Chemistry High School

Can someone help me with this question?

Answers

Answer 1

just need points lol

Related Questions

What natural process is best represented by
the diagram below?

Answers

Answer:

i actually dont know

Explanation:

Physical weathering :)

HELPPP!!!!!!!!!!!! ty

Answers

Answer:

increases

Explanation:

it turns out that an object increases as the square of it's speed.

Answer:

Explanation:

In all physical processes taking place in closed systems, the amount of change in kinetic energy is equal to the amount of change in potential energy. If the kinetic energy increases, the potential energy decreases, and vice-versa. this equation reveals that the kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four. so therfore stays the same as the object so it would speed up as well.

What properties do ionic compounds have?
A. low boiling point and conduct electricity when dissolved in water
B. high melting point and conducts electricity when dissolved in water
C. high boiling point and conducts electricity as a solid

Answers

High melting point and conducts electricity when dissolved in water :)

Answer:

High melting point

Explanation: toook the quiz

what are the 3 phases of matter?

Answers

Answer:

The three major phases of matter are Solid, Liquid, and Gas. But there is also Plasma

HELP ITS TIMED!!!!!!!!!!!!!!!!
1-Butyne and 2-butyne are position isomers.
Select one:
a. True
b. False

Answers

Answer:

False

Explanation:

How can you tell if a sample contains baking soda and cornstarch or baking powder?

Answers

Answer:

To find out if a sample has baking soda we can add vinegar.

Explanation:

When vinegar (acetic acid) is mixed with salt (sodium bicarbonate), water, carbon dioxide and sodium acetate are formed. We see the formation of bubbles (which is carbon dioxide, which is a gas).

What is the potential energy of your 3kg puppy that is sitting in the grass in your backyard

Answers

Answer:

Explanation:

The potential energy of the sitting puppy is 0J.

Since we have been given the mass of the puppy to be 3kg, to find the potential energy, we use the expression below:

Potential energy = mgh

m is the mass

g is the acceleration due to gravity

h is the height

So the puppy is sitting on the grass, the height is 0m

Therefore, Potential energy is 0J

In an aqueous solution of potassium chloride, the solute is *
1. KCI
2. O H20
3. K
4. CI

Answers

Answer:

1.KCl is answer

Explanation:

when potassium chloride KCl is dissolved in water,it will dissociate to form k+ and cl- .thus,the solute must be k+Cl- .

I hope it's helpful!

The substance dissolved in a solvent or water is called a solute it makes up the homogenous mixture called solution by getting dissolved in it.

The [tex]\rm KCl[/tex] is the solute in the aqueous solution of [tex]\rm KCl[/tex].

The solute can be explained as:

The substance that dissolves in an aqueous solvent or any other solvent to form a solution is called a solute.

[tex]\rm KCl[/tex] is a solute that dissolves in the water to yield [tex]\rm K^{+}[/tex] and [tex]\rm Cl^{-}[/tex] ions to produce the solution of potassium chloride.

Therefore, option A, [tex]\rm KCl[/tex] is the solute.

Learn more about solute and solvent here:

https://brainly.com/question/14521586

Which statement(s) is/are TRUE about covalent bonds?

Covalent bonds can form between atoms of
different elements.
Covalent bonds can form between a metal atom
and a nonmetal atom.

Covalent bonds can form between two metal
atoms.
Covalent bonds can form between two nonmetal
atoms.

Covalent bonds can form between atoms of the
same element.

Answers

Answer:

1. Covalent bonds can form between two nonmetal atoms.

2. Covalent bonds can form between atoms of the same element.

3. Covalent bonds can form between atoms of different elements.

Explanation:

I hope this helps u! :D

Explanation:

The molecular mass of a substance is defined as the mass of how many molecules of the substance

Answers

Answer:

Explanation: The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance

How many grams of water can be produce from the complete reaction of excess nitric acid and 33.2 mL of 0.245 M lithium hydroxide solution, assuming that lithium hydroxide is the limiting reactant?

Answers

Mass of water produced : 0.146 g

Further explanation

Given

33.2 mL of 0.245 M lithium hydroxide

Required

mass of water

Solution

Reaction

HNO₃ (aq) + LiOH (aq) → H₂O (l) + LiNO₃ (aq)

mol LiOH :

= M x V

= 0.245 x 33.2 ml

= 8.134 mmol

From the equation, the mol ratio of HNO₃ : H₂O = 1 : 1, so mol H₂O = 8.134 mmol

mass H₂O :

= mol x MW

= 8.134 x 10⁻³ mol x 18 g/mol

= 0.146 g

Can someone please help me !!
- It would mean a lot ❤️

Answers

_______________________________

Kendall

If something is heretic, it refers to certain characteristics that is coded in our DNA. In science we know that this is possible through understanding the workings of the chromosomes & their functions.

