Chemistry High School

30 points pls i need help
i need the right answer

30 Points Pls I Need Help I Need The Right Answer

Answers

Answer 1

Answer:

C

Explanation:

yes,

Answer 2
The answer is C I think

Related Questions

What is the solvent in a salt solution like
brine?​

Answers

Answer:

in a salt solution, water is the solvent. during dissolving, particles of solvent collide with particles of solute. they sorround the particles of solute, gradually moving them away until the particles are evenly spread through the solvent.

Explanation:

HOPE IT HELPS PO(◍•ᴗ•◍)❤

What is the maximum number of electrons that an S orbital can have?
1 electron
2 electrons
4 electrons
3 electrons

Answers

S orbit can hold 2 electrons
S orbitals can have up to 2 electrons because they have one sub level and each sub level can hold up to 2 electrons

Calculate the density (g/ml) of mineral that has volume (total space occupied by something) of 3.8 ml and a mass of 22.4 g.

A- 5.9 g/ml
B- 85.1 g/ml
C- 0.17 g/ml
D- 26.2g/ml

Answers

Answer:

D

Explanation:

Name the most abundant compound found in air?

Answers

Answer:

The two most abundant compounds in air are the gases carbon dioxide, CO2, and water vapor, H2O

Answer:

Nitrogen

Explanation:

Nitrogen is the most abundant compound found in the air. It accounts for about 78% of the air that we breath. It is closely followed by oxygen that accounts for about 21% of the air.

FOR 40 points!!!! I need the whole page finish !!!!!! Pleaseeeeee!!!!!!! I will five u brainlist !!!!!!

Answers

Can you help meee with mine

Please help!! I'll name you brainliest!!

Answers

Answer:

H20 Covalent bond

Kl Ionic bond

NaBr ionic bond

Co2 Covalent bond

MgCl2 ionic bond

HCl Covalent bond

Explanation:

Which set of data is more precise?
O 1, 2, 1, 2
O 1,1.5, 1.5, 1
O 0.5, 1, 2,1.5
O 1, 2, 2, 1.5

Answers

Answer:

01,1.5,1.5,1

Explanation:

Imagine a group of hunters kills half of the rabbit population. How will it affect the other organisms?

Answers

Answer:

They will die off too

Explanation:

The animals that feed off the rabbits will start to die off from starvation, and so will the animals tho eat off of those. The entire food chain above the rabbits will start to decrease, while the plants and animals that the rabbits eat will increase in population due to less predators.

What was Rutherford's model of the atom missing?

Answers

Answer:

The Rutherford atomic model stated that an atom is mostly an empty space that consist of nucleus and electrons, where nucleus is positively charged and electrons are negatively charged.

But Rutherford atomic model missed to add the quantum mechanics or energy level for electrons. Rutherford was unable to make understand the planetary movement of electrons around nucleus and later Bohr's model explained it.

Hence,  Rutherford's model of the atom missed to explain the planetary movement of electrons around nucleus.

List the primary consumers in the food web please help

Answers

Answer:

Giraffe, rhinoceros, grasshopper, mouse, and deer

Explanation:

Primary consumers eat producers (plants). Therefore, all the animals that eat the plants are primary consumers.

Answer:

cricket, mouse, snake, bird

Explanation:

what is hybridization​

Answers

HYBRIDIZATION:

Hybridization is the idea that atomic orbitals fuse to form newly hybridized orbitals, which in turn, influences molecular geometry and bonding properties. Hybridization is also an expansion of the valence bond theory.

Answer:

Hybridization is the idea that atomic orbitals fuse to form newly hybridized orbitals, which in turn, influences molecular geometry and bonding properties. Hybridization is also an expansion of the valence bond theory

takes Mrs. Pare' three hours to drive 175 miles from her house in Pennsylvania to her house in Maryland. What is her average speed?

Answers

Answer:58.33mph

Explanation:

A wavelength with a frequency of 14 HZ has a wavelength of 3 meters at what speed will this wave travel

Answers

Answer:

The speed will be 42 m/s

Explanation:

Wavelength is the minimum distance between two points on the wave that are in the same state of vibration. In other words, in a periodic wave the wavelength is the physical distance between two points from which the wave repeats.

Frequency (f) is the measure of the number of cycles or repetitions of the wave per unit of time. That is, it is the number of vibrations that occur in a unit of time. That is, how many peaks or valleys are repeated in a unit of time. If the unit of time is one second then the frequency is measured in Hertz (Hz).

The wavelength (λ) and the frequency (f) are two inversely proportional parameters and related by the propagation speed. The speed of propagation is the speed with which the wave travels, it is represented by the letter "v". The equation that links these three parameters is v = f * λ.

In this case:

f= 14 Hzλ= 3 m

Replacing:

v= 14 Hz* 3 m

Solving:

v= 42 m/s

The speed will be 42 m/s

What is the chemical formula for Tetrasulfur pentoxide?

Answers

Answer:

S 4 O 5

Explanation:

the 4 and 5 are little

Is the following chemical equation balanced?
C₁₀H₂₂ + 31 O₂ ⟶ 20 CO₂ + 22 H₂O

Answers

Answer:

Yes- i balanced it-

Explanation:

need points & are good at science?

Answers

Answer:

A

Explanation:

I believe the Correct answer would be A

What mantle is forced down and begins to melt?


HELP!

Answers

Answer:

magma

Explanation:

Answer:

magma rises through it.

Explanation:

In metallic bonds, electrons are referred to as electrons.​

Answers

Answer:

Metallic bonding may be described as the sharing of free electrons among a lattice of positively charged metal ions. The structure of metallic bonds is very different from that of covalent and ionic bonds. ... In metallic bonds, the valence electrons from the s and p orbitals of the interacting metal atoms delocalize.

