Answers
Answer:
✔️Metalliod, Mass: 73
Explanation:
The unknown element that is represented in the Periodic table is Germanium (Ge). It is in Group 14(IVA) and Period 4 of the periodic table. It is a metalloid and a silvery-gray substance. It's properties are intermediate between metals and nonmetals. It has a mass of 73 and an atomic number of 32.
Related Questions
The number of electrons in the outermost shell of nitrogen atom
Answers
Answer:
5
Explanation:
What is the most common isotope of lithium?
Answers
electron configuration of silver
Answers
Answer:
[Kr] 4d10 5s1 or 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s1
You have a solution of water and pure ethanol. The boiling point of water is 100 degrees Celsius and the boiling point of pure ethanol is 78 degrees Celsius. A. What process would you would use to separate this solution? Describe, in detail, how this process works.
Answers
Answer:
Distillation
Explanation:
A solution of water and ethanol are miscible. Hence, they can only be separated by a process known as distillation. Distillation is the process in which two or more constituents in a mixture are separated based on there difference in boiling points. The mixture is subjected to high heat and the one with the least boiling point distills/evaporates out first followed by the next least boiling point.
From the explanation above, it can be deduced that ethanol (with boiling point of 78°) will be distilled out while water remains in the boiling tube or container.
Answer question number 3
Answers
Answer:
A
Explanation:
A mixture is formed when two or more substances are physically mixed together. A compound is formed when two or more substances are chemically combined through a chemical reaction.
how are sol, solution and suspension different from each other?
plzzzzzz answer asap
Answers
Answer:
a
Explanation:
A chemist measured a solution of 15.5 mL of a copper chloride
solution in water. This is an example of
data.
Answers
Answer:
solution
Explanation:
Calculate the heat that must be supplied to
a 532 , stainless steel vessel containing 375 g
of water to raise its temperature from 35 C
to the boiling point of water 100°C. Cs. =0.51 J/g. degrees C
Answer in units of J.
Answers
Q must be supplied = 119523.3~J
Further explanationThe law of conservation of energy can be applied to heat changes, i.e. the heat received/absorbed is the same as the heat released
Q in = Q out
Heat can be calculated using the formula:
Q = mc∆T
Q = heat, J
m = mass, g
c = specific heat, joules / g ° C
∆T = temperature difference, ° C / K
So from the question :
Q to the system(Q supplied) = Q water + Q steel vessel(Q gained)
[tex]\tt Q~supplied=m.c\Delta T(water)+m.c\Delta T(vessel)\\\\Q~supplied=375\times 4.18\times (100-35)+532\times 0.51(100-35)\\\\Q~supplied=101887.5+17635.8=119523.3~J[/tex]
Which element would be the least similar to magnesium (Mg)?
A) Na
B) Sr
C) Be
D) Ca
Answers
Answer:
NA
Explanation:
the other three options are alkali earth metals like magnesium (they are all in group 2). Sodium is the only one that is not an alkali earth metal.
The [tex]Na[/tex] element would be the least similar to magnesium ([tex]Mg[/tex] ).
Because all elements belongs to same group as magnesium except sodium.Why elements belong to same group are similar?The vertical row in the periodic table is called group.The elements in the same group shows similar properties because the number of valence electrons is same for elements in same group.What is valence electron?The electron/electrons present in valence shell is called valence electrons.
To learn more about periodic table,
https://brainly.com/question/11155928
#SPJ2
Answer question number 6
Answers
Two compounds of phosphorus and fluorine have the following
mass ratios.
Compound 1: 10.14 g fluorine for every 3.38 g phosphorus
Compound 2: 8.42 g fluorine for every 4.21 g phosphorus
Find the whole number ratio of masses of fluorine in compound
1 to compound 2.
Help me please
Answers
Answer: 3:2
Explanation: (10.14÷3.38)÷(8.42÷4.21)=1.5=3/2
Jamie rolls a 6-sided die 30 times and determines that the experimental probability of rolling a 2 is Start Fraction 1 over 15 End Fraction. The theoretical probability of rolling a 2 is Start Fraction 1 over 6 End Fraction. What could Jamie do to make his experimental results more closely match the theoretical probability?
Answers
Answer:
Conduct more trials
Explanation:
Theoretical Probability can be defined as what someone is expecting to happen
Experimental Probability on the other hand, is defined as what actually happens.
Probability is usually calculated in the same way for experimental probability and that of theoretical probability. You divide the total number of possible ways in which a particular outcome can happen, by the total number of outcomes itself.
In Experimental probability, the more times a probability is tried, it gets closer and even more closer to theoretical probability.
So, for the question, Jamie should improve the number of tries more, so as to get his experimental probability results to be closer to the theoretical probability result.
Answer:
A. He can increase the number of trials
Explanation:
What is the decomposition of 2LiCIO3
Answers
2LiClO3 —> 2LiCl + 3O2
A substance can change into a new kind of molecule when:
Answers
Answer:
Chemical changes cause a substance to change into an entire substance with a new chemical formula. Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the results are called products.
Hope it helps
round 2 significant figures. 5,239
Answers
Answer:
5200
Explanation:
Carbon is considered an element, while carbon dioxide is considered a compound. This is because carbon dioxide is
Answers
Answer: This is because carbone dioxyde is composed of more than just an atom of carbon , it’s composed of 2 atoms of oxygen and one atom of carbon .
