please help ASAP ty :)

Answer:

potassium

Explanation:

b/c electronegativitu

Answer:

It represents the noble gas that precedes the period before Potassium.

Explanation:

Period before potassium is 3, the noble gas in that period is Ar (Argon). So when condensing the electron configuration of Potassium, Argon can account for 18 electrons instead of writing out 18 electrons in full form from 1s2, 2s2 etc.

Answer:

c

Explanation:

bacteria can be a single cell and archaebacteria live in the human body

Answer:

c

Explanation:

Answer:

Yes they are triglycerides

Explanation:

Triglycerides are esters derived from glycerol and three fatty acids.

If we look at the structures closely, we will notice that the compounds are composed of glycerol and three fatty acids.

Hence the structures are triglycerides. The first structure is an unsaturated triglyceride while the second structure is a saturated triglyceride.

If the resistor is in series to the voltage supply then 0.12A current will also flow through it.

(How the resistor is placed in relation to the supply is unknown)

Answer:

Solubility

Explanation:

Solubility units that incorporate units of solution include grams of solute per 100 grams of solution or grams of solute per liter of solution. Another way to express solubility is in moles of solute per liter of solution; this ratio is called "molarity."

Answer:

7

Explanation:

ATOMIC NUMBER IS NUMBER OF PROTONS

PROTONS have positive charge

Answer:

7

Explanation:

sorry i accidentally put a 2 first

Answer:

A. Al(s)

Explanation:

Answer: Your skin is your largest organ—22 square feet on average— Cleansers and body washes—might actually be doing us more harm than good, but, unfortunately, it absorbs harmful chemicals we put on it, too.

Explanation: Some are bad like scented body wash and hair stuff. But unscented is WAY better than scented, I learned that the hard way...

Answer:

the answer is C, 30g

Answer:

C

Explanation:

C. red blood cell → heart tissue → circulatory system

the order of organisation is

cell --> tissue --> organ --> organ system --> organism

hope this hepls x

branilest plz?

Answer:

C is the answer

the red blood cell are a part of the heart tissue which makes up the circulatory system

Answer:

It should be 9

Explanation:

That’s how I remember drawing them I took chemistry last year. Tell me if it’s good.

Answer:

Mass of 0.50 bushel = 5 Kg

Explanation:

Given data:

Number of apples in 0.20 bushel = 1 dozen

Mass of 1 dozen apple = 2.0 Kg

Mass of 0.50 bushel apple = ?

Solution:

First of all we will calculate the number of dozen of apple in 0.50 bushel.

 (1/0.20) ×0.50 = 2.5 dozen

Mass of 0.50 bushel = 2.5 dozen × 2.0 Kg/1 dozen

Mass of 0.50 bushel = 5 Kg

Answer:

Answer:

A molecule of Water consists of two atoms of hydrogen and one atom of oxygen.

The chemical formula for water is H2O .

Each hydrogen atom in a water molecule shares one valence electron(s) with the oxygen atom.

The chemical formula for carbon dioxide is CO2 .

The chemical formula CO represents the compound carbon monoxide.

Atoms or ions in compounds are held together by chemical bond.

Three types of chemical bonds are covalent, ionic, and metallic bonds

Explanation:

Family is usually considered to be the most important agent of socialization. They not only teach us how to care for ourselves, but also give us our first system of values, norms, and beliefs. ... Another agent of socialization that relates to school is our peer group.

Answer:

Explanation:

I just had this question on my test

Answer:

PubChem CID 6393

Structure  

Find Similar Structures

Chemical Safety  

Compressed Gas

Laboratory Chemical Safety Summary (LCSS) Datasheet

Molecular Formula CF4

Molecular Weight  

88.004 g/mol

Explanation:

Answer:

Li2Se

Lithium selenide

Explanation:

As per Le Cha-tel-ier’s principle, the true statement should be option b. The equilibrium constant changes with a change in temperature.

It defined that if there is any changes in the temperature, pressure, volume, or concentration of a system so it should be leads into the opposing changes in the system for accomplishing a new equilibrium state.

Hence, we can conclude that As per Le Cha-tel-ier’s principle, the true statement should be option b. The equilibrium constant changes with a change in temperature.

Learn more about equilibrium here: https://brainly.com/question/24207087

Answer:

b

Explanation:

Answer:

Light waves

Explanation:

It isn't sound because it isn't infrared, involve electromagneticism, or light/radiation. An ocean wave is a literal wave of water, and a wave traveling along a rope is way off course. Choose a light wave. Also, brainliest would be nice. Glad to help

Answer:

detail is given below.

Explanation:

The charged particles of nucleus are protons while neutrons are neutral having no charge.

We know that an atom consist of electrons, protons and neutrons. Neutrons and protons are present inside the nucleus while electrons are present out side the nucleus. Electron has a negative charge and is written as e⁻. The mass of electron is 9.10938356×10⁻³¹ Kg . While mass of proton and neutron is 1.672623×10⁻²⁷Kg and 1.674929×10⁻²⁷ Kg respectively.

Symbol of proton= P⁺  

Symbol of neutron= n⁰  

The number of electron or number of protons are called atomic number while mass number of an atom is sum of protons and neutrons.

one proton contribute 1 amu to the total weight. There are 20 protons and 20 neutrons in Ca thus its atomic mass is 40 amu.

While the atomic number is 20.

Answer:

1.4 g CaO

Explanation:

Given data:

Mass of calcium carbonate = 2.5 g

Mass of Cao remain in tube = ?

Solution:

Chemical equation:

CaCO₃    →     CaO + CO₂

Number of moles of CaO:

Number of moles = mass/molar mass

Number of moles = 2.5 g/ 100 g/mol

Number of moles = 0.025 mol

now we will compare the moles of CaO with CaCO₃.

                    CaCO₃        :          CaO

                        1              :             1

                    0.025         :         0.025

Mass of CaO:

Mass = number of moles × molar mass

Mass = 0.025 mol × 56 g/mol

Mass = 1.4 g

Answer:

1.4g CaO

Explanation:

Did the exam and got it right. Hope this helps

Answer:

yes

Explanation:

the definition for time is correct, the definition for speed is incorrect

Answer:

2.5e-5

Explanation:

Answer:

a

Explanation:

Complete Question:

Theresa creates an experiment where she mixes two red-colored substances together in a container and observes the solution slowly changing from red to blue for the next eight minutes. The solution becomes completely blue after eight minutes. What does this represent about the type of change happening in the container?

Group of answer choices

A. A chemical change started immediately and finished at eight minutes.

B. A non-chemical change started immediately and finished at eight minutes.

C. A chemical change occurred at four minutes.

D. A non-chemical change occurred at four minutes.

Answer:

A. A chemical change started immediately and finished at eight minutes.

Explanation:

A chemical reaction can be defined as the chemical process which typically involves the reaction between two or more chemical elements (substances) to form a new compound, through the rearrangement of the ionic or molecular structure of each chemical element.

This ultimately implies that, a chemical reaction is a chemical change that immediately starts when two or more molecules of a chemical element (substance) known as reactants are combined together to form a new product (compound).

In this scenario, Theresa creates an experiment where she mixes two red-colored substances together in a container and observes the solution slowly changing from red to blue for the next eight minutes. The solution becomes completely blue after eight minutes. Thus, what this represent about the type of change happening in the container is that, a chemical change (from red to blue) started immediately and finished at eight minutes.