Please help this is chemistry.

Please Help This Is Chemistry.

Answers

Answer 1

Answer:

C

Explanation:

the rest are trends except for Electronegativity


Related Questions

What is the term that refers to the rate of change in an object’s velocity?
Group of answer choices

momentum

acceleration

force

speed

Answers

Answer: Acceleration

Explanation:

Acceleration.  The rate of change of an objects velocity is essentially the derivative of the velocity which is acceleration

acceleration just did this :)

Question 4
Which best describes a chemical reaction that follows the law of conservation of matter?
А
The reactants have the same mass as the products.
B
The reactants have the same density as the products.
С
The products conserve all physical properties of the reactants.
D
The products conserve all chemical properties of the reactants.

Answers

It is going to be D hope this helps

what are the similarities and differences between the crocodile , sheep , and gorilla digestive system?​

Answers

Answer: Crocodile is a reptile whereas sheep and gorilla are the mammals.

Explanation:

Crocodile, sheep, and gorilla have alimentary canal in their digestive system. The urea is the common excretory waste.

Mouth is typically large in case of crocodile and comparatively small in sheep and gorilla.

In crocodile more sharp teeth are present as compared to sheep and gorilla for mastication of food and capturing the prey like fish or large animals like zebra.

The crocodile palate is more stronger than sheep and gorilla because it enable it to chew the bones of the prey.

help me please!

Thermal energy can come from other forms of energy. Give several examples how.

i'm getting graded for this!!!

Answers

good luck kid, now mark me brainliest

What mass of ethanol will release 410.0 J of heat when it cools
from 32.2°C to 19.1°C?
The specific heat of ethanol is 2.44 J/gºC.

Answers

12.8 g

(Don’t have explanation but it is right on CK-12)

Which element below would you most likely expect to be a poor conductor of heat and electricity?

Answers

Answer:Nonmetals and rubber

Explanation: hope this helps

Answer:

phosphorus

Explanation:

non-metals are poor conductors

Biologists designed an experiment to test the effect of compost on the development of root crops. They tested several different crops, including carrots, potatoes, beets, and onions. They grew most of the plants in the greenhouse, but due to space issues, they had to grow some outdoors. They gave all the plants the same amount of compost. They obtained the compost from a local farmer and from the local hardware store. They ran out of the farmer’s compost, so some of the plants received that compost when the seeds were planted and other plants got hardware store compost after the plants had already started growing.

RESULTS: Some of the roots seemed really big. Other roots seemed normal or small.

CONCLUSION: They couldn’t tell what the effect of the compost was because the results were inconsistent.

What are five problems with this experimental design that could have caused inconsistent results?

Answers

Answer:

it is 56

Explanation:

Answer:

one of the problems are that sum of the plants weren't getting the same kind of compost the second issue is that they couldn't fit all the plants into the greenhouse third issue issue was that some plants got compost when planted but what about the others

I got this answer from one of the WRONG answers. This was in the comments. So thanks to them!

Which number is the same as 4.8 x104
a. 0.00048
b. 480000
C. 48000
d. 480

Answers

Answer:

I'm Pretty Sure It Would Be C

Answer:

C it is yeah...°∆°

Explanation:

......

1 mol of titanium,
Ti, is 47.88 g is that true?

Answers

Answer: True.

Explanation:

Molar mass is the mass of a given substance divided by the amount of that substance, measured in g/mol. For example, the atomic mass of titanium is 47.88 amu or 47.88 g/mol. In 47.88 grams of titanium, there is one mole, or 6.022 x 1023 titanium atoms.

The characteristic molar mass of an element is simply the atomic mass in g/mol. However, molar mass can also be calculated by multiplying the atomic mass in amu by the molar mass constant (1 g/mol). To calculate the molar mass of a compound with multiple atoms, sum all the atomic mass of the constituent atoms.

For example, the molar mass of NaCl can be calculated for finding the atomic mass of sodium (22.99 g/mol) and the atomic mass of chlorine (35.45 g/mol) and combining them. The molar mass of NaCl is 58.44 g/mol.

How does the circulatory system work at the tissue level?

Answers

Answer:

Answer. Answer: The circulatory system is a network consisting of blood, blood vessels, and the heart. This network supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste products.

Explanation:

Answer:

ME AND YOU HAVE THE SAMEEEE USER BUT LOOK

The circulatory system is a network consisting of blood, blood vessels, and the heart. This network supplies tissues in the body with oxygen and other nutrients, transports hormones, and removes unnecessary waste products.

