Answer:
It shows no regular pattern
Explanation:
Physical properties of an element are those we can observe and feel with our senses. Also, the use special equipment can enhance our perception of these properties.
The same physical property can be shared different number elements. On the periodic table, all the elements in group 1 and 2 are metals. This is not very useful for scientists whose emphasis is to distinguish one atom from the other. Therefore, physical properties are highly limited in the organization of the periodic table.What colour will red litmus paper turn if calcium hydroxide and water reacted?
do you want me to try it?
Answer:
Explanation:
blue for base.
Red for ____. What it goes red when in an acidic compound (like coke or pepsi).
So Ca(OH)2 is a base. That means it will turn blue.
Hadron colliders are able to add protons in an element. When a proton is added to an existing element then;
1.An ion is formed with same number of electrons
2. Another isotope of the element is formed with same number of neutrons
3. A second nucleus is formed with more neutrons
4. Another element is formed with greater atomic number
Answer:
4. Another element is formed with greater atomic number
Explanation:
Ions only have a different amount of electrons and have the same amount of protons and neutrons.
Isotopes only have a difference in neutrons.
However, only a difference in protons will make another element.
Hence, 4 is the answer.
Hope this helped!
Explain how the complexity and diversity of living things has changed over time.
Answer:A complex biological structure with many interacting parts might appear, at first glance, as if it were originally created in its present form with all its interlocking components fully formed and intact. It doesn’t seem possible that they developed step by step via biological evolution. In Darwin’s Black Box, Michael Behe introduces a term that he and other proponents of Intelligent Design use for this concept: irreducible complexity. No part of an irreducibly complex system has any apparent function except in its relation to the other parts.
How many grams of barium hydroxide are required to dissolve in 156 g of water to make a 0.247 m solution?
Molar mass of Ba(OH)2: 171.346
Explanation:
Moles of Barium hydroxide = 0.156dm³ * (0.247mol/dm³) = 0.0385mol.
Mass of Barium hydroxide = 0.0385mol * (171.346g/mol) = 6.60g.
Answer:
6.60
Explanation:
1. Which type of blood cell is the most numerous in the body?
O a. red blood cells
O b. white blood cells
c. platelets
d. plasma
Answer:
red blood cells
Explanation:
I'm not so sure though
what is the bronsted lowry definition of an acid?
Answer:
An acid is the specie which can donate a proton.
Explanation:
Bronsted lower acid:
An acid is the specie which can donate a proton.
Bronsted lower base:
A base is the specie that can accept the proton.
For example:
HCl + NH₃ → NH₄⁺ + Cl⁻
Here in this reaction HCl is act an acid because it donate the proton while NH₃ is Bronsted lower base because it accept the proton.
Bronsted lowery acid = proton donor
Bronsted lowery base = proton accepter
Pls Help me I am stuck on this question.
Answer:
compound is the answer
my mom is making SPAGET
Answer:
yes
Explanation:
Why do flowers have brightly-coloured petals
Answer:
Petals are modified leaves that surround the reproductive parts of flowers. They are often brightly colored or unusually shaped to attract pollinators. Together, all of the petals of a flower are called corolla.
Ethyl alcohols formula is C2H50H,what is this?
a.A element
b.A compound
c.A mixture
Explanation:
C2H5OH is ethanol, which is a compound.
how many molecules of water are found in 1.5mol of water ?
Answer:
9.033×10^23 Molecules
Explanation:
We are given,
No.of moles of water = 1.5 moles
The approximate value of Avagadro's Constant =6.022×10^23 particles
Hence,
As we know that,
No.of particles = No.of moles × Avagadro's Constant
Here,
No. Of Water Molecules in 1.5 moles of water = 1.5×6.022×10^23
No.of Water Molecules in 1.5 molesof water=9.033×10^23 Molecules
Na+ is an ion give reasons
Answer:
Na+ represents a sodium atom that has lost an electron.
Explanation:
An atom that has gained or lost electrons is called an ion.
Answer:
I think because of the positive radical it's carrying
Why is an occluded front considered the most complex type of front?
