons.

If the number of protons is greater than electrons are termed to hold a net positive charge and are commonly referred to as cations. The ions that contain a greater number of electrons than protons hold a net negative charge and are known as anions.

The electronic configuration of the fluorine is 1s²2s²2p⁵. As the fluorine atom accepts one electron in its valence shell it becomes anion F⁻. The number of protons is less than electrons therefore effective nuclear charge decreases and the size of the ion increases.

Learn more about an ion, here:

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