Explanation:

Explain what it means to have a positive percent error value and a negative percent value.

Answers

Answer:

The error of an experiment is the difference between the experimental and accepted values. If the experimental value is less than the accepted value, the error is negative. If the experimental value is larger than the accepted value, the error is positive.

Explanation:

I hope that helped if it did mark me brainlest! i really need it :(

Elsa is making a grilled ham-and-cheese sandwich. She uses a 20-gram slice of cheese, 40 grams of sliced ham, and two 15-gram slices of bread. After she heats the sandwich on a griddle, the cheese is melted. What will be the mass of her sandwich?

Answers

90 grams. When the state of an object changes, the mass doesn’t change.

*edited*

How many moles are there in 3.612 x 1024 formula units of Na2SO4?

Answers

Answer:

Theanswer is 6 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\ [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{3.612 \times {10}^{24} }{6.02 \times {10}^{23} } \\ [/tex]

We have the final answer as

6 moles

Hope this helps you

A student is attempting to identify an unknown liquid. She places 10 mL of the liquid in a test tube and begins heating it over a burner. She checks and records the temp every minute until it begins to boil. What is the independent variable?

Answers

Answer:

The time of heating

Explanation:

Let us analyse the experiment closely; the temperature of the liquid increases as the time of heating increases. This implies that the temperature of the liquid is dependent on the time of heating of the liquid. The longer the time of heating, the greater the increase in temperature until the boiling temperature is eventually attained.

Hence, the temperature of the liquid is the dependent variable, the time of heating is the independent variable when the heating rate is held constant.

If 100 yards = 1 football field, what is the length, in meters, of 4.9
football fields?

Answers

* Answer: 448.056 meters *
——
1 yard = .9144 meters (according to Google)
100 yards= 91.44 meters
——
100*4.9= 490 yards
490 yards = 448.056 meters

* 4.9 Football fields= 448.056 meters *

I hope this helps! :)

What is the mass of an object that is accelerated 4 m/s2 by a force of 180 N?
kg
Asap!!!!!!!

Answers

Answer:

The answer is 45 kg

Explanation:

The mass of the object can be found by using the formula

[tex]m = \frac{f}{a} \\ [/tex]

f is the force

a is the acceleration

From the question we have

[tex]m = \frac{180}{4} \\ [/tex]

We have the final answer as

45 kg

Hope this helps you

Answer:

I am so sorry but I need pts...

Explanation:

Use the decoder to get the lock combination

Answers

Answer:

u didnt attach an image or anything so this is quite confusing.

Explanation:

??

Answer:

Okay

Explanation:

What particles form the nucleus of an atoms?

Answers

Answer:

Protons and neutrons

Explanation:

The particles to forms the nucleus of an atom are the protons and neutrons of the atoms.

These materials are located in the tiny nucleus and contributes the most mass of the atom.

Protons are the positively charged particles in an atomNeutrons do not carry any charges. Sum of the protons and neutrons gives the mass number of the atom.

Convert the measurement into scientific notation. 1.25ml

Answers

the answer would be 1.25 × 10

Answer:

The number "1.25" is already at a number that shouldn't be determined using scientific notation. Do you want 1.25ml----> liters ? If so, here

Explanation:

1.25 × [tex]10^{-3}[/tex]

is the amount of liters

Hope this helps!

Have a nice day!

If you find my answer helpful

Pls consider marking my answer as Brainliest! It would mean a lot!

What were some dangers associated with early ballon flights?

Answers

Explanation:

The dangers of ballooning were apparent to aeronauts and the general public. From the early 1800s, attempts to fly over water too often ended in disaster or a narrow escape. Some of the best known aeronauts on both sides of the Atlantic set off across a large body of water never to be seen again.

The dangers of ballooning were apparent to aeronauts and the general public. From the early 1800s, attempts to fly over water too often ended in disaster or a narrow escape. Some of the best known aeronauts on both sides of the Atlantic set off across a large body of water never to be seen again.

What reaction shows a compound breaking apart into separate substances?

Answers

Answer:

Explanation:

decompostion reaction

7 types of motion you experience through the day.

Answers

There is differ motion you go through the day translational, rotational, periodic, and non periodic motion.

Hope this helped you

Sorry if it wrong

Sunlight heating the sand on the beach on a hot summer day is an example of

a. conduction
b. convection
c. radiation
d. none of these

Answers

Answer:

c

Explanation:

Sunlight heating the sand on the beach on a hot summer day is an example of radiation which is electromagnetic radiation.

