HELP FAST PLEASE !!!!

Answers

Answer 1

Explanation:

See the table above. Periods at the side, metals at the top, non metals to the right, group to the right of that

Related Questions

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

Which of the following is a physical change?

Dissolving salt in water

Digesting food

Burning wood

Oxidation

Answers

Digesting Food

Explanation I Just Know

Air pressure is greatest near the surface of the Earth in the _______.

Question 7 options:

Thermosphere

Mesosphere

Troposhere

Exosphere

Answers

The Troposphere because it contains about half of all the air in the entire atmosphere

ch4, o2 > co2, h20

1. Does this chemical reaction follow the law of conservation of matter?

2. How many atoms of hydrogen do you have in the reactants? How many atoms of hydrogen to you have in the product?

3. Give 1 reason why this chemical reaction/equation follows OR does not follow the law of conservation of matter?

Answers

1. No, it doesn't.

2. 4 Hydrogen atoms are on the reactants side and 2 hydrogen atoms on products side.

3. Because the mass of reactants is not equal to the mass of the products thus it doesn't follow the law of conservation of matter.

But on balancing the eqn,

CH4 + 2O2 > CO2 + 2H2O

The above eqn will follow the law of conservation of matter because the mass of reactants is equal to the mass of products.

What does the atoms of metals have

Answers

Answer:

I dont know

Explanation:

because I dont know

Good luck because that’s easy bro

Someone pls help me I will make you brain

Answers

C is your answer
Have a good day

Answer:

Explanation:

II and III

in the reaction of aluminum metal and oxygen gas to make aluminum oxide, how many moles of aluminum will react with 0.80 grams o2?

Answers

Explanation:

When 6.38 moles of O2 and 9.15 moles of Al react, the ratio of aluminum to oxygen is 9.15/6.38 = 1.434. This shows that all of the oxygen is consumed before the aluminum and when the reaction ends the reactant aluminum is left. The number of moles of Al2O3 formed is approximately 4.25 moles.

Dãy các chất tác dụng được với dung dịch HCl loãng tạo thành sản phẩm có chất khí
A.BảO,FE,CaCO3 B.Al,MgO,KOH

C.Na2SO3,CaCO3,Zn D.Zn,Fe2O3,Na2So3

Answers

Na2so3 same as na2so3 you have to understand the question

Someone pls help me I will make you you brain

Answers

Answer:

I and II

Explanation:

| and ||| is the correct answer.

Hope this helps!

new substances are formed in a chemical reaction as a result of

Answers

Answer:

New substances formed when breaking of bonds take place and new bonds get formed which results in formation of new products. That breaking of bond is a chemical change because in such a process composition of substance gets changed and forms a new substance.

The energy of motion is known as potential energy.

Question 1 options:
True
False

Answers

Answer:

False

Explanation:

This is because potential energy is energy that it not used yet.

how many atoms of oxygen o are represented on the left side of the arrow in the chemical reaction

Answers

Answer:

two oxygen atoms on the left side of the arrow

which solids will melt under applied pressure? check all that apply.

Answers

The answer for this question is ice

According to the forces of attraction , ice is a solid which will melt under applied pressure.

What are the forces of attraction?

Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.

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Fossil fuels—such as coal, oil, and natural gas—come from ancient, and long dead, plant and animal matter. These fuels have been generated through millions of years of the Earth's geologic processes. Most fossil fuel reserves are found underground, relatively close to the Earth's surface.

At the current rate that human civilization is burning fossil fuels for energy, the Earth's geologic processes have no chance of keeping pace. This means that fossil fuels are a _______ energy resource.
A.
synthetic
B.
nonrenewable
C.
plentiful
D.
renewable

Answers

Answer:

Nonrenewable

Explanation:

There is a finite supply of fossil fuels

Minerals have:

A. an exact chemical composition, such as SiO2.
B. a small range in chemical composition, such as (Mg, Fe)2SiO4
C. a large range in chemical composition, such as (Mg, Fe, Al, K, Na)2SiO4
D. no set chemical composition.

Answers

Answer:

Explanation:

i don't know minerals a good for the body

1
16. What biological concept was Mendel studying when he crossed pea plants many times
over many generations?
A dominant and recessive traits
B. imbalance in ecosystems
C. predator-prey relationships
D. male and female genetic difference

Answers

Answer:

Explanation:

A: Since the Pea plant matured very quickly he was able to identify how the dominant and recessive genes worked.

what is the frequency of a 2,600 cm wave

Answers

Answer: 1.15 × 10⁷ Hz

Explanation:

Frequency = Speed of Light ÷ Wavelength

= (2.99 × 10⁸ m/s) ÷ (2.6 × 10 m)

= 1.15 × 10⁷ Hz

The frequency of a wave of wavelength 2600 cm is 1.15 × 10⁷ Hz

Notes:

Hz ≡ /s

1 m = 100 cm

The frequency of a 2,600 cm wave is 1.15 × 10⁷ s⁻¹

From the question,

We are to determine the frequency of a wave with wavelength 2600 cm.

Using the formula

[tex]c = \nu \lambda[/tex]

Where c is the speed of light (c = 3.0 × 10⁸ m/s)

[tex]\nu[/tex] is the frequency

[tex]\lambda[/tex] is the wavelength

Then, we can write that

[tex]\nu = \frac{c}{\lambda}[/tex]

From the question

λ = 2600 cm = 26 m

Putting the parameters into the formula, we get

[tex]\nu = \frac{3.0 \times 10^{8} }{26}[/tex]

[tex]\nu = 0.11538 \times 10^{8}[/tex]

[tex]\nu \approx 1.15 \times 10^{7} \ s^{-1}[/tex]

Hence, the frequency of a 2,600 cm wave is 1.15 × 10⁷ s⁻¹

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Draw the circuit symbol that would represent the 9V battery

Answers

I hope this picture helps

how are the light reactions and the calvin cycle connected?

Answers

Answer:

The light reactions provide the Calvin cycle with oxygen for carbon fixation, and the Calvin cycle provides the light reactions with sugars to produce ATP. The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the Calvin cycle provides water and electrons to the light reactions.

Explanation:

The energy that drives the Calvin cycle comes from ATP and NADPH produced by the light reactions, that is, the energy capture reactions in the first stage of photosynthesis.

The Calvin cycle is a process that results from photosynthesis made by plants, through which Carbon dioxide is absorbed and transformed into organic material or biomass.

In the light phase, light energy is stored in organic molecules that provide energy to carry out the process (ATP) and have the ability to donate electrons (reducing power) to another molecule such as NADPH.

These molecules formed in the light reactions participate in the reactions that make up this cycle during which carbon dioxide (CO2) taken from the atmosphere is fixed, incorporating it into the body in the form of glucose thanks to the action of the enzyme RuBisCo.

Therefore, we can conclude that the molecules constituted in the light reactions (ATP and NADPH) participate in the reduction of carbon dioxide (CO2) through the series of reactions of the Calvin Cycle.

Learn more about the Calvin Cycle here: https://brainly.com/question/13984369

Who created the "plum pudding model" of the atom?

Thomson
Rutherford
Crooks
Chadwick

Answers

It was first proposed by J. J. Thomson in 1904.

Read the following paragraph from the section "Dreaming Of A World Deep Below."

The interior of our planet has long held a fascination for philosophers and storytellers. Some have speculated that another inhabited world lies beneath our own. In 1864, Jules Verne’s novel "Journey to the Center of the Earth" described the fictional adventures of explorers traveling under our planet’s surface. It was a best-seller. People wondered if the world Verne described below our own could be real.

Why does the author include this paragraph in the article?
Question 9 options:

to show how much scientific progress regarding the Earth's core was made during Lehmann's lifetime

to explain a number of popular theories concerning the composition of the Earth's core

to demonstrate how Lehmann's discovery confirmed what Jules Verne already knew about the Earth's core

to describe the attitudes Lehmann needed to overcome in order to introduce her work to the scientific community

Answers

Answer:

Explanation:

The interior planet has fascinated a lot of people so a lot of theories have been made about what's in there.

The reason author include this paragraph in the article is to explain a number of popular theories concerning the composition of the Earth's core. Thus, option B is correct.

What is acronym?

Acronym has been defined as the short form of long words such as very important person and the acronym of very important person has been VIP. The word acronym has been used to denote the short term of the word in which two or more than two words combined together to form new short word.

Acronym always starts with capital latter and the first word's letter is always capital. Capitalization has been the most important part of the writing as it has the rule of writing that the first latter of the word that starts a sentence must be capital or starts with capital latter.

The sentence has a group of sensible or meaningful word that combines together to form a complete and senseful sentence. The sentence has of several type such as positive sentence, negative sentence, exclamatory sentence as well as introgative sentence.

Therefore, The reason author include this paragraph in the article is to explain a number of popular theories concerning the composition of the Earth's core. Thus, option B is correct.

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Is this true or false for this question?!

Answers

Answer:

True, Electrons are way smaller then protons

Explanation:

Someone pls help me I will make you brain

Match them plsss

Answers

Answer:

carbon monoxide - B

nitrogen oxides - D

particulate matter - A

sulfur oxides - C

Explanation:

not sure if i'm fully correct though

Answer:

Carbon monoxide is (B)

Nitrogen oxides is (D)

particulate matter is (A)

sulfur oxides is (C)

Explanation:

sorry if I did it wrong

20.What is it called when particles in a solid or liquid move slower and closer

together?

Answers

Answer: freezing

Explanation:

when the atoms or molecules in a solid or liquid are moving slower and closer together, it is called brrrrrrrrr freezinf

Which is an outer planet?

Answers

Answer:

Saturn

Explanation:

Mercury, Venus, and Mars are all inside the asteroid belt. Saturn is outside the asteroid belt along with Jupiter, Neptune, Uranus, and if you count, Pluto

matter is passed down from the living part of an ecosystem to the non living part when witch of the following take place ?

Answers

I don’t know about that

What charge would an ion have if it had more electrons than protons?
A. It would have a net positive charge.
OB. It would have no charge.
C. It would have a net negative charge.
Ο Ο
D. It would be neutral, since electrons would be outside the nucleus.

Answers

Answer:

it will have a net negative charge and it is known as anion

who is generally called the father of modern chemistry

Answers

Explanation:

Antoine Lavoisier is the answer

Answer:

Antoine Lavoisier is the father of chemistry

Explanation:

Antoine-Laurent de Lavoisier, also Antoine Lavoisier after the French Revolution, was a French nobleman and chemist who was central to the 18th-century chemical revolution and who had a large influence on both the history of chemistry and the history of biology.

If a piece of metal has a density of 9.865 g and a volume of 14 ml, what is its mass?

Answers

Answer:

I think the answer is 138.11 gram

Explanation:

Describe how the particles in a substance are represented in particle theory.

Answers

Answer:

The particle theory of matter is a model that describes the arrangement and movement of particles in a substance. The model is used to explain the physical properties of solids, liquids and gases. Particle arrangement and movement

Explanation:

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