Chemistry High School

PLEASE HELP ME ILL GIVE BRAINLIEST

Answers

Answer 1

Answer:

TRUE :)

Explanation:

blood is pumped through the pulmonary artery to the lungs, where it picks up oxygen and releases carbon dioxide.

Answer 2

Answer:

False

Explanation:

it takes it to tha lungs.

Related Questions

If a substance is a bad conductor as a solid, but a good conductor as a liquid or when dissolved into water, which type of bond is holding the compound together?

Answers

an ionic bond. covalent bonds do not conduct in a solid or a liquid state, ionic bonds conduct in a liquid state and not in a solid state.

The bond type in the substance is ionic bonding because, ionic compounds in their solid state are not conducting but the ions they furnish when dissolved in water conducts electricity.

What are ionic compounds ?

Ionic compounds are formed between metals and nonmetals. Metals are electropositive and they can easily loss electrons to from cations. Metals donate electrons to the electron deficient non metals to achieve octet.

Ionic bonding is a strong electrostatic force between opposite charged ions. Hence this bond is stronger than other types of bond. This intact bonding make them bad conductors in the solid state.

However they are electrically conducting the molten state or when dissolved in water due to the presence of free ions and electrons in the solution.

Find more on ionic compounds:

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CAN SOMEONE HELP I WILL GIVE BRAINLIST PLEASE!

Answers

Answer:

water, wind, ice, gravity

Explanation:

Explain whether smoke filling up a room is diffusion or not.

Answers

Answer:

It is diffusion

Explanation:

Diffusion occurs when particles move from relatively high concentration to relatively low

Answer:

it is diffusion

Explanation:

smoke rises from one corner of the room and spreads to the rest of the room, resulting in diffusion

How many moles of NaCl are in 2.35 liters of a 4.67 M solution?

Answers

There are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.

HOW TO CALCULATE NUMBER OF MOLES:The number of moles of a substance can be calculated by multiplying the molarity by the volume. That is;

no. of moles = volume × molarity

According to this question, there are 2.35 liters of a 4.67 M solution. The number of moles is calculated as follows:

no of moles = 2.35L × 4.67M

no of moles = 10.97mol

Therefore, there are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.

Learn more about no. of moles at: https://brainly.com/question/14919968

Please help

How do Newton's lawd describe the motion of an object?

Answers

Newton’s laws of motion relate an objects motion to the forces acting on it , in the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact , they apply forces to each other of equal magnitude and opposite direction

why does the d block start in the fourth row of the periodic table

Answers

Answer:

Why does D-block start on the fourth row of the periodic table?

Explanation:

The require more energy to reach 3d than 4s, and they fill up 4p before 4d, and so forth. ... The energy is lower for 6s than 4f, and 4f and 5f are lower in energy than the final D level.

PLEASEEE HELP ASAPPPPP

Answers

Answer: answer A

Explanation: because it gives more detail and a summarizations

If the number of hawks increases, the cricket population would most likely

Plant --> Cricket --> Frog --> Snake --> Hawk

•decrease
•remain the same
•increase

Answers

Answer:

Increase

Explanation:

whoever answers first will get brainliest! this is times so pls help!

You are titrating a 125 mL sample of KOH solution; the pH meter reads 7.00 after the addition of 84.7 mL of 0.750 M HNO3.

What is the concentration of the KOH solution?

A. 0.125 M KOH
B.0.750 M KOH
C.0.508 M KOH
D. 0.0635 M KOH

thanks so much!

Answers

I’m pretty sure it would be D

can the element calcium be found in more than one state of matter?

Answers

Answer:

Explanation:

The element calcium be found in more than one state of matter ( Only in Solid state )

#HopeItHelps

Brainiest:):):):):):)

Answers

Answer:

1) Condensation

2) Temperature

3) Evaporation

4) Kinetic Energy

5) Sublimation

6) Thermal Energy

does a high melting point mean the substance will melt faster or slower?

Answers

Answer:

slower...............

Answer:

it'll melt slower

Explanation:

because it needs to get to a higher temperature ig

Explain how Newton’s cradle demonstrates the law of conservation of energy.

Answers

When power goes up it must come down.

A teacher asks students to make a model of a transform plate boundary. The
students use blocks to represent tectonic plates and slide the blocks past each
other in the directions of the arrows as shown.
Transform Plate Boundary
Plate
Plate
Which event can the student best demonstrate with their model?

Answers

Answer:

C Earthquake

Explanation:

I just took this test and it’s on Quizizz

The event which best describes the model is an Earthquake. Earthquake is

formed when two plate boundaries collide with each other.

The plate boundaries colliding results in them being stuck. Pressure then

builds up between them which results in the plates breaking loose as time

goes on.

