Answer:
Strontium
Explanation:
If you look at the periodic table, you can see that strontium and calcium are in the same column. This means that they will have the same charge. Since they have the same charge, they will react the same way with chlorine.
Write the word equations for the following balanced chemical equations.
a. Zn + 2HCl → ZnCl2 + H2
b. 2503 2502 + O2
Answer:
21
Explanation:9+10
NEED HELP BY 1:30 PLZ EXTRA POINTS !!
Answer:
1. Solid Definition: firm and stable in shape; not liquid or fluid.
Example: A hard kitchen countertop.
2. Crystalline Solid Definition: Crystalline solids consist of atoms, ions and molecules arranged in definite and repeating three-dimensional patterns in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
Example: Salt, diamonds
3. Amorphous Solid Definition: an amorphous or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal.
Example: rubber, plastic, and gels
4. Liquid Definition: A liquid is a nearly incompressible fluid that conforms to the shape of its container but retains a constant volume independent of pressure. As such, it is one of the four fundamental states of matter, and is the only state with a definite volume but no fixed shape.
Example: Water, juice, rain
5. Surface Tension Definition: the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid, which tends to minimize surface area.
Example: Walking on water: Small insects such as the water strider can walk on water because their weight is not enough to penetrate the surface.
Explanation:
you're welcome, brainliest please (:
will give brainlliest
Which noble gas is closest to sulfur, S, on the periodic table? What has to happen for a sulfur atom in order to have an electron arrangement similar to the nearest noble gas?
Answer: argon
What must happen to a sulfur atom in order for it to have an electron arrangement similar to that of a noble gas? Answer: The noble gas closest to sulfur is argon. A sulfur atom gains two electrons to have an electron arrangement similar to that of argon.
Explanation:
8. Describe how crystals of copper sulphate are prepared.
Answer:
Take a cupful of water in a beaker and add a few drops of dilute sulphuric acid. Heat the water. When it starts boiling, add copper sulphate powder slowly while stirring continuously. ... Crystals of copper sulphate will be seen at the bottom of the beaker.
Hope it helps
You are stranded in Capitola Village without a ride home or a Jump bike.
You decide to walk home which is a distance of 32 blocks. How many
minutes will the trip take if you can walk one mile in 20 minutes? Assume
that 9 blocks in SC equals one mile. Show all of your handwritten work and
unit cancelations and upload a picture of your work.
Answer:
The answer is 3and 5/9 multiplied by 20 which is about one hour and 14 ,inutes
Explanation:
Technetium-104 has a half-life of 18.0 minutes. How much of a 165.0 g sample remains after 126 minutes?
Answer:
1.28g
Explanation:
honestly just put it a half life caculator i couldnt tell you how to do it if my life depended on it ♂️
How many grams are in 2.75 moles of Calcium
Answer:
110.21 g/mol
............................
Answer:
110.22 g in 2.75 moles of calcium
Explanation:
to convert moles to grams
moles (g/mol)
2.75 mol Ca (40.08 (atomic weight) g Ca/1 mol Ca)= 110.22
whats the mass number for titanium if it has 27 neutrons?
Answer: 49
Explanation: Mass number is protons + neutrons. So that would be 22 + 27 which gives you 49
How are mineral characteristics different from mineral properties?
Answer:
The physical properties of minerals are related to their chemical composition and bonding. Some characteristics, such as a mineral's hardness, are more useful for mineral identification.
Explanation:
Answer:
Explanation:
mineral properties are what it is made if the characteristics are what it looks like. Like is it shiny, hard, smooth. those are characteristics.
If the density of a substance is 2.18 g/mL, how would you find the density given that the mass is 0.987 kg and the volume is 4.52 x 102 mL?
