Calculate the ratio of H+ ions to OH– ions at a pH = 7. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide. Then divide the H+ concentration by the OH– concentration. Record this calculated ratio in Table A of your Student Guide.

Compare your approximated and calculated ratios of H+ ions to OH– ions at a pH = 7. Are they the same? Why or why not? Record your comparison in Table A.

What is the concentration of H+ ions at a pH = 7?

mol/L

What is the concentration of OH– ions at a pH = 7?

mol/L

What is the ratio of H+ ions to OH– ions at a pH = 7?

:1

Answer:

1:1

Explanation:

What is the concentration of H+ ions at a pH = 7?

⇒ 0.0000001 mol/L  

What is the concentration of OH– ions at a pH = 7?

⇒ 0.0000001 mol/L  

What is the ratio of H+ ions to OH– ions at a pH = 7?  

1 :1

PLEASE HELP 20 POINTS
Describe some of the main geologic events occurring during the Mesozoic era. This would include formation of mountains, opening of oceans, crunching continents, volcanic activity, major deposition of sediments, major structures eroded, etc:

Can someone plz answer the two questions below plz and thank you!!!

Help please! Thank you! 2o points!

PLEASE HELP I'LL PAY YOU ON MY PAY PAL OMG!!! AND I'LL GIVE A BRAINLY


Our Earth includes a variety of precious natural resources that include sunlight, water, fossil fuels, and forests. Some resources are stored in different forms, which can be processed to obtain useful products, such as petroleum, minerals, or metals. In terms of energy resources, there are two types of natural resources that are used to generate energy: renewable resources, such as water, sunlight, and wind; and nonrenewable resources, such as such as coal, natural gas, or crude oil. The nonrenewable energy sources are widely used around the world. When fossil fuels are burned for energy, carbon dioxide (CO2) is released into the environment. Carbon dioxide is one of the greenhouse gases in the atmosphere that helps to keep the planet warm, as it traps the radiation coming from the Sun. Too much carbon dioxide in the atmosphere can retain high amounts of thermal energy and cause the temperature to rise, which can have devastating effects on the environment. In the last century, the level of atmospheric carbon has increased at an alarming rate.


The graph shows the increase in the concentration of carbon dioxide in the atmosphere since 1900.


QUESTION: Before the eighteenth century, coal was used by humans in many places on Earth for cooking and heating. In the eighteenth century, after the industrial revolution began, fossil fuels like coal were increasingly used to generate power and energy. Today, many manufacturers and nearly all forms of modern transportation depend on these fossil fuels. What effect has this human dependence on fossil fuels had on the world's climate? How has technology contributed to this effect?

Scientists studied the evolution of horses. They concluded that horses evolved with the emergence of grasslands and an increase of predators. The digits of their early Eocene ancestor evolved into hooves. The diet changed from foliage to grasses. The molar teeth developed and became stronger. Which statements are supported by this evidence?
The digits of the horses’ feet underwent modifications, enabling them to run faster from predators.
The molars of the horses underwent changes so they could chew meat.
The emergence of grasslands over time led to the development of strong molar teeth in horses.
The digits were modified to enable the horses to graze better on hard, rocky surfaces.
Molars became bigger to fit into the jaw structure of modern horses.


You have to pick two

Help 15 points

What 2 major air masses lead to the tornadoes in Tornado Alley?

_________ are the four largest satellites that orbit Jupiter

The circulatory system can help maintain body temperature by controlling the flow of blood to the skin.
True

False

Study the table about Earth’s interior.

A 4 column table with 5 rows. First column is unlabeled with entries: Crust, uppercase mantle, Lower mantle, Outer core, Inner core. Second column is labeled Thickness in kilometers with entries: 30, 720, 2,171, 2,259, 1,221. Third column is labeled Density in grams per centimeters cubed, divided into Top and Bottom columns. Top entries are: 2.2, 3.4, 4.4, 9.9, 12.8. Bottom entries are 2.9, 4.4, 5.6, 12.2, 13.1. Fourth column is labeled Types of Rock Found with entries: Silicic rocks, Peridotite, Magnesium and silicon oxides, Iron plus oxygen, Iron plus oxygen.

Which conclusion is supported by information in the table?

The mantle is thinner than the crust.
The core is the thickest of Earth’s layers.
The inner core is thicker than the outer core.
The mantle is the thinnest of Earth’s layers.

How do earthquakes impact ecosystems?



pls help me!!!!!! :)

is colorblindness a dominant or recessive trait? Explain your answer.

help me please put the names of the planets in increasing order based on their distance from the Sun.

Please help, this is to difficult for my last two brain cells to configure ;-;

First-person to answer with an explanation get brainliest
A student is comparing the organelles found in the cells of a milkweed plant and in the
cells of a butterfly, using the Venn diagram shown below.

Where should the student place the terms “chloroplasts” and “mitochondria”?

Infer in 2004, a fossil of an organism that had fins and gills, but also lungs and wrists, was discovered. What might this fossil suggest about evolution?

PLEASE HELP, WILL GIVE POINTS AND BRAINLY!!!!
The pictures show the Arctic ice cap in 1979 and 2003.
Do the pictures provide evidence for global warming? Explain.

What best explains the graph shown below?

A. Temperature is dropping because greenhouse gases are high and increasing


B. Temperatures are dropping because greenhouse gases are high and constant


C. Temperatures are dropping because greenhouse gases are low and constant.


D. Temperatures are dropping because greenhouse gases are low and decreasing.

Plz...Help...Only Part B


Baxter is thinking about buying a car for $18,500. The table below shows the projected value of two different cars for three years.


Part B: Write one function for each car to describe the value of the car f(x), in dollars, after x years. (4 points)

HELP URGENT!! My bunny just had babies they are not moving what should I do??????

Ocean water is-
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B. compound
C. element
D. fresh water

HELP help HELP help HELP help

Does anyone know anything about rabbits?

Heey may someone plz help me with these two questions thx!!!

The main difference between ocean water and lake water is that ocean water contains - *

A. oxygen
B. salt
C. sediment
D. plants

what is this planet
Distance from Sun- 0.72 AU 9.54 AU
Planet composition- rocky mantle, iron core hydrogen, helium
Gases in atmosphere-very dense atmosphere that is 96.5% poisonous carbon dioxide and 3.5% nitrogen mostly hydrogen and helium
Number of moons -0 62
Rings- no rings

In the boxes below, fill in the appropriate neuron parts, structures, or functions.

Which is an example of trace fossils?
A. an insect getting stuck in a tree sap that hardened
B. sediment hardening around a trilobite
C. footprints from a dinosaur in mud that hardened
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Electricity is defined as
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B flowing atoms
C flow of electrons
D flow of water

Are there any more endangered animals who are experiencing a bottleneck effect. I read an article and I had this question in mind.

Some areas of the world are experiencing more desert-like conditions due to climate change. This change most favors the survival of species with abilities to do which of the following?