Answer:
They can be installed underground.
Explanation:
Keeps the reactor coolant water under high pressure to prevent it from boiling.
If a sodium ion has 11 protons, 12 neutrons, and 11 electrons, what is the atomic mass of the atom?
Answer:
23
Explanation:
we do not care about electrons, so 11 + 12 = 23
Which of the following groups of elements has two valence electrons and is highly reactive?
Select one:
a. Alkali metals
b. Alkaline-earth metals
c. Halogens
d. Noble gases
EZ MODE -_- What could you do in an experiment to get more accurate results? Change two of your variables. Only make observations that involve sight. Only use new materials. Perform repeated trials
Answer:
they change the object hehehehe
Answer:
D. Perform repeated trials.
Explanation:
I did the exam and got it correct :D!
Where must you be standing if the Sun appears to be directly overhead at noon?
O A. At the South Pole
O B. At the North Pole
O C. At a point somewhere along the prime meridian
O D. At a point somewhere along the equator
Answer:
D
Explanation:
at a point somewhere along the equator
In the case when the Sun appears to be directly overhead at noon should be along with the equator.
What is the equator?It is considered to be the imaginary line that should be arounded with the middle of the planet or the celestial body. It is halfway that lies between the North Pole and the South Pole, at 0 degrees latitude. In the equator, it divides the planet into a Northern Hemisphere and a Southern Hemisphere
Therefore, based on the above explanation, the option d is correct.
Learn more about sun here: https://brainly.com/question/20827000
What voltage will produce 3 A through a circuit that has 15
ohms of resistance?
Answer:
5 ohms of resistance
Explanation:
15/3=5
Please explain thank you! Xoxo!
For the elements in the "f-block," how is the row number related to the principal energy level for the last orbital notation of their electron configurations?"
Answer:
See explanation
Explanation:
Given that the row number is the same as the period or energy level(shell) in which the electron is found.
If we designate this row number as "n", we know that the highest principal energy level for the f orbitals is obtained as (n-2) f.
Thus, we obtain the highest principal energy levels for the "f block" elements by subtracting 2 from the row number.
Given the following information:
Heat of sublimation of Li(s) = 166 kJ/mol
Bond energy of HCl = 427 kJ/mol
Ionization energy of Li