The movement that results from the plates breaking loose is what results in

an earthquake being experienced.

Read more on https://brainly.com/question/20409140

Rank the following compounds from weakest intermolecular forces to strongest. Justify your answers.
H2S I2 N2 H2O

Answers

Answer:

N2-non polar<i2< H2s-polar<H2o-polar

Explanation:

what is a geochemist

Answers

an expert in or student of the branch of science concerning the chemical composition of the earth and its rocks and minerals.

how do the structures of particles in substances vary?

Answers

Answer:

Explanation:

The electron configuration for the Magnesium ION is the same as the configuration for which noble gas?

Answers

Neon

The correct noble gas electron configuration of Mg2+ is Ne.

Which type of force is the magnet using to move the nail?
A nail moving towards a magnet
A) Friction
B) Gravity
C) Pull
D) Push

Answers

Answer:

Explanation:

Answer:

Explanation:

gravity

I need help with this question

Answers

Answer: atomic nucleus

Explanation:

Which does NOT affect the speed of an object that is pushed

Answers

Answer:

balanced forces do not affect the motion of the object. Unbalanced forces affect the motion and velocity of an object.

Which of the following statements best explains how the first generation 20 points
lady beetle from the above model changed in the later generations? *
Lady Booties
蒙赖隊徽
Finn
Gameretlen
Later
Genovation
In the first generation, the beetles with the dark spotted trait had a better chance of
survival. The beetles changed their color to better adapt to their environment, and the
species evolved to have a lighter color.
In the first generation, the beetles with the dark spotted trait had a better chance of
survival. The trait mutated over time, causing the beetles with that trait to be darker,
and the species evolved to have a darker color.
In the first generation, the beetles with the dark spotted trait had a lower chance of
sury The trait mutated over time, causing the beetles with that trait to be lighter,
and the species evolved to have a lighter color.
In the first generation, the beetles with the dark spotted trait had a lower chance of
survival. The beetles changed their color to better adapt to their environment, and the
species evolved to have a lighter color.

Answers

Answer:

In the first generation, the beetles changed to have light spots. The beetles with the light spotted trait had a better chance of survival causing the species evolved to have lighter spots.

Answer:

In the first generation, the beetles with the dark spotted trait had a better chance of survival. The trait mutated over time, causing the beetles with that trait to be darker.

Explanation:

In the picture that I had, it shows that some of the beetles in the first generation started to develop spots on their back or wings. It shows that later down the line, their backs start to get even more darker which means that is must be a trait that mutated over time that would allow the beetles with that trait to be significantly darker. They can't just change their traits if they want to so it would have to be something like mutation that caused it.

7. Although carbon's three isotopes are carbon-12, carbon-13, and carbon-14, its
average atomic mass is 12.01 because

A. carbon-12 is the heaviest isotope.

B. carbon-12 is most useful to humans.

C. carbon-12 is the most common isotope.

Answers

Answer:

Explanation:

carbon 12 is most useful to humans

If the temperature of a gas in a balloon remains constant but the pressure
is decreased, the volume of the balloon will
decrease
increase
remain the same
not enough information to predict

Answers

Answer:

increase

Explanation:

if the pressure goes down then the gas will spread out more, meaning the volume will increase

ANSWER FAST
Ozone (O3) is made of three atoms of oxygen. It is _____.

a mixture
an ion
a molecule
an element

Answers

mia shut up i hate u‍♀️

HELP HELP HELP HELP HELP

Answers

In order to properly measure the displacement, the object must be completely submerged, however in the diagram the wood is floating. So the measured displacement will only be a fraction of what it actually is.

In chemical reactions, what does the principle of conservation of mass mean?

Answers

I think It means that any balanced equation is conserved. Meaning that the equation is equal. The law states matter can’t be created or destroyed. In chemical reactions the mass of an element is the same before and after the product. There’s two sides two an equation the reactants side and the product’s side. Hope this helps.

Principle of Conservation of Mass
In simple terms, it means that in a chemical equation, the mass of the reactants is same as mass of products. No mass is created, and cannot be transformed.

what is the name for a change in the environment that causes an organism to change it's activity

Answers

Answer:

the answer is stimilus!

Explanation:

The name of this is called stimulus hope this helps a lot

How many atoms are in 4.3 moles of lithium?

Answers

25.88 atoms of 10^23

im hella confused and need some help

Answers

An oxide is a molecule that has 2 Oxygen atoms in its empirical formula. Stoichiometry would be used as the ratio of Oxygen to Dioxides is 3:2. So 52.29 would be multiplied by 3/2. The answer is 78.435 Mol of CO2 are formed.

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