Answer:
folloow mw tiktokjonathan_dion21 for a free cookie
Explanation:
How many atoms of S are there in the reactants?
Sg + F2 ---> SFO
Answer:
One atom
Explanation:
which statements are wrong about atoms
Answer: Atoms are not able to exist independently
Explanation:
what are the difference between an animal cell and plant cell
Answer:
ANIMAL CELL
Animal cells are generally small in size.
They don't have a cell wall
Except the protozoan Euglena, no animal cell possesses plastids.
Vacuoles in animal cells are many, small and temporary.
Animal cells have a single highly complex and prominent Golgi apparatus.
Animal cells have centrosome and centrioles.
PLANT CELL
Plant cells are larger than animal cells.
The plasma membrane of plant cells is surrounded by a rigid cell wall of cellulose.
They have Plastids
Most mature plant cells have a permanent and large central sap vacuole.
Plant cells have many simpler units of Golgi apparatus, called dictyosomes.
Plant cells lack centrosome and centrioles.
Hope this helps!
Answer: Differences between animal and plant cells :
Animal cell :- Animal cells are generally small in size. Cell wall is absent. Except the protozoan Euglena, no animal cell possesses plastids. Vacuoles in animal cells are many, small and temporary. Animal cells have a single highly complex and prominent Golgi apparatus. Animal cells have centrosome and centrioles. Plant cell :- Plant cells are larger than animal cells. The plasma membrane of plant cells is surrounded by a rigid cell wall of cellulose. Plastids are present. Most mature plant cells have a permanent and large central sap vacuole. Plant cells have many simpler units of Golgi apparatus, called dictyosomes. Plant cells lack centrosome and centrioles.
Explanation:
How many atoms are there in 1.225 moles of iron?
Show work
Answer:
1.2 × 10 to the power 25 . atoms of iron divide by a line 6.022× iron atoms per mole =~ 20 moles
the side chains of amino acids may contain..
a) acidic and basic groups.
b) polar groups.
c) nonpolar groups.
d) All of the above
Answer:
(d) All of the above
Explanation:
Acidic:-
Glutamic Acid
Basic:-
Lysine
Polar:-
Histidine
NonPolar:-
Leucine
The side chain of amino acids may contain
d) all of the above
Amino acids are the building blocks of proteins.
Amino acids:Amino acids are the building blocks of proteins and play an important role in body functions. They are needed for vital processes like cell building and synthesis of hormones and neurotransmitters (brain chemicals). They may also be taken as supplements.
They contain acidic and basic groups, polar and non-polar groups as well.
Examples are Alanine, Arginine, Asparagine, etc.
Find more information about Amino acid here:
brainly.com/question/1302816
What object do you think will take up
more space? Why do you think this?
Answer:
solids
Explanation:
BC they r heavier than liquid and gas
Based only on the distance between the valence electron and the nucleus, which atom has a stronger attraction between its nucleus and its valence electrons? How do you know? Please explain in at least 2 sentences.
lithium and sodium
Answer:
Atomic radius is the distance from the atom's nucleus to the outer edge of the electron cloud. In general, atomic radius decreases across a period and increases down a group. Across a period, effective nuclear charge increases as electron shielding remains constant.
Explanation:
What is the average atomic mass of strontium
The answer is 87.62 u
Answer:
Atomic number: 38
Electrons per shell: 2,8,18,8,2
Symbol: Sr
A gas occupies 200ml at a temperature of 26 degrees Celsius and 76mmHg pressure. Find the volume at -3degree Celsius with the pressure remaining constant.
Answer:
184.62 ml
Explanation:
Let [tex]p_1, v_1,[/tex] and [tex]T_1[/tex] be the initial and [tex]p_2, v_2,[/tex] and [tex]T_2[/tex] be the final pressure, volume, and temperature of the gas respectively.
Given that the pressure remains constant, so
[tex]p_1=p_2[/tex] ...(i)
[tex]v_1[/tex] = 200 ml
[tex]T_1= 26 ^{\circ}C = 273+26 =299[/tex] K
[tex]T_2= 3 ^{\circ}C = 273+3 =276[/tex] K
From the ideal gas equation, pv=mRT
Where p is the pressure, v is the volume, T is the temperature in Kelvin, m is the mass of air in kg, R is the specific gas constant.
