Answers
Answer:
Females
Explanation:
Hope that helps
Answer:
The answer may be no characters
If I'm right or wrong plz reply to me
Related Questions
Please help me no links
if good answer you get brainliest
Answers
Answer:
plutonic rocks are formed when magma cools and solidifies underground This shows us if the rock is plutonic or volcanic. When magma cools underground, it cools super slow and when lava cools above ground, it cools faster. When magma and lava cool, mineral crystals start to form in the molten rock.
Explanation:
i hope this is correct
Two chemical reactions are shown:
A. Ca(OH)2 - CaO + H2O
B. 4K + O2 + 2K20
Which statement is true?
A. Both are synthesis reactions
B. Both are decomposition reactions
C. A is a synthesis reaction, and B is a decomposition reaction
D. A is a decomposition reaction, and B is a synthesis reaction
Answers
Answer: A is a decomposition reaction, and B is a synthesis reaction
Explanation: the first equation shows the reactant breaking up into 2 parts aka decomposition and equation 2 shows the reaction being combined into one part, aka synthesis. hope that helps!
Answer:
Answer d
Explanation:
C2H4NH Lewis structure
Answers
What is the agent that causes frost wedging?
Answers
Answer:
Freeze wedging is caused by the repeated freeze-thaw. Frost wedging occurs as the result of 9% expansion of water when it is converted to ice. Cracks filled with water are forced further apart when it freezes.
Does chlorine have a smaller ionic radius than soium.
Answers
Answer:
sodium atoms are much larger than chlorine atoms but in case of sodium ions they are much smaller thqn chlorine ions
2. How many of valence electrons do the elements in column 4 have? Are these elements very reactive?
Explain your answer.
Answers
Answer:
4
Explanation:
Elements in group 14 have 4 valence electrons. Meaning that to achieve a stable octet they need to either gain or lose 4 electrons in total.
1. Why fractional distillation has
fractionating column but not in simple
distillation?
Answers
Answer:
fractional distillation leads to better separation
What is the oxidation half-reaction for 2Mg + O2 + 2Mgo?
A. O2 + 4e + 202-
B. 202- → 02 + 4e
C. Mg2+ + 2e → Mg
O D. Mg → Mg2+ + 2e
Answers
Answer:
OPTION C is correct
When magnesium burns, it combines with oxygen (O2) from the air to form magnesium oxide (MgO) according to the following equation: 2Mg(s) + O2(g) → 2MgO(s) Magnesium oxide is an ionic compound containing Mg2+ and O2− ions whereas Mg(s) and O2(g) are elements with no charges.
How many total atoms are given in the compound 5ZnSO4?
Answers
Answer: 6 total atoms
Explanation:
Which product in the reaction forms a precipitate? PbSO4 MgCl2 PbMg no precipitate formed
Answers
MgCl2 product in the reaction forms a precipitate because it is solid an insoluble salt and not dissolve in solution and precipitate on the bottom surface of the solution.
What is precipitation reaction?The chemical reaction in which two ionic bond combine to form an insoluble salt in a aqueous solution is called precipitation reaction.
To learn more about precipitation reaction here.
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HURRY for a BRAINLIST
Answers
Answer:
B
Explanation:
Answer:
answers
B
Explanation:
Explicaciónexplicacaca
witch one is a gas metal or ion-----sodium, potassium, hydrogen, lithium
Answers
Answer: Lithium, sodium and potassium are in the same group, alkali metals or Group 1A, because the Periodic Table is arranged according to the Periodic Law which states that chemical properties repeat at regular intervals.
Explanation: hope it helps :)
Complete the sentence.
Atoms form chemical bonds to satisfy the ______
rule and to become _______
Answers
una pieza de hierro de 25cm3 tiene una masa de 195g cual es su densidad?
Answers
Answer:
Pretend you are a TV producer. Think of ideas for new TV shows. Your objective is to create ideas that will be successful, regardless of whether this is quality programming or not. Think of an idea of a copy. Explain the basics of what this show will be like and what show it is copying. Explain why you feel this show will be popular. Think of an idea of a spin-off. Explain the basics of what this show will be like and what show it is spinning off from. Explain why you feel this show will be popular. Think of an idea for a TV show that falls into one of the genre categories listed in the genre chart. Describe the basics of the show and how it falls under the genre’s expectations for characters, plots, and aesthetics. Explain why you feel this show will be popular.
Explain why photosynthesis is essential for living plants and animals.
Answers
5) When rain falls to the earth, it just doesn't sit there. Instead, the rain water starts moving. Some of the precipitation seeps into the ground to replenishing groundwater. However, most of
it flows downhill as runoff. Runoff is important in filling rivers and lakes, but it also changes the landscape by erosion and can be a powerful mover. Flowing water is a powerful force,
capable of moving boulders and carving out canyons. Runoff has an impact on streams and rivers, but it also has an impact on the ocean system. What can you infer about the impact of
runoff on Ocean life? Choose ALL that apply.
A) Runoff drops a lot of sediment in the ocean, decreasing salinity.
B) Runoff builds up the coastline, depositing sediment, disrupting habitats of marine wildlife.
Runoff can lead to overgrowth of algae that can cause oxygen deprivation and create a dead zone.
D) Runoff carries pollutants into the ocean, causing illness and death of vulnerable marine populations.
) Runoff can carry bacteria, viruses and other pathogens from pet and livestock waste that can harm shellfish and other marine organisms.
Answers
Answer: Rain evaporates and this same process happens over and over again.
Explanation:
Help me please, I don't get it. Please & thank you, xoxo !
