Chemistry High School

I WILL DIE I HAVE A KNIFE IN MY HAND. ANSWER WITH EXPLANATION. If the sound is high pitched, then the wave's frequency would have a:


A.high frequency, short wavelength


B. high frequency, long wavelength


C. low frequency, long wavelength


D. low frequency, short wavelength

Answers

Answer 1

Answer:

A

Explanation:

High frequency, short wavelength

Related Questions

if a car travels 350 miles in 7 hours what was the speed

Answers

Answer:

50 mph

Explanation:

Answer:

5 miles per hour

Explanation:

TRUST ME

help meeeeeeeeeeeee its impossibleeeeee

Answers

Answer:

Nice! If only....

Explanation:

Answer:

omg lol what even is this

Is ceramic a good insulator

Answers

Ceramics can withstand high temperatures, are good thermal insulators, and do not expand greatly when heated. ... Ceramics vary in electrical properties from excellent insulators to superconductors. Thus, they are used in a wide range of applications.

What is the mass of a lead block that has a volume of 30 mL?
O 3.39 grams

O .377 mL

O 265 mL

O 339 grams

Answers

Answer:

d

Explanation:

i think it's d, but I'm not sure. my answer is a little different but maybe i used a different number for the density of lead (11.35g/cc)

Please Help!

Which change takes place at the freezing point of a substance?
Group of answer choices
A. A gas becomes a liquid
B. A solid becomes a gas
C. A liquid become a solid
D. A gas becomes a solid

please also give me an explanation since I do not understand this.

Answers

The correct answer is b

Answer:

❤C. A liquad becomes a solid❤

Explanation:

✌When you freeze water its a scientific fact that it becomes solid.✌

The oxidation # (charge) of an element called "lindenium "Ld is + 1 and the oxidation # (charge) of an element called "mendezine symbol "Mz, is -2. What is the chemical formula for the compound called lindenium mendezide?

Answers

Answer:

Ld₂Mz

General Formulas and Concepts:

Chemistry - Compounds

Valence shellsWriting chemical compoundsBalancing charges

Explanation:

Step 1: Define

"Lindenium" Ld w/ oxidation charge of +1

"Mendezine" Mz w/ oxidation charge of -2

Step 2: Write Compound

To balance out the charges to be neutral (0), we must counter balance the amount of Ld's with Mz's. We need 2 Ld's with 1 Mz to create a compound with a neutral charge:

2Ld¹⁺ + Mz²⁻

2(+1) + (-2) = (+2) + (-2) = 0 (neutral charge)

Therefore, our compound must be Ld₂Mz.

A scientist observes plant roots growing through the mountain side. This is evidence for which type of natural process?

Physical weathering
Chemical Weathering
Erosion
Deposition

Answers

Answer:

I think chemical Weathering

Answer:

Deposition is the answer

Explanation:

A can of cola contains approximately 240 calories. If you consume two cans of cola each day for one week, approximately how many calories did you consume from cola?
Select one:
a. 3,400 calories
b. 70 calories
c. 1,700 calories
d. 480 calories

Answers

Answer: 3,400 calories
Well if you do 240 x 2 you get 480 and if you multiply it you get 3360

You don’t specify whether we round that number or you don’t specify whether we calculate the calories consumed weekly or daily

why sodium and chlorine are active element​

Answers

It takes more energy to remove an electron from a sodium atom to form an Na+ ion than we get back when this electron is added to a chlorine atom to form a Cl- ion.

how do humans benefit from photosynthesis

Answers

Equally importantly, photosynthesis is the source of oxygen and also removes carbon dioxide from our atmosphere. Oxygen is required for cellular respiration, the process by which food is broken down into energy. Thus, human beings are also solely dependent on photosynthetic plants for their oxygen requirements.

Answer:

Explanation:

Without photosynthesis there would be no oxygen in the earth's atmosphere and we wouldn't be here!

A clear, pure liquid sample is brought into the lab and exposed to an electrical current. Different gases are
produced on each of the electrodes. The sample is -

a. an element
b. an alloy
c. a compound
d. a polymer

Answers

I think the answer is an element

The sample here is a compound. The correct option is c.

What is a compound?

A chemical compound is a substance made up of many identical molecules that contain atoms from more than one chemical element and are held together by chemical bonds.

A molecule made up of only one element's atoms is thus not a compound.

The anode undergoes oxidation, while the cathode undergoes reduction. The species being oxidized provides the electrons.

An electrode in an electrochemical cell is referred to as an anode or a cathode depending on the direction of electron flow.

The electrode reacts with the electrolyte at the anode, producing electrons.

These electrons build up at the anode. Meanwhile, another chemical reaction occurs at the cathode, allowing that electrode to accept electrons.

Thus, the correct option is c.

For more details regarding compound, visit:

https://brainly.com/question/13516179

#SPJ2

Reaction type
Li + N2
Li3N

Answers

Answer:

Combination or synthesis

Explanation:

The given reaction is:

            6Li +  N₂ → 2 Li₃N

This reaction is a synthesis or combination reaction. 6 moles of Li combines with nitrogen gas to produce 2 moles of  Li₃N.

In a synthesis reaction, two substances combines together to give singular product. The formation of compounds from the union of the constituent elements falls into this category of reaction.

A scientist thinks he found a new metal, so he published a paper about this metal. About 1 week after the scientist published the paper, you noticed a problem with the paper the scientist wrote. You noticed that this metal was not a new metal. In fact, this metal was discovered years ago. You determined this when you saw the atomic emission spectrum. As you read the article, you remembered that each atomic emission spectrum is unique to each element and the atomic emission spectrum matched one that was already discovered. Using the techniques from Chemistry, you ran a Flame Test with a piece of the metal (the metal is safe to use) that you had shipped to you. You found the metal turned the flame yellow. What metal did you have in your possession?

**ANSWER CHOICES**
*Barium
*Calcium
*Strontium
*Copper
*Sodium

Answers

Answer:

Sodium

because it burns with a yellow-orange flame.

Explanation:

It relates with Barium which burns with yellowish green flame

PLEASE HELP
Electrical devices have been designed to convert electrical energy to other useful
forms of energy. Choose the device which converts electrical energy to kinetic
energy.

Answers

Answer:

B. Fan

Explanation:

The device in the options which converts electrical energy to kinetic

energy is the Fan.

When the fan is plugged to a an electric power source, the electrical energy gets converted to kinetic energy as a result of the movement of the blades in which Kinetic energy is defined as the energy as a result of the motion of a particle or substance.

Your explanation should include a claim, evidence, and scientific reasoning based on the data provided and the process of photosynthesis.

Answers

Answer:

yuh 100% true dude

Explanation:

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

What did you include in your response? Check all that
apply.
O No, thermal energy is not being transferred by
radiation in this image.
O The eggs are in direct contact with the metal pan,
which is in direct contact with the gas flame.
O Thermal energy is being transferred by conduction.
O Radiation transfers thermal energy by
electromagnetic waves.
O Radiation does not transfer thermal energy by
direct contact.

Answers

If you included all of them, check all
I’m just gonna explain it okay so if you included it in you paragraph response just check it off there is no right or wrong

Which of the following scenarios would not prompt the cell to start dividing

Answers

Answer:

what r the options??????

Choose two different particles found in the air. Explain how they are different and how they are the same

Answers

Answer:

Dust and smoke.

Explanation:

Dust and smoke are two different particles present in the air. Dust and smoke are different from one another due to their origin. Smoke formed from burning of materials while dust refers to the soil particles lifted by the wind due to their light weight. Dust and smoke are similar to each other due to their small in size, infinite number means uncountable and light weight.