* I hope it was helpful , good luck :) *
What is wrong with the answer, 10.5 x 10^3? Think about the proper form used to show a number in scientific notation.
Answers
Answer:
1.05 × 10^4.
Explanation:
The proper scientific notation will be
1.05 × 10^4.
ANSWER ASAP PLEASE!!
What determines how many of each ion is required for an ionic compounds?
please do not look up on google!!!!
Answers
Each ion has a single charge, one positive and one negative, so we need only one ion of each to balance the overall charge. When writing the ionic formula, we follow two additional conventions: (1) write the formula for the cation first and the formula for the anion next, but (2) do not write the charges on the ions.
How does oxygen get into the cell in order for cellular respiration to occur?
A.Diffusion
B.Exocytosis
C.Osmosis
D.Endocytosis
Answers
Answer:
A. Diffusion
Explanation:
A.Diffusion - this is correct. Diffusion is the process where small molecules enter the cell by moving from a high concentration to a low concentration through a semi-permeable membrane.
B.Exocytosis - this is incorrect. Exocytosis is a cell transport mechanism where the cell uses a system of vesicles to transport cargo outside of the cell. The vesicles fuse to the cell membrane and deliver the cargo outside.
C.Osmosis - this is incorrect, osmosis is a type of diffusion specific to water molecules
D.Endocytosis - this is incorrect. Endoocytosis is a cell transport mechanism where the cell uses a system of vesicles to transport cargo into the cell. The cell membrane engulfs the molecules and brings them into the cell via the vesicle
challenges we will face terraforming Mars
Answers
How many H2O particles are in 6 moles of water?
Answers
Answer:
Thus, for example, one mole of water contains 6.02214076×1023 molecules, whose total mass is about 18.015 grams – and the mean mass of one molecule of water is about 18.015 daltons.
Explanation:
Is this actually right
Answers
Answer:
what?????????i don't see a question
Answer:
Yes
Explanation:
After lab, all of Darrel's friends looked at his data and laughed and laughed. They told him that he was 30.8% too low in the boiling point he had just recorded. He had recorded a boiling point of 50o C on his data sheet. What is the correct boiling point of the liquid he was working with in lab?
Answers
Answer:
100°
Explanation:
For a boiling point is it always 100°
How is a substance’s solubility in another substance determined?
A. Add solvent till no more will dissolve
B. Add solvent stepwise till no more will dissolve
C. Add solute until no more will dissolve in a fixed amount of solvent
D. Cool the solvent
Answers
Answer:
b
Explanation:
now explanation because that is answer
Which of the following elements has the lowest electronegativity?
A. Barium
B. Magnesium
C. Strontium
D. Calcium
Answers
Answer:
A. Barium
Explanation:
hope this helps! :)
The first scale of electronegativity was developed by Linus Pauling and on his scale barium has a value of 0.89 on a scale running from from about 0.7 (an estimate for francium) to 2.20 (for hydrogen) to 3.98 (fluorine).
Which describes the elements in a given group of the periodic table?
They decrease in atomic mass as you go down the column.
They increase sequentially in atomic number from top to bottom.
They are in the same family, with similar characteristics.
Their properties change according to a pattern as you go down the column.
Answers
Answer:
They are in the same family, with similar characteristics.
Explanation:
The elements in a given group of the periodic table are in the same family and with similar characteristics.
Vertical columns on the periodic table are referred to as a group or family. Elements having the same number of electrons in the outermost shell of their atoms are placed one another in vertical columns. Each resulting vertical column is a group or family. Elements in the same group exhibit similar chemical properties because of the same number of electrons in their atoms' valence shells.Mr. Hackworth toasts a marshmallow over a fire. The outside of the marshmallow turns black, a new substance with new properties is created on the outside of the marshmallow, and the marshmallow gives off an odor. What type of change occured?
A
Physical, because color is a physical property.
B
Physical, because a new substance was created, smell, and color change.
C
Chemical, because a new substance was created, smell, and color change.
D
Chemical, because color is a chemical property.
Answers
Answer:
C
Explanation:
This is a chemical property because a catalyst is added(fire). Without a catalyst a marshmallow would stay a marshmallow. The sugar caramelizes(this is not physical because sugar is burning)
colonel flanders makes boxes of chicken with various numbers of pieces. He charges $ 0.40 for each piece of chicken, plus a fixed charge of $ 0.55 for the box, the rolls, etc. If Iddy Ottic bought the $6.95 box, how many piecesof chicken should the box contain?
Answers
Subtract 0.55 from 6.95 and you get 6.40
The divide 6.40 by 0.40 and you get 16
I need help again LOL.
Answers
Answer:
They require diffrent types of atoms for their makeup I belive is the answer Hope this helps
Explanation: Wow you have a lot a questions XD :D :3
Element: A substance that is made up of only one type of atom. Compound: A substance that is made up of more than one type of atom bonded together. Mixture: A combination of two or more elements or compounds which have not reacted to bond together; each part in the mixture retains its own properties.
i hope this helps
What does the “188” represent in Tantalum-188
A. mass number
B. atomic number
C. mass defect
Answers
Answer:
mass number
Explanation:
When there is an element name followed by a dash and then a number, the number simply represents the mass number.
for example:
Oxygen- 18
18 represents the mass number of this particular isotope