Answer:
Explanation:
Convert mass in gms .. 987 gms
Density = mass/ volume
= 987/4.52 x102
= 2.18 g/mL
What is the kinetic energy of a 100 kg bear running at 3 m/s
Answer:
The answer is 450 JExplanation:
The kinetic energy of a body can be found by using the formula
[tex]KE = \frac{1}{2} m {v}^{2} \\ [/tex]
where
m is the mass
v is the velocity
From the question
m = 100 kg
v = 3 m/s
We have
[tex]KE = \frac{1}{2} \times 100 \times {3}^{2} \\ = 50 \times 9[/tex]
We have the final answer as
450 JHope this helps you
How does density affect the water cycle
Explanation:
Biological in the ocean is affected by the water cycle via the Mixed Layer Depth and Run off from land. Salinity and temperature determine the density of ocean water, and density influences the circulation. E-P determines surface salinity of the ocean, which helps determine the stability of the water column.
N2+H2》NH3
is it balanced or unbalanced
Express the difference of 7.69 and 4.0 using the correct number of significant digits:
3.7
3.70
3.6
0
3.69
Answer:
3.7
Explanation:
Significant figures:
All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
Leading zeros are not consider as a significant figures. e.g. 0.007 in this number only one significant figure present which is 7.
Zero between non zero digits are consider significant such as 1004 consist of four significant figures.
The zeros at the right side such as 4500 are also significant. There are four significant figures are present.
When we add or subtract the values the number of significant figures after decimal in result must be equal to the given measurement having less number of decimal places.
When we multiply or divide the values the number of significant figures must be equal to the less number of significant figures in given value.
Now we will calculate the difference between 7.69 and 4.0.
7.69 - 4.0 = 3.69
In given values 4.0 have less number of decimal places thus result must have only one decimal places. So we would round the result.
3.7
What would happen to the rate of a reaction if the concentration of substrate was increased after the point of saturation?
a)The reaction rate would increase.
b)The reaction rate would decrease.
c)There would be no effect.
Answer:
there would be no effect
Explanation:
The liquid inside a cell is called?
Answer:
cytoplasm
Explanation:
cytoplasm carries the nutrients of the cell
A large marble is dropped in a graduated cylinder with 45 mL of water in it. The water level increased to 61 mL. What is the volume of the marble?
Answer:
The answer is 16 mLExplanation:
The volume of the marble can be found by using the formula
volume = final volume of water - initial volume of water
So we have
volume of marble = 61 - 45
We have the final answer as
16 mLHope this helps you
Answer:
16mL
Explanation
Can someone help me write chemical equations of what went wrong in the Chernobyl nucleur accident? Eg. graphite in the rods speeding up the reaction, graphite reacting with atomospheric oxygen to cause a second explosion, etc.
Answer:
It might be e=FCA
Explanation:
Which force is equal but opposite to the one shown?
O A. Air resistance applying a normal force on the horse
O B. The ground applying a force on the horse
C. Gravity applying a downward force on the horse
D. The horse applying an action force on the ground
PREVIOUS
Answer:
b
Explanation:
A carpenter uses sandpaper on a piece of wood. Before, the wood felt rough. After, the wood felt smooth. Did the friction between the hand and the wood increase or decrease after using the sandpaper? Describe what the sandpaper did to the wood to make it smoother.
Answer:
Friction between the hand and the wood decreased.
Explanation:
The texture of the wood went from rough → smooth! This means friction between the hand and the wood was notably decreased.
According to this prompt, the carpenter used sandpaper against the wood. Sandpaper just so happens to be a very abrasive substance. The sandpaper polished and leveled out the wood which wore all the jutting bits away.- overall, making it much smoother and more pleasant to touch!
Hope I was of assistance! Have a nice day and Spread the Love! <3
what is atomic mass
Answer:
the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.
Answer:
The atomic mass is the mass of an atom.
Explanation:
Which unit would you use to measure the mass of a student desk?
Answer:
b and then c
thanks for the brainly points
SiS is what type of mineral?
Intensive or Extensive?
The shipping cost of a book(depends on weight)
The number of pages in the first chapter.
The number of pages in a book.