Air is a mixture of gases and consists of dust particles and water vapor. It consists of small to very large size of particles. Some of them include dust pollen, soot, and liquid droplets.

Dust and soot particles of the air are different as the soot is a fine black particle of carbon and tar. It is made by the incomplete combustion of air. While dust is fine dry particles of matter.

Hence they both differ.

Learn more about the two different particles found in the air.

brainly.in/question/35683807.

someone help me plz :))) brainliest

Answers

Answer:

Option 2

Explanation:

Part of an important cellular process involving a DNA strand is modeled below
12000
What is the purpose of this cellular process?
F Preserving genetic information for future generations
G Deleting the information in the sequence produced from the DNA template
# Transcribing information in the DNA sequence for use by the cell
J Producing more nucleotides for the DNA sequence

Answers

Answer: transcribing information to the dna sequence for use by the cell

Explanation:

Can someone help me please!(I will mark you brainliest)

Answers

Answer:

ok Look at it and tell me if you think its correct :}

Which elements are abundant in visible universe

Answers

Hydrogen is the most abundant element in the Universe; helium is second. However, after this, the rank of abundance does not continue to correspond to the atomic number; oxygen has abundance rank 3, but atomic number 8. All others are substantially less common.

HOPE THIS HELPED <3

what is the molar mass of nickel (ll) chloride(NiCl2)

Answers

Answer:

Explanation:

yt

Answer:

129.5994 g/mol

Explanation:

An object is moving across a surface, but it does not gain or lose speed. Which best describes the object’s force?

Answers

Answer:

Explanation:

the vector sum of all such forces which equals zero for an object at rest. CASE 1: Considering a basketball of weight 1kg, if it has been kept stationary on the ground, there are two forces acting on it. These are it's weight (gravity) and equal and opposite force from the ground (normal reaction).

Answer:

The net force is zero. :)

Explanation:

Mercury is an element that forms during _____

Answers

Answer:

forms of mercury

Explanation:

Answer:

Explanation:

Mercury is an element and a metal that is found in air, water, and soil.Mercury rarely occurs uncombined in nature, but can be found as droplets in cinnabar (mercury sulfide) ores. China and Kyrgyzstan are the main producers of mercury. The metal is obtained by heating cinnabar in a current of air and condensing the vapour.

hope this helps! Have a good day or night! :)

what is love made out of ?

Answers

Love is made of everything !!!!!!!

Use the periodic to fill in the numbers in the electron configurations shown below.

B: 1s2 2sA2pB

A =
2
B =
1
Na: 1s22sC2pD3sE

Answers

Answer:

B: 1s²2s²2p¹

Na: 1s²2s²2p⁶3s¹

Explanation:

A = 2

B = 1

C = 2

D = 6

E = 1

Hope that helps.

Answer:

B: 1s2 2sA2pB

A = 2

B = 1

Na: 1s22sC2pD3sE

C = 2

D = 6

E = 1

equivalent mass of AL2O3​

Answers

Answer:

[tex]Mass = 102g[/tex]

Explanation:

Given

Compound: [tex]Al_2O_3[/tex]

Required

Determine the equivalent mass

In the above compound, we have: 2 Al and 3 (O)

The atomic mass of Aluminium is:

[tex]Al = 27[/tex]

The atomic mass of Oxygen is:

[tex](O) = 16[/tex]

So, the equivalent mass is:

[tex]Mass = 2 * 27 + 3 * 16[/tex]

[tex]Mass = 54 + 48[/tex]

[tex]Mass = 102g[/tex]

Which of the following chemical formulas contains the most molecules?
A. 5CO
B. 3H2O
C. 2Fe2O3
D. 4C3H8

Answers

C. 2Fe2O3 would be the correct answer!

d. what happens when an iron nail is kept in copper sulphate solution?​

Answers

Answer:

it changes color from blue to light green.

Explanation:

due to copper iron nail functions

Answer:

give the other person brainlieset plz

Explanation:

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