_______________________________

B. Carla is correct.

Why? - is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents. Heredity is the passage of genetic information from one generation to another. For offspring to inherit traitsthere must be a reliable mechanism for transferring genetic information from one generation to the next.

8. Name at least three properties of stars revealed by spectral characteristics:)

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A stellar spectrum can reveal many properties of stars, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.

which group served as the control in this investigation

Answers

Answer:

What is the investigation?

Explanation:

What three steps are involved in forming igneous rocks? WILL GIVE BRAINLEST AND POINTS

Melting, cooling, and hardening
Freezing, heating, and hardening
Melting, condensing, and softening
Freezing, evaporating, and softening

Answers

Answer:

I am pretty sure it is the first one: Melting, cooling and hardening

Explanation:

igneous rocks are made of molten lava and then they cool down and harden form into a rock. PLEASE correct me if i am wrong.

.
A hot plate, a large beaker of water, and grains of rice are used in a class demonstration. When the water begins to boil, the rice moves in a circular pattern. The model demonstrates

Answers

Answer:

Conduction

Explanation:

7 Coal was produced in the earth over millions of years. Which of the following is NOT a step in
the production of coal?
А Animals died and were covered by sediment.
B Plants died and were covered by sediment.
C Heat, pressure, and time change the peat to lignite.
Time and pressure changes dead plant material to peat.
D

Answers

Answer:

D. Time and pressure changes dead plant material to peat.

Explanation:

There are four steps in the production of coal: peat, lignite, bituminous and anthracite.

Peat: in this stage dead plants are oxidized to water and carbon dioxide and buried under sediments. The partial decomposition of plant matter due to the absence of oxygen is called peat. There is no factor of time and pressure that changes dead plant material to peat.

Lignite: Peat is subjected to heat, pressure, and time to form lignite.

Bituminous: More pressure in lignite removes all the traces of plant matter and form “soft coal”, bituminous coal.

Anthracite: It is the last stage, in which hard coal forms with the combined pressure and high temperature.

Hence, the correct answer is "D. Time and pressure changes dead plant material to peat."

Which of the following group of salts can be prepared by direct combination
a sulphate
b nitrate
c chloride
d phosphate

Answers

I think answer should be d. Please let me know if it’s correct or not okay thanks bye I appreciate it

A series stack of alkaline cells produces 4,524 kW of power of each coll contributes 14,5 w, how many cells are in the stock? (Round to the nearest whole
number)
ОА З
B. 66
OC. 312
OD 3,205

PLEASE HELP!!!!!!!!!

Answers

Answer:

C. 312

Explanation:

Answer:

C-312

EDGE 2021

Explanation:

The atomic mass of an atom is the sum of:

A protons and electrons
B protons and neutrons
C electrons and neutrons

Answers

Answer:

i think b(proton and neutrons)

The atmosphere consists of (a) Gases only (b) Water vapour only (c) Chemicals (d) Gases and water vapours science

Answers

Answer:

(d) Gases and water vapour

Explanation:

The atmosphere is a part of the Earth that contains predominantly gases or gaseous substances. In other words, the atmosphere is a combination of different gases, including water vapour.

Atmosphere is said to contain the following gases in the following proportion:

- Nitrogen (78%)

- Oxygen (21%)

- Argon (0.9%)

- Carbon dioxide (0.04%)

- Water vapour (1-4%)

Therefore, the Earth's atmosphere consists of many gases and water vapour.

Salt water, like koolaid, or coffee with
sugar are all
mixtures

Answers

Answer:

yes

Explanation:

An Atom that was neutral has now gained 3 electrons. Do you think this Atom will become a cation or an anion?Why?(In at least 2 sentences.)
Claim

Evidence

Reasoning

Answers

Answer: It will become an anion. Anions are negatively charged molecules. So if the molecule is charged by electrons and electrons have a negative charge, it must form an anion.

Explanation:

Describe how muscles make movement

Answers

Answer:

Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.

Explanation:

Hope it helps

How many moles in 4.3 x 1024 atoms of sodium (Na)?

Answers

Answer:How many ions are in 2 moles of NaCl?

2 mol NaCl = 2 x 6.02 x 10 23 = 1.204 x 10 24 NaCl formula units 2 mol NaCl = 2 (2 x 6.02 x 10 23 )= 2 (1.204 x 10 24) = 2.408 x 10 24 atoms *2 moles of sodium chloride contains 2.408 x 10 24 ions (combination of Na + ions & Cl – ions). H

Explanation:

sorry i was running out of time

6. A student is writing a formula for Magnesium Nitrite. He knows nitrite is a polyatomic ion with a charge of -1.
Magnesium is an ion with a charge of +2. He concludes that he will need 2 nitrite ions to balance the charge
across the compound. Thus he writes the final formula as MgN,O2. Explain what he has done wrong.

