Explanation:
Rocks are formed from aggregates of minerals. There are three different types of rocks and they are formed by different processes. Igneous rocks are formed by the cooling and solidification of magma within or on the earth crust. Sedimentary rocks are formed from pre-existing rocks by the lithification of sediments brought into a basin of deposition. Metamorphic rocks are changed rocks that have been mineralogically altered.
Different rocks form under specific conditions and environment. But rocks are connected to one another through the rock cycle. The rock cycle shows that rocks can transition from one form to another.pls asap figure it out pls I will mark brainliest
Answer:
NaCl (Na is a metal and Cl is a nonmetal) MgO (Mg is a metal and O is a nonmetal) Al2O3, NaF, Na2O
Explanation:
You have to have a metal and a non metal together for it to be ionic
PLEASE HELP ASAP!!!
A teacher wrote the following part of a chemical equation involving water (H2O) and carbon dioxide (CO2): H2O + CO2 ---> ?
What is the most likely result of the chemical reaction represented by this equation?
A. H2CO3
B. NaCl
C. HNO3
D. H2Ca3
Answer:
Id say A. I think I hope I'm right
can someone pls help me im tryna get this done tysm brailiest for free
Answer:
geothite
Explanation:
i did a test on this a few months ago
Answer:
sphalerite i think
Explanation:
8. __H2 + __O2-> __H2O
9. __K2SO4 + __H2-> __H2SO4 + __K
10. __NO2 + __H2O-> __HNO3 + __NO
The picture provided shows the arrangement of electrons in atomic shells around the nucleus of four different elements.
Which statement is true about these elements?
A) All elements belong to the same period.
B) All elements belong to the same group.
C) Elements 1 and 4 belong to the same group.
D) Elements 2 and 3 belong to the same period.
Both element 1 and element 4 have one electron in their valence shell Therefore, they belong to the same group. Therefore, option (C) is correct.
Why do elements of the same group have similar chemical behavior?The chemical behavior of elements will depend on the number of electrons in their outermost shell. Elements that are placed in the same group have the same number of valence electrons. Therefore, elements present in the same group of the modern periodic table have similar chemical properties.
The elements with a similar outer shell electronic configuration in their atoms are organized in the same group of the modern periodic table. These valence electrons of an element are responsible their chemical properties and reactivities of the elements.
Elements 1 and 4 have one electron in their valence shell so they belong to the same group while elements 2 and 4 have two electrons in their valence shell that also belong to the same group.
Learn more about elements with similar chemical behavior, here:
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(60 points + brain list) The correct electron configuration of the O2-ion is
A)
2-4
B)
2-5
C)
2-7
D)
2-8
If you discover a new element, how would you know where it should go on the periodic table
Answer:
the atomic number
Explanation:
it would be in the upper corner
I’m learning about heredity
1. How can environment influencers inherited traits
2. How many chromosomes do humans have? Explain where these chromosomes come from.
Answer:
1. (See explanation)
2. 46. 23 from the mother’s egg and 23 from the father’s sperm.
Explanation:
ok for number one I am not entirely sure, but I am pretty sure that light, chemicals and temperature can all affect which genes get turned on and off. I am not entirely sure if the question is asking about the environment influencing inherited traits in the form of natural selection tho? If that is something you’re seeing right now, it might be a possible answer. But honestly I am not completely sure.
The process of pumping oxygen-rich blood out of your heart into the rest of your body is _______.
A. picks up nutrients, water, and waste materials
B. pulmonary circulation
C. the lungs, where it picks up oxygen again
D. capillaries
E. 5
F. systemic circulation
Answer:
its A
Explanation:
Answer:
Pulmonary circulation.
Explanation:
The question is asking you to identify a process. The process is pulmonary circulation. While your blood certainly transports nutrients, water, and waste materials, that answer simply does not match the structure of the question.
If the gas tap to the Bunsen burner is turned on, the methane does not start burning until it is lit with a match. Why is heat from the match needed to start the methane burning?
Answer:
The reaction has a high activation energy
Explanation:
The burning of methane is a spontaneous reaction. Once the burning begins, the flame is able to sustain itself without any additional input of energy. It is an exothermic reaction in which energy is given out in the form of heat.