For the initial condition,
[tex]p_1v_1=mRT_1 \\\\mR= \frac{p_1v_1}{T_1}\cdots(ii)[/tex]
For the final condition,
[tex]p_2v_2=mRT_2 \\\\mR= \frac{p_2v_2}{T_2}\cdots(iii)[/tex]
Equating equation (i), and (ii)
[tex]\frac{p_1v_1}{T_1}=\frac{p_2v_2}{T_2}[/tex]
[tex]\frac{v_1}{T_1}=\frac{v_2}{T_2}[/tex] [from equation (i)]
[tex]v_2=\frac{T_2}{T_1} \times v_1[/tex]
Putting all the given values, we have
[tex]v_2=\frac{276}{299} \times 200 = 184.62 \; ml[/tex]
Hence, the volume of the gas at 3 degrees Celsius is 184.62 ml.
Can someone please help me with this?-- 18 pts!
What is true about the latent heat of condensation for a substance?
Select all that apply.
The latent heat of condensation will have the same absolute value as the latent heat of vaporization.
The latent heat of condensation will have the same absolute value as the latent heat of solidification.
The latent heat of condensation is a characteristic property that can be used to identify a substance.
The latent heat of condensation will be negative.
The latent heat of condensation is the same for all substances under the same conditions.
The latent heat of condensation will be positive.
Happy Holidays!!
Answer:
latent heat of condensation will have the same absolute value as the latent heat of vaporization. The latent heat of condensation will be negative. The latent heat of condensation is a characteristic property that can be used to identify a substance.
Explanation:
Answer:
energy absorbed or released by a substance during a change in its physical state (phase) that occurs without changing its temperature.
Explanation:
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Using the diagram below and the labels attached to it answer the following:
Transverse Wave Anatomy
1. Define the crest and trough of a wave and identify TWO points that represents a crest or a trough.
2. Define wavelength and identify TWO points that could be used in the diagram to measure it.
2. Determine the frequency of this wave if the waves the diagram represents occurred within 1 second.
Answer & Explanation:
Crest is a point in the cycle where maximum or peak amplitude exists. In another way, it is a point on the positive side of a wave where maximum amplitude exits. Trough is a point in the cycle where minimum amplitude exists.
Crest: points A and E
Trough: points C and J
Wavelength is the distance between two crests or two troughs. One example is distance between points A and E.
Frequency is 3 because there are 3 oscillations in 1 second (follow the line from beginning to point D, then D to G, the G to end).
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and brainliest if it is an option
Which laboratory activity involves a chemical change?
Answer:
It is the first one.
Explanation:
Because yeah.
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Answer:
Preach!
Explanation:
From the formula, write the correct name for the ionic compound. MgBr₂ KCl Al₂S₃ BeCl₂ MgCl₂ GaN CaO BaO AgBr 10. NaF SrS LiCl AlP CsI
Explanation:
For binary ionic compound, the compound is named by first writing the cation followed by the anion. The names of the compounds are;
MgBr₂ - Magnesium Bromide
KCl - Potassium Chloride
Al₂S₃ - Aluminium Sulphide
BeCl₂ - Berylium Chlride
MgCl₂ - Magnesium Chloride
GaN - Gallium Nitride
CaO - Calcium Oxide
BaO - Barium Oxide
AgBr - Silver Bromide
NaF - Sodium Flouride
SrS - Strontium Sulphide
LiCl - Lithium Chloride
AlP - Aluminium Phosphide
CsI - Caesium Iodide
One atom of element A bonds with element E.
Answer:
Ae4
Explanation:
which virtually showed the reaction between group 4 element and group 7 element
5. Which part makes up most of our blood vessels?
O a capillaries
Ob veins
O carteries
d. blood
Answer: a capillaries
Explanation:
The temperature of 25 g of water was raised from 10 oC to 60 oC. How many joules of heat was necessary to accomplish this?
Answer:
Hope this helps!
Explanation:
