Chemistry High School

I will brainless who can answer this all pleaseeeeej​

I Will Brainless Who Can Answer This All Pleaseeeeej

Answers

Answer 1

Answer:

False, True, True, False, False, not sure, True, False, True, True

here u go

Related Questions

what is a acid and how does it react with metals (chemical reaction)?

Answers

Explanation:

Acids are substances whose ph is lower than 7.Acids react with most metals to form a salt and hydrogen gas.

How would the boiling point of water be affected if you doubled the amount of water?

Answers

Answer:

The boiling point wouldn´t be effected. The amount of time it would take to get it to that point would increase

Explanation:

what does the bottom layer represent?

Answers

Answer:

A blanket

Explanation:

bottom layer is a nice comfy blanket you could use to sleep with

Explanation:

Something comfy you can use for yourself or others.

Is hot tea a substance or a mixture

Answers

Answer:

IS A SUBSTANCE AND MIXTURE

Dissolving and melting are similar because both
A. result in a change in mass.
B. are kinds of physical change.
C. involve even mixing of substances.
D. result in new substances being formed.

Answers

Answer is B are kinds of physical change.

B.) are kinda of physical change.
Is the correct answer <3

Two scientists are investigating the properties of water. In one experiment, they notice that water breaks down to hydrogen and oxygen gas during a chemical reaction. Which of the following does this experiment demonstrate

A. it demonstrates that a water molecule consists of two hydrogen atoms and one oxygen atom.

B. it demonstrates that water consists of atoms

C. it demonstrates that water is a compound

D. it demonstrates that water is an element​

Answers

Answer:

A

Explanation:

Obtain and Communicate Information 1. SEP Obtain Scientific Information Conduct research to learn about the history of atomic models and the scientists who developed the models. Identify any experimental evidence and reasoning that supported each model. I​

Answers

Answer:

Sorry I don't know.

Explanation:

I'm in 8th grade.

what is the density of an object with a height of 1 and a mass of 36

Answers

you will divide 36 by 1 and multiply 2 on both sides which makes 72 by 2 so 2into 1 is 2 and 2 into 36 is 72

true or false: Halogens are very stable because they have a full outer shell of 8

Answers

Answer:

True

Explanation:

Halogens are very stable because they have a full outer shell of 8

true or false?

Brainiest plz and hope this answer helped let me know if you need any more help I am glad to help!

It's true!

how many neutrons does the isotope of hydrogen called deuterium have

Answers

Answer:

The deuterium has one neutron and one proton (mass number equals 2) whereas, the far more common hydrogen isotope, protium, has no neutons in the middle.

Explanation

I need help with this , here are the words ( black,radiation, time, holes and universe

Answers

Black holes….. universe……. radiation……. time

Use metric and U.S. conversion factors to solve the problem.

Question - If a student is 175 cm tall, how tall is the student in meters?

Answers

Explanation:

100cm = 1m

1cm=1/100 m

175cm = 175/100 m = 1.75m.

hope this helps you.

If a student is 175 cm tall, then according to the metric system the same student is 1.75 m tall.

What is a Metric system?

A metric system may be defined as a type of system that significantly weighs and measures the mass and distance respectively in which the meter is the unit of length and the kilogram is the unit of weight.

A metric system is a standard system of measurement which utilizes the meter, liter, and gram as base units of length for distance, capacity for volume, weight for mass, etc.

According to the question, the height of a student in cm = 175 cm.

Then, from the general conversion rule,

1 meter = 100 cm.

1 cm = 1/100 meter.

175 cm. = 175/100 = 1.75 meters.

Therefore, if a student is 175 cm tall, then according to the metric system the same student is 1.75 m tall.

To learn more about the Metric system, refer to the link:

https://brainly.com/question/1837503

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best answer will be tagged brainliest.... no spamming pliz​

Answers

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A. Chloride ions (CI)

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1. A unit of mass used to express atomic and molecular weights. One proton or
neutron equals one mass unit.

Atom

Atomic mass

Nucleus

Amy

Protons

Neutrons

Uranium

Electrons

Hydrogen

Answers

Answer:

Atomic mass

Explanation:

It is the unit used o express atomic and molecular weights.

Hoàn thành dãy biến hóa sau :
S→SO2→SO3→H2SO4

Answers

Answer:

I don't know what your asking

You have been handed a 1892.6g sample of Rion and determine that it has
a volume of 200.0 mL. What is the density of Rion?

Answers

Answer:

9.46 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 1892.6 g

volume = 200 mL

We have

[tex]density = \frac{1892.6}{200} \\ = 9.463[/tex]

We have the final answer as

9.46 g/mL

Hope this helps you

Someone pls help me I will make you brain

Answers

Answer:

the 3rd option is the answer

How many grams of H2O is needed to produce 0.75 moles of ?​

Answers

Answer:

H2O2 + H2S → 2H2O + S? that is the answer

Explain how copper conducts electricity?

Answers

Answer:

Copper is a metal made up of copper atoms closely packed together. As a result, the electrons can move freely through the metal. For this reason, they are known as free electrons. They are also known as conduction electrons because they help copper be a good conductor of heat and electricity.

Explanation:

Which element most likely has the same number of valence electrons as silicon (Si)?
O germanium (Ge)
O arsenic (As)
O phosphorus (P)
O sulfur (S)

Answers

Answer:

germanium (Ge)

Explanation:

both belong to the same group

Answer:

A. germanium (Ge)

Could somebody please give me an example of some physical properties for any substance?

Answers

Answer:

A physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Explanation:

is plasma a matter or no

Answers

Answer:

yes

Explanation:

it is very hot matter and solid, liquid and gas and plasma is the states of matter

Answer: Plasma is a state of matter that is often thought of as a subset of gases, but the two states behave very differently. ... But unlike ordinary gases, plasmas are made up of atoms in which some or all of the electrons have been stripped away and positively charged nuclei, called ions, roam freely. so True.

Explanation: hope this helps!

What volume of water has a mass of 1 kg?

Answers

Answer:

the value of water is 1000

The thermochemical equation for the formation of ammonia (NH3) is shown below. How much energy (kcal) is released when 6.0
mol of H2 reacts?
(Note - when the direction of energy flow is indicated, e.g. "released", the negative sign is not used in the answer.
3 H2(g) + N2(g) →2 NH3(g) triangleH = - 11 kcal

Answers

In the formation of NH₃, -22 kcal are released when 6.0 moles of H₂ react.

Let's consider the thermochemical equation for the formation of ammonia.

3 H₂(g) + N₂(g) → 2 NH₃(g) ΔH = - 11 kcal

As we can see, 11 kcal are released when 3 moles of H₂ react. The heat released when 6.0 moles of H₂ react is:

[tex]6.0molH_2 \times \frac{(-11kcal)}{3molH_2} = -22kcal[/tex]

In the formation of NH₃, -22 kcal are released when 6.0 moles of H₂ react.

Learn more: https://brainly.com/question/2874342

Write each formula to solve for density, volume and mass.

Answers

D= M/V
V= M/D
M= D x V
hope it helps!!

Which is a chemical property of hydrogen?
A.
It is a light gas.
B.
It is a combustible gas.
C.
It is a colorless gas.
D.
It has a boiling point of -252.87°C.
E.
It is a good conductor of electricity.

Answers

Answer:

C

Explanation:

It is a colorless

I hope you help by my answee

B, the other answers are physical properties of hydrogen

PLEASE HELP i have medical issues and i am behind


Only one of the following is a characteristic of a heterogeneous mixture
a. composition is uniform throughout the mixture
b. contains two or more phrases
c. is a pure substance
d. the mixture composition is always the same

Answers

Answer:

b contains 2 or more phases

All alkalis are bases but not all bases are alkalis. True or False?

Answers

Answer:

A substance that neutralizes an acid is generally called a base and the basic substances that are soluble in water and alkali and the properties of alkalis are due to these hydroxide ions(OH−). ... - Thus, conclusively it can be said that all alkalis are bases but all bases are not alkali.

Answer:

This is false

Explanation:

it is actually the opposite, all bases don't dissolve in water, but alkali is a base that does dissolve in water. So, alkalis are bases, but not all bases are alkalis

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what is the density of a object that has a volume of 8 ml and a mass of 22 grams?

Answers

Answer:

The density of the object is 0.32gcm3.

Explanation:

hope this helps

which level of protein structure do beta-pleated sheets and alpha helices represent?

Answers

The primary structure is the amino acids' unique sequence. The polypeptide's local folding to form structures such as the α-helix and β-pleated sheet constitutes the secondary structure. The overall three-dimensional structure is the tertiary structure
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