Answers

Answer:

See explanation

Explanation:

First of all, the student has not represented the formula of the nitrite ion correctly. The formula of the nitrite ion is represented as NO2^- whereas the student wrote N,O2.

Then, the charge on magnesium ion has been correctly designated as +2 while the charge on the nitrite ion is correctly designated as -1. Now, the ions can exchange valencies (without signs and we now write them as subscripts) to yield Mg(NO2)2.

please help! I've asked the question twice now.

Can you help me with drawing the structure of 3 propyl hex-1-ene?

Answers

Answer:

I have the image drawn, it'll be attached.

Explanation:

3 propyl hex-1-ene

The structure 3 propyl hex-1-ene

How many moles of zinc chloride will be produced when 112 grams of zinc oxide is used?

Answers

Answer:

1.38 moles

Explanation:

My teacher gave us the answer on a quiz so here if y’all want a explanation I’ll give y’all one tho

Lori is saving money to buy a new bike. She needs $120 but has only saved 60%.
How much money has she saved so far to go towards the bike?

Answers

10% of 120 is 12
12 x 6 is 72
The answer is 72

Which combination is most likely to form a precipitate?
A. ammonium hydroxide
B. barium chloride
C. calcium hydroxide
D. calcium acetate
E. iron hydroxide

Answers

Answer:

A - Ammonium Hydroxide (NH3)

Explanation:

• Metals are just too weak

• Calciums' have a low success rate

• Barium is good, but Ammonium is just stronger.

(This is just an opinion, I could definitely be wrong so just do corrections in class. Sorry)

Answer:

Explanation:

I think lol

Other Questions

1) through: (0, 4) and (4, 3) I keep you grounded, my brothers and sisters are seriously annoying but we are very close. I can't imagine life without them. Elizabeth plans on buying a new car for $25,000. The model she is looking at depreciates at a rate of 8.5% per year. Elizabeth plans on keeping the car for t years, or as long as it is worth more than $15,000.Create the inequality that represents the amount of time Elizabeth will own the car, and then use it to answer the question below. _______ ( ___ ) ^ t > _______ 25,000____0.85______25,000 9,150 _____0.915_______9,150 8,500_____0.085_______8,50015,000_____0.25_______15,000 i need help on this question Which of the following would be a negative symptom of a schizophrenicpatient?A. The patient has no reaction when told his mother has died.B. The patient yells at the nursing staff when told his mother hasdied.C. The patient laughs hysterically when told his mother has died.D. The patient hits the walls again and again when told his motherhas died. A school has 575 pupils. 56% of the pupils are boys. how many are girls? what is the range of the function f(x)=7-3x when the domain is {-4, -2, 0, 2}? What type of triangle, if any can be formed with angle measurements of 32 degrees,126 degrees, and 32 degrees? Pls help grades close today each main idea in finding gold, finding Florida HELP ME Why is Thomas Jefferson considered the Father of American Architecture? Give specific examples please help! What is the first step in solving the quadratic equation x2 = 9/16- Take the square root of both sides of the equation.-Add 1 to both sides of the equation.-Square both sides of the equation.-Subtract 1 from both sides of the equation. Eugene wants to buy jeans at a store that is giving $10 off everything. The tag on theJeans is marked 50% off. The original price is $49.98.a. Find the total cost if the 50% discount is applied before the $10 discount.b. Find the total cost if the $10 discount is applied before the 50% discount PLEASE HELP!!! 30 POINTS!!! NEED ANSWERS. WILL MARK BRAINIEST. FLAGGING NON RELEVANT ANSWER Follow the directions to convert the analog sound wave into a digital signal. The lines on the grid intersect at various points (x,y). For each whole number value of X, find the intersection point that is closest to the wave. Draw a small circle on that point, and record its Y value. The circles for the X values 0 through 3 are already done for you. Draw circles for the X values four through18. Write down all 19 Y values obtained by sampling the wave Because most journalists, television reporters, and other media personnel are not usually trained in psychological research, one must I'll GIVE YOU THE BRAINLIEST!!!!!!!!!!!!!!!!!!!!Place these features in the order they would probably form:sea stack, sea cave, headland, cliff, and sea arch Write an equation for the line with a y-intercept of5 that is parallel to the line with equationy=-3/4x+ 2. State if the numberis an integer, rational, irrational, or not a real number,irrationalnot a real numberrationalinteger Suppose that the functions u and w are defined as follows :u(x)= x^2+6w(x)= \sqrt{x+9}Find the following:(u o w) (7) =(w o u) 7) = Match each subject pronoun with the situation in which you would most likely use it. Drag the items on the left to the correct location on the right.