The reason why heat from the match is needed to start the burning of methane is that the activation energy of the combustion of methane is high. Activation energy is the energy that must be supplied in order for the collision of reactants to result in chemical reaction.
As long as the activation energy is high, the reaction can not occur without an external input of energy (e.g striking a match). Hence the answer.
Hi guys . I'm having some troubles with physics and chemistry .
Do you know any sites or apps that can help me with any topic in physics and chemistry ( apart from Khan academy ) ?
Note : The site or app has to be able to teach and explain topics in Physics and Chemistry .
Explanation:
byju's ig. Cause it gives a proper concept
I have no idea what the answer is
ill guess c
Explanation:
g
We add 5.0 g of sugar to 100 mL of water.
What is the mass of the solution?
The mass of the solution : 105 g
Further explanationGiven
5 g sugar
100 ml water
Required
The mass of the solution
Solution
Density is a quantity derived from the mass and volume
Density is the ratio of mass per unit volume
Density formula:
[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]
ρ = density
m = mass
v = volume
Density of water = 1 g/ml
So mass of water :
= density x volume
= 1 g/ml x 100 ml
= 100 g
So total mass of solution :
=mass sugar+mass water
= 5 g + 100 g
= 105 g
Where did you walk? what did you find most enjoyable while walking: listening to music, listening to an audio book, or nothing? how did your body react to this introductory amount of exercise? was it more exercise or less exercise than you are used to? if you did not walk, what other type of physical movement did you do?
Answer: walked from school few blocks before arriving .found charting and laughing with my pals most enjoyable while I was walking .my body reacted by tiredness, it is less exercise than I am capable of doing.
Explanation: did that help?
Emilio wants to tell a friend where an element's name is located within it's box in the periodic table. Which of the following is an accurate explanation to find an element's name?
the name is at the top of the box
the name is the large letter or letter combination in the box
the name is the word below the large letter combination in the box
the name is the last piece of information in the box
Answer:
A
Explanation:
hope this helps!
The name is the word below the large letter combination in the box
If you've got 3.011 X 10 ^ 24 atoms of Boron (B), how many grams do you have?
a
5.0 grams
b
54.055 grams
c
16.7 grams
d
1.82 grams
An object has a density of 40 g/cm3 and a mass of 240 g what is it’s volume
Answer:
6cm^3
Explanation:
240/40=6
6 cm^3
How many grams of potassium phosphate (K3PO4) will be formed if you react 20.16 grams of potassium hydroxide (KOH) with excess phosphoric acid?
3 KOH + H3PO4 → K3PO4 + 3 H2O
_ grams of K3PO4 (round to 3 sig figs)
a) 234
b) 25.4
c) 64.5
d) 58.7
25.4g of potassium phosphate (K3PO4) are formed.
What is potassium phosphate?Potassium phosphate is an inorganic salts of potassium and phosphate.
How to convert mole to grams?Calculate the number of moles mentioned in the questionFind the molar mass of the substance.Multiply both the values.3 KOH + H3PO4 → K3PO4 + 3 H2O
Step 1: Convert from grams to moles using the molar mass.
Step 2: Use the molar ratio to determine moles of other substance.
Step 3: Convert from mole to grams using the molar mass.
Convert grams to moles using the molar mass
25.4g KOH (1 mol KOH/56.098g KOH)
= 0.3593mol KOH
Mass of H3PO4 produced
0.3593 mol KOH ( 1 mol H3PO4/3 mol KOH)
= 0.1197 mol H3PO4
converting mole to grams
0.1197 mol H3PO4 (98g H3PO4/1 mol H3PO4)
= 11.730g H3PO4
Mass of K3PO4 produced
0.3593 mol KOH (1 mol K3PO4/3 mol KOH)
= 0.1197 mol K3PO4
converting mole to grams
0.1197 mol K3PO4 (212.267g K3PO4/1 MOL K3PO4)
= 25.408g K3PO4
Hence, option b is the correct answer.
To learn more about mole to gram conversion here
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A scientist has 207.45g of H2O in a beaker. How many water molecules are in the beaker?
Answer:
6.94 x 10²⁴molecules
Explanation:
Given parameters:
Mass of water = 207.45g
Unknown:
Number of molecules = ?