What is electromagnetic radiation?

The electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.

The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.

In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.The position of an electromagnetic wave in an electromagnetic spectrum is characterized by it's frequency or wavelength.They are emitted by electrically charged particles which undergo acceleration and subsequently interact with other charged particles.

Learn more about electromagnetic radiation,here:

https://brainly.com/question/10759891

#SPJ6

Which element is a metal? A. K
B. Kr
C. F
D. He
please help, if you’re right i’ll give brainliest and 35 more points

Answers

Answer: A

Explanation: Potassium is a metal.

correct answer would be A

:answer question number 7

Answers

Answer:

Volume

Explanation:

yo brother these are so easy, just study bro. I helped you answer 3 already lol

whatever.

Hope I helped :)

why do scientists use scientideic notation?

Answers

Answer:

There is on reason why...

Explanation:

This is one reason astronomers and other scientists use scientific notation when working with very large or very small numbers. Scientific notation is a system for writing and working with numbers that makes it much easier to deal with numbers that are very small or very large.

There you go your awnser

For scientists if they are writing about science and new inventions or discoveries they will need a quicker way to write it and make it faster for other scientists to u der stand for example the periodic table is an easy way of understanding symbols of atoms

Question 1: The mixture that can be separated by filtration is:
a-iron and water.
b- salt and water.
c- vinegar and water.
Question 2: The solid remains on the filter paper is called:
a- filtrate.
b- distillate.
c- residue.
Question 3: The liquid that pass through the filter paper is called:
a-filtrate.
b-distillate.
c-residue.​

Answers

Answer:

Filtration is a process in which insoluble matter is separated from a liquid. Filtration is a separation process in which a mixture is passed through a filter that allows one component to pass-through but blocks another component from passing through because of its matter and consistency. Heterogeneous mixtures can be separated into their respective constituents. For example, a mixture of mud and water can be separated through filtration process easily, because water being liquid will pass through the filter paper easily but the mud will not because of it being solid

Answer:

Q1 b.

Q2 a

Q3. b

Explanation:

filteration= separate solids from liquids or gases using a filter medium.

Which bond is a very strong dipole-dipole force?
A. A covalent bond
B. An ionic bond
C. A hydrogen bond
D. A metallic bond

Answers

Answer : C. A hydrogen bond

Explanation:

Answer:

A. covalent bond

Explanation:

dipole-dipole interaction results from difference in electronegativity , eg H-F where Fluorine has strong electronegativity but Hydrogen has less electronegativity. hence the bond has dipole moment towards F atom.

which of the following is the name given to the pairs of valence electrons that do not participate in bonding in diatomic oxygen molecule? A. unvalenced pair B. outer pair C. inner pair D. unshared pair

Answers

The answer to your question is

D: Unshared Pair

Hope this helps you :))))

The name given to the pairs of valence electrons that do not participate in bonding in diatomic oxygen molecule is called Unshared pair

Unshared pair of electrons are also called Free radicals, lone pair or non bonding pairs, they refer to electrons that do not take part in covalent bonding of molecules.

Unshared pair together with shared pair occupy the  valence electron shell and make up the valence electrons.

Diatomic oxygen molecule has 4 pair of unshared electrons

See more here: https://brainly.com/question/15451932

Formaldehyde, CH20, and acetic acid, C2H4O2, have the same empirical formula but different?
kinds of cations.
kinds of atoms.
b. kinds of anions.
d. molecular formulas.

Answers

Explanation:

molecular formula

....

Formaldehyde, CH20, and acetic acid, C2H4O2, have the same empirical formula but different molecular formulas. Therefore, option D is correct.

What is Chemical formula ?

A chemical formula lists the elements that comprise the compound as well as the number of atoms of each element in the compound's smallest unit, whether a molecule or a formula unit. Knowing the elements' names and a few basic rules allows us to name simple compounds given a chemical formula.

Chemical formulas are classified into three types: empirical, molecular, and structural.

Empirical formulas depict the simplest whole-number ratio of atoms in a compound, whereas molecular formulas depict the number of each type of atom in a molecule and structural formulas depict how the atoms in a molecule are bonded to each other.

Thus, Formaldehyde, CH20, and acetic acid, C2H4O2, have the same empirical formula but different molecular formulas, option D is correct.

To learn more about the chemical formula, follow the link;

https://brainly.com/question/29031056

#SPJ6

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