ANSWER ASAP THIS IS 6TH GRADE SCIENCE! GIVING BRAINLIEST FIVE STARS ANS A HEART!
Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission.

Answers

Answer:

what are you supposed to answer???

Explanation:

Charli is boiling a pot of water as she prepares dinner. The temperature at which the water boils can be explained by the external
pressure and
A
the amount of heat that is added to the pot of water.
B. the volume of the sample of water being heated.
C. the rate at which heat is added to the pot of water.
D
the strength of attractive forces among the water molecules.

PLEASE ANSWER QUICKLY THIS IS DUE IN 5 MINS!!

Answers

Answer:

ya tu sabes cómo se los aseguro

How is the glucose level in the blood maintained? Which body system, organs, and hormones are used and what do they do?

Answers

Answer:

Explanation:

Insulin is an hormone used to regulate blood glucose, as it helps to maintain a balance. It allows for transport of glucose to organs such as liver.

The process of glucose regulation is a complex process. When food is eating glucose is absorbed into the bloodstream this happen from the gut and it raises the blood glucose level this causes insulin(hormone) to be released from the pancreas so glucose can move inside the cells and be used.

As glucose moves inside the cells, the glucose level inside the bloodstream returns to normal and insulin release slows down.

Glucose which is the main energy source used by cells is allowed to be taken up by muscles, liver and fat (adipose tissue) and use as a source of energy so they can function properly.

0.6 sample an unknown organic acid found in muscle cells is burned in air and found to contain 0.24g of carbon, 0.04g of hydrogen with the rest being oxygen. If the molecular weight of the substance is 90g/mol what is the emperical and molecular formula

Answers

Answer:

Molecular formula is, C₃H₆O₃

Empirical formula (with the lowest subscript) → CH₂O

Explanation:

We assume that the organic acid's mass is 0.6 g. We know that, in 0.6 g of compound we have 0.24 g of C and 0.04 g of H, then, we have

(0.6 - 0.24 - 0.04) = 0.32 g of O.

We determine each mol:

0.24 g /12 g/mol = 0.02 mol of C

0.04 g/ 1g/mol = 0.04 mol of H

0.32 g/ 16 g/mol = 0.02 mol of O

1 mol of acid weighs 90 g/mol.

In 0.6 g of acid, we have, (0.6 g / 90g/mol) = 0.0067 moles

Let's find out the formula with rules of three:

0.00667 mol of acid have 0.02 moles of C

1 mol of acid may have (0.02 /0.00667) = 3 mol of C

0.00667 mol of acid have 0.04 moles of H

1 mol of acid may have (0.04 /0.00667) =  6 mol of H

0.00667 mol of acid have 0.02 moles of O

1 mol of acid may have (0.02 /0.00667) = 3 mol of O

Molecular formula is, C₃H₆O₃

We confirm by the molar mass: 12g/mol . 3 + 6 . 1g/mol + 32g/mol . 3 = 90

Empirical formula (with the lowest subscript) → CH₂O

165g= ______________ kg

Answers

Answer:

Hi

Explanation:

Hi

1. What is a food web?
A group of animals
a food chain with two levels
A producer and consumer relationship
how several food chains are related

Answers

Answer:

a producer and consumer relationship how several food chains and related.

Answer:

The answer is:

Explanation:

A food chain with two levels.

Hope this helps!!

❤️

:)

What is the mass of 1.9 x 10^22 molecules of CaCO3?

Answers

Answer:

3.2 g CaCO₃

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic TableAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

1.9 × 10²² molecules CaCO₃

Step 2: Identify Conversions

Avogadro's Number

[PT] Molar Mass of Ca - 40.08 g/mol

[PT] Molar Mass of C - 12.01 g/mol

[PT] Molar Mass of O - 16.00 g/mol

Molar Mass of CaCO₃ - 40.08 + 12.01 + 3(16.00) = 100.09 g/mol

Step 3: Convert

Set up:                              [tex]\displaystyle 1.9 \cdot 10^{22} \ molecules \ CaCO_3(\frac{1 \ mol \ CaCO_3}{6.022 \cdot 10^{23} \ molecules \ CaCO_3})(\frac{100.09 \ g \ CaCO_3}{1 \ mol \ CaCO_3})[/tex]Multiply/Divide:                                                                                                    [tex]\displaystyle 3.15794 \ g \ CaCO_3[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

3.15794 g CaCO₃ ≈ 3.2 g CaCO₃

What enzymes Break it down sugar ???

Answers

Amylase has the process in which it breaks down of sugars when you’re having carbohydrates

3. How many moles of KCl is produced according to the chemical reaction?
2KCIO3(s) -------> 2KCI(s) + 302(g) M

Answers

Answer:

the answer should be: 12.00 Mol KCIO³ × 3 Mol 0² divided by 2 mol KCIO³ = 18.00 mol 0²

The answer should be 12.00 Mol KCIO3x3 Mol 02 divided by 2 Mol KCIO3=18.00 02

can someone please help me with this question for chemistry. What is the number of moles in 1216 g Sr3(PO4)2? the 3,4, and 2 and small numbers that go under the letters btw

Answers

2.68 mol should be the answer

These organs are just containers for air?
Respiratory system

Answers

The answer is lungs. Hope this helps!

What is the phenotype of a plant with the genotype RR?
Red
White
O
Pink

Answers

Answer:

This question is incomplete, but it can be answered based on general knowledge of the topic. The answer is RED

Explanation:

This question is describing a gene that codes for color. The allele for red color is R while that of white is r, however, these two alleles exhibit incomplete dominance to form an intermediate phenotype that is PINK (Rr).

Since the heterozygous is pink color, it will take two red alleles to make a plant phenotypically red i.e RR. Note that, genotype "rr" will be white.

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