Answers
Sorry I accidentally touched it
For accurate answer i will mark you a brainlist:D
How will you convert 85 cm to 85 m, choose one of the following option:
( Remember there is a decimal in 85 after 5)
Question 12 options:
Move the decimal in 85 TWO places to the right to decrease the value.
Move the decimal in 85 THREE places to the right to increase the value.
Move the decimal in 85 TWO places to the Left to decrease the value.
Move the decimal in 85 THREE places to the Left to decrease the value.
Answers
Answer:
welp it would be this option : Move the decimal in 85 TWO places to the right to decrease the value.
Explanation:
Answer:
Option A
Explanation:
Moving the decimal point 2 places to the right will give you 8500 cm=85m
4. If the speed of an object increases, its kinetic energy
stays the same
decreases
increases
Answers
Answer:
I think the answer is increases
assume you are performing the calibration step of experiment 8 and you begin with 80 g of water at 20 oc and 80 g of water at 80 oc. after adding the two portions of water into your calorimeter setup and following the procedure outlined in the experiment, you determine the temperature of the mixed portions of water to be 45 oc. what is the heat capacity of the calorimeter?
Answers
The heat capacity of the calorimeter is 133.76 J°/C.
A calorimeter is an apparatus employed when estimating the amount of heat required in a chemical reaction.
For the given calorimetric function:
the heat lost by the hot water = to the heat gained by the cold water and the calorimeter.These can be computed mathematically as:
[tex]\mathbf{m_wC_w\Delta \theta _w = m_cC_c\Delta \theta _c + C_{cal} \Delta_c}[/tex]
[tex]\mathbf{80 \ g\times 4.18 J/g^0 C \times (80-45)^0 \ C = 80 g \times 4.18\ J/g^0 \ \times (45- 20)^0 +C_{cal} \times (45- 20)^0 \ C}[/tex]
[tex]\mathbf{11704 \ J =8360 \ J+C_{cal} \times (25)^0 \ C}[/tex]
[tex]\mathbf{(11704 -8360) \ J= C_{cal} \times (25)^0 \ C}[/tex]
[tex]\mathbf{ C_{cal} = \dfrac{3344 \ J} { (25)^0 \ C}}[/tex]
[tex]\mathbf{ C_{cal} =133.76 \ J/^0 C}[/tex]
Therefore, the heat capacity of the calorimeter is 133.76 J°/C.
Learn more about calorimeter here:
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If each mole contains 6.023 x 10^23 atoms of magnesium. How many magnesium atoms reacted in your reaction? 400 mg of Magnesium were used.
Answers
Answer:
0.1× Avogadro's numbers
10×10^22
Explanation:
convert given mass to moles
then multiply by Avogadro's number
the atomic number of RE is 75. the atomic mass of one of its isotopes is 186. how many neutrons are in an atom of this isotopes
Answers
Answer:
111
Explanation:
Answer:
I believe Rhenium has 111 neutrons in the atoms isotopes.
Explanation:
What is the wave length of an electromagnetic radiation ,having a frequency of 5.2 x 10^12 Hz? Note: c= 3.00 x 10^8 m/s
Answers
Answer:
[tex] \huge{5.77 \times {10}^{ - 5} m}[/tex]
Explanation:
The wavelength of a wave can be found by using the formula
[tex]\lambda = \frac{c}{f} \\[/tex]
where
c is the speed of the wave
f is the frequency
From the question we have
[tex] \lambda = \frac{3 \times {10}^{8} }{5.2 \times {10}^{ 12} } \\ \\ \\ \\ \large{ = 5.77 \times {10}^{ - 5} m}[/tex]
Hope this helps you
what happened if you poured lava on snow
Answers
Answer:
This is what could happen:
Explanation:
When lava meets ice, the resulting mess can cause flooding, destroy valuable resources and even produce explosions.
Answer: When lava meets ice, it neither explodes nor tunnels through; rather, it forms strange-looking bubbles.
Explanation:
If a 435.767 g sample of bottled water contains 2.797 x 10-3 g of lead, what is the concentration of lead in the bottled water, in units of parts per million (ppm)
Answers
Answer:6.42 ppm
Explanation:ppm = (g soluto/g soluzione) ×1000000
Calculate the molecular mass of the element
They give:H=1,AI=27,S=32,0=16,Cu=64,P=31,Mg=24,N=14,Na=23
Answers
Answer:
Mg (NO3)2
24 + 2×(14+ 3×16)
24+2×(14+48)
24+2×(62)
24+ 124
=148g
Compared to the energy of an electron in the second shell of an atom of sulfur, the energy of an electron in the
1
first shell is lower
2
first shell is the same.
3
third shell is lower
4
third shell is the same.
Answers
Answer:
First shell is lower
Explanation:
The electron has to absorb energy to excite and go to higher energy levels/ shells and should release energy to go to lower energy levels/ shells. This means higher the shell , more energy is required and vice versa
Distinguish between the first, second, and third ionization energies of an atom. b. How do the values of successive ionization energies compare
Answers
Answer:
The third ionization energy is the energy it takes to remove an electron from a 2+ ion. (That means that the atom has already lost two electrons, you are now removing the third.) And 2nd ionization energy is higher than 1st ionization energy, 3rd is higher than 2nd, and so forth.
hope it is helpful :)
Explain how magnesium is produced at the negative electrode from molten magnesium chloride
Answers
Answer:
being cation it migerates to cathode to be reduced to elemental magnesium
Explanation:
Mg+2. +2e -----------Mg
which professional most likely uses x-ray technology a financial analyst or a dentist
Answers
Answer:
A dentist
Explanation:
Hope this helps