The characterization of the following statements with respect to intensive or extensive is as follows:
The shipping cost of a book(depends on weight): Extensive.The number of pages in the first chapter: Intensive.The number of pages in a book: Intensive. What is Extensive?Extensive may be defined as terminology that illustrates any event or action which is extremely large and significantly found at the outer level of any referring details. For example, the shipping cost of a book (depends on weight) is mentioned outside the cover of the book.
Intensive may also be characterized as a scientific terminology that significantly deals with any object or details which is present inside the content. For example, the number of pages in a book is mentioned inside the book.
Therefore, the characterization of the following statements with respect to intensive or extensive is appropriately described above.
To learn more about Extensive and intensive, refer to the link:
https://brainly.com/question/17594097
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There are two types of physical changes and chemical reactions- endothermic and exothermic. On the diagram below, which picture (A or B) is endothermic and which picture (A or B) is exothermic? Be sure to explain your reasoning for both.
Answer:
it is b because its releases heat in to all directions and not b because it staying inside and not releasing anything :)
Explanation:
Answer:
In ice cube heat is taken in absorbed it's an endothermic reaction
In fire heat is given out it is an exothermic reaction
Explanation:
Wanna give you one advice
Exit of heat means exothermic and you can memorize it by
The first word of both word exit ;exo
Hope it helps you
A neutral atom of sulfur becomes an ion with a negative two charge by?
Answer:
The valence shell (the 3s and 3p sublevels) contains six electrons, but it needs eight to become stable. Think of the octet rule. Therefore a sulfur atom will gain two electrons to form the sulfide anion with a charge of 2− , with the symbol S2− .
which property of a sound wave is related to the pitch of the sound?
Answer:
Frequency
Explanation:
I do not see the options but I know the answer:
The frequency of a sound wave is what your ear understands as pitch. A higher frequency sound has a higher pitch, and a lower frequency sound has a lower pitch.
If you find my answer helpful
Pls consider marking my answer as Brainliest! It would mean a lot!
Answer:
frequency
Explanation:
vaild
which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect?
Answer:
Which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect? Energy of electrons depends on light's frequency, not intensity. A change in which property of light will have no effect on whether or not the photoelectric effect occurs?
Explanation:
what is biogas, biomass and biodigester
Answer:
Biogas is a type of biofuel that is naturally produced from the decomposition of organic waste. When organic matter, such as food scraps and animal waste, break down in an anaerobic environment (an environment absent of oxygen) they release a blend of gases, primarily methane and carbon dioxide.
Explanation:
Biomass is renewable organic material that comes from plants and animals. ... Biomass contains stored chemical energy from the sun. Plants produce biomass through photosynthesis. Biomass can be burned directly for heat or converted to renewable liquid and gaseous fuels through various processes.biodigester is like a mechanical stomach. It is fed with organic material, which is broken down (decomposed) by micro-organisms (bacteria) is an oxygen-free (anaerobic) environment to produce a renewable energy called biogas (methane and carbon dioxide) and other material that is mainly used as fertilizer.
Explanation:
Biogas is a type of biofuel that is naturally produced from the decomposition of organic waste.
Biomass is plant or animal material used for energy production, or in various industrial processes as raw substance for a range of products.
A Biodigester simply means a tank which digests organic material biologically. In this sense, the FilterPod is a biodigester. However, many people think of a biodigester as a tank which digests, anaerobically, without air, organic material and produces methane gas for cooking, lighting and heating ect.
Which of the following statements concerning the measured number 0.3030
is correct? *
a) Only one of the zeros in the number is significant
b) Rounded off to 2 significant figures the number becomes 0.30.
c) Expressed in scientific notation the number becomes 3.03 x 10-1.
O
d) more than one correct response
e) no correct response
der below
Please explain why your answer is correct and why the others are incorrect :)
Answer:
C
Explanation:
If you move the decimal to the left it transforms the expression into scientific notation.