Solution:
To solve this problem, we must understand:
1 mole of a substance contains 6.02 x 10²³ molecules
Now, first find the number of moles of water;
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Molar mass of water = 2(1) + 16 = 18g/mol
Number of moles = [tex]\frac{207.45}{18}[/tex] = 11.53moles
So;
1 mole of a substance contains 6.02 x 10²³ molecules
11.53moles of carbon dioxide will contain 11.53 x 6.02 x 10²³
= 6.94 x 10²⁴molecules
The electron configuration of an element is 1522s22p63523p6451. Why is this a REPRESENTATIVE element?
A)
All orbitals are completely filled.
B)
The outermost electron is a valence electron.
The outermost electron is added to the p-orbital.
D
The highest s-orbital or p-orbital is partially filled.
Describe how the composition of the upper mantle is different from the lower mantle?
a. The upper mantle is made of solid rocks and lower mantle is made of melted rocks and minerals
b. The upper mantle is made of melted rocks and minerals and lower mantle is made of solid rocks
c.The upper mantle is made of lava and the lower mantle is made of magma
Answer:
b
Explanation:
Answer:
it is B hope I helped
=
Explanation:
You push 100kg door with force of 200 with what force does the door push back on you
Answer:
for every action there is equal and oposite reaction so door als pushes us back with same force. ie;200N.
How many grams are in 2.0 moles of iron(III) carbonate?
Explanation:
1 mole is equal to 1 moles Iron(III) or 832.29538 grams, so 2 moles Iron(III) = 1664.59076 grams
3. The air today is approximately one-fifth
oxygen. Calculate the approximate volume of
oxygen in 200cm3 of air.
Answer: 40cm^3
Explanation:
Since the The air today is approximately one-fifth oxygen, the approximate volume of oxygen in 200cm3 of air would be:
= 1/5 × 200
= 40cm
The answer is 40cm^3
cells use oxygen to release energy during blank
Answer:
Cellular respiration
Answer:
cellular respiration
Explanation:
PLEASE HELPPP!!!!!! ASAP!!!!
Which of the following best describes cations? Question 19 options: A) They're negatively charged because they lost an electron. B) They're positively charged because they gained an electron. C) They're positively charged because the number of electrons remained the same. D) They're positively charged because they lost an electron.
Answer:D
Explanation:trust me bro
Answer:
D
Explanation: I took the test
The compound has the empirical formula of CH. Give some possible molecular formulas for this compound if you didn't know the molar mass.
Answer:
Convert the mass of each element to moles using the molar mass from the periodic table. Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number. This is the mole ratio of the elements and is represented by subscripts in the empirical formula.
Explanation:
The result is the molecular formula
Please actually help me.
Thank you!
Answer: I believe -3
Explanation:
1.
Many plants can reproduce asexually. How is this an advantage for the plant? Why can it sometimes be a disadvantage
for the plant? Use details to support your answer.
Answer:
Advantage and disadvantage of asexual reproduction in plant is described below in details.
Explanation:
An advantage of asexual reproduction is that the resulting plant will approach adulthood quicker. Since the new plant is emerging from a grown-up plant or plant components, it will also be stronger than a seed. Asexual reproduction can take a spot by natural or manufactured (assisted by humans) means.
The significant disadvantages of asexual reproduction are the Shortage of diversity. Following the seeds are genetically the same as the parent they are more sensitive to the same diseases and nutrient insufficiencies as the parent. All the negative deviations endure for generations.
27/13AL+? ->> 24/11NA+4/2HE
Answer:
hhhsstyi chick to yay to today do y'all
Answer:
¹₀n
Explanation:
The given expression is:
²⁷₁₃Al + ₐᵇT → ²⁴₁₁Na + ⁴₂He
This expression is typical of nuclear reactions. To balance this expression we must conserved the mass number and the atomic number.
The mass number is the superscripts and the atomic number is the subscript;
Now;
conserving mass number:
27 + b = 24 + 4
27 + b = 28
b = 28 - 27 = 1
conserving the atomic number;
13 + a = 11 + 2
13 + a = 13
a = 0
So;
The particle T is a neutron ¹₀n
