Chemistry High School

Help please and thank you

Answers

Answer 1

Crest

hope that helps^^

Related Questions

1 point
2. Due to its intricate network, minerals with sheet of tetrahedron do not
easily separate. *
True
False

Answers

I’m pretty sure it’s true :))!!

When energy is released by the pack, what happens to the energy of the surroundings (outside the pack)?
a. The energy increases
b. The energy decreases
c. The energy stays the same

Answers

Answer:

Explanation:

i hope that's correct

The energy of the surroundings (outside the pack) will:

a. The energy increases, when energy is released.

Energy in the surroundings:

Energy is delivered to create bonds, which is the reason the enthalpy change for it is positive to break bonds. Energy is expected to break bonds. Particles are a lot more joyful when they are "wedded" and discharge energy since it is simpler and more steady to be seeing someone.

When energy is released, the energy in the surroundings will increase.

Thus, option a is correct.

Find more information about Energy here:

brainly.com/question/25959744

Is a large body of flowing water ;created by many smaller flowing together. Aquifer

Answers

Answer:

alll I really know is that it includes smaller pools of water

Select the correct answer.

A substance is followed by the symbol (l) in a chemical equation. What does the symbol represent?

A.
The substance has the least molecules in the equation.
B.
The substance is in the liquid state.
C.
The substance is produced last in the reaction.
D.
The substance is dissolved in a liquid solution.
E.
The substance is lost at the end of the reaction.

Answers

Answer: choice b

Explanation:

The answer should be b

What human actions contributed to the nutrient pollution of Lake Okeechobee?
PLZ HELP MEEEEEEEEEEEEEEEE I BEG YOU

Answers

Answer:

These trends were attributed to both the increased external loads and to a reduction in the lake sediment's ability to assimilate nutrients from the water column. The main sources of external nutrient inputs are animal waste and fertilizers applied to food and forage crops.

Mercury metal is poured into a graduated cylinder that hold exactly 22.5 mL. The mercury used to fill the cylinder weighs 306.0 g. From this information, calculate the density of mercury.

Answers

Answer: density = mass/volume

Explanation:

What is a function of the backbone in animals?
A. It protects against predators.
B. It regulates blood glucose.
C. It surround the spinal cord.
D. It limits movement.

Answers

Answer:

C - It surrounds the spinal cord.

Explanation:

Option A would be incorrect. Having a protective shell on an animal’s back would be one of the ways they would be protected against predators. And having a backbone wouldn’t really make a good shield against predators.

Option B is incorrect. The pancreas regulates blood glucose, not the backbone.

Option D would also be incorrect. It doesn’t limit movement unless it’s bent or positioned abnormally. Or unless it’s broken or malfunctioned.

The only option that is correct is option C. Hope it helps. ^^

How do you know when a redox equation is balanced?

Answers

Like to check? Just add up the charges on both sides and see if they equal each other:)

How many molecules are in 83.2 g of chlorine gas (Cl2)?

Group of answer choices
1.42 x 10^24 molecules
1.78 x 10^28 molecules
7.04 x 10^23 molecules
14.2 x 10^24 molecules

Answers

Answer:

Try everything or guess, that will always work

1.42 x 10^24 molecules

1.78 x 10^28 molecules

7.04 x 10^23 molecules

14.2 x 10^24 molecules

Explanation:

Help please I am so lost my teacher is no help

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Answer:

B - CALCIUM

Explanation:

Hopes it helps

Why has popular media had a negative impact on forensic science?

Answers

Answer:

Because it serves their agenda.

Choose whether each statement is a scientific hypothesis, theory, or law. The pressure a gas exerts on a container increases as the temperature increases because the particles in the warmer gas move faster and collide with the walls of the container with more force.

Answers

Answer:

1) theory

2) law

3) hypothesis

Explanation:

edge 2021

A scientific hypothesis is a proposition that can be determined by experiments. If the gas container is heated, then the pressure inside will increase as shown by the hypothesis.

What is a scientific theory?

A scientific theory is a statement that has been tested by a thorough experiment and by following the experimental procedure to evaluate the results. The increase in temperature increases pressure because particle moves rapidly shown in theory.

A scientific law is a statement that is proven true by repeated experiments. As the temperature of the gas increases the pressure also increases showing the law of the ideal gas equation.

Therefore, scientific theory, law, and hypothesis are different.

Learn more about scientific hypothesis here:

https://brainly.com/question/14074757

#SPJ2

Since I'm a tomboy, does that mean I'm gender non-conforming?

Answers

i guess so? ur basically just breaking gender roles/ stereotypes. do what makes u happy :p

Answer:

Hello

Explanation:

I am a girl,not a tomboy.

Will we talk about something?

Arrange the following atoms in order of decreasing atomic radius

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Answer:

............. ..

can you pleasehelp me on this

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Answer: Trade winds!

Explanation:

The answers is a it’s when it changes using the wind

Help PLs thnk you!!!!!!!!!!!!!!!!!!!!!!!!

Answers

The answer is A is the correct answer

Which of the following does NOT represent a consumer organism?
O Carnivore
Chemotroph
O Scavenger
O Herbivore

Answers

Answer:

number three

drop a like to help other people out

I NEED A WORK EQUATION AGAIN HELLPPP PPLS!!!

Answers

Answer:

calcium+ethanoic acid= carbon dioxide + water

Zinc + ethanoic acid= zinc ethanoate+water

Answer:

calcium + ethanoic acid → calcium ethanoate + water

zinc + ethanoic acid → zinc ethanoate + water

1. 2 NH3 → N2 + 3 H2
If 2.8248 moles of H2 are produced, how many moles of NH3 were reacted?
2. CaCO3 → CaO + CO2
If 288.53 grams of CaCO3 are reacted, how many moles of CaO will be produced?
3. 2 KClO3 → 2 KCl + 3 O2
If 92.25 grams of KCl are produced, how many grams of O2 will also be produced?
4. 2 As + 6 NaOH → 2 Na3AsO3 + 3 H2
If 3.0482 moles of NaOH are reacted with 212.2 grams of As, how many moles of H2 will be produced?
5. Sn + 2 CuCl → SnCl2 + 2 Cu
If 2.1492 moles of CuCl are reacted with 355.58 grams of Sn, how many moles of SnCl2 will be produced?

Answers

Answer:

BRO IM IN ONLY 7TH GRADE

Explanation:

10. Which of these elements is the most electronetative?
(10 Points)
Nitrogen
Calcium
Bromine
O Aluminum

Answers

it would be nitrogen

Out of the four Nitrogen is the most electronegative. Electronegative is basically determined by whichever atom is closest to F (the most electronegative)

Nitrogen is only a few electrons difference than Fluorine. Bromine is still quite electronegative but it has whole extra valence shells making it not as electronegative as nitrogen

Describe the relationship between heat and the vibration of atoms (kinetic energy)

Answers

Answer:

As heat increases, kinetic energy will also increase.

Explanation:

As we heat a substance, the temperature will rise. The higher the temperature, the faster the molecules are moving.

10. What two effects can the wrong pH have on an enzyme?

Answers

Answer:

A pH environment has a significant effect on an enzymes. It can affect the intramolecular forces and change the enzyme's shape -- potentially to the point where it is rendered ineffective. With these effects in mind, typical enzymes have a pH range in which they perform optimally.

Explanation:

I hope this helps you.

Please i need help with this question.
Please show workings where necessary and proof/ explain your point

Answers

Answer:

Explanation:

Please see the attached picture for the explanation.

Le Châtelier's principle:

When a stress is applied to a system at equilibrium, the system will respond by shifting in the direction that opposes/ minimizes the effect of the stress.

• This stress could be the addition or removal of a product or reactant, changes in the concentration of the products or reactants, or a change in temperature.

☆ Why can heat be written on the same side of the products when the reaction is exothermic?

• Exothermic means that heat is released, thus heat can be treated as a product.

• I like to remember it as Exothermic → Exit

Identify what type of reaction is this
2AgCl + H2 → 2Ag + 2HCI

Answers

Answer:

single displacement

Explanation:

Can somebody please draw a mechanism for this reaction (synthesis of varenicline)?

Answers

Answer:

that is kinda hard I need to serch it up hold on

find the moler mass of P2S3

Answers

Answer:

158.2 g/mol

Explanation:

Help only if you know the answer

Answers

Answer:

velocity

Explanation:

Venus is the second planet from the Sun. It takes about 225 days for it to complete one revolution. What would make Venus have a longer revolution?

if Venus rotated slower

if Venus were closer to the Sun

if Venus rotated faster

if Venus were farther away from the Sun

Answers

Answer:

if venus were farther away from the sun

Explanation:

it is because far the planet is long the orbit is which make revolution longer

balance the equation C2H5OH + 3O2 → CO2 + H2O

Answers

Answer:

C2H5OH + 3O2= 2C02+ 3H20

Thus we have

2 Carbons on the left and 2 on the right

6 Hydrogen on both sides

1 oxygen from Ethanol and 6 from O2 for the left side, 4 from CO2 for the right and 3 from H20

Explanation:

hopefully this is right lol

Please help me i really need help

Answers

Answer:

H2o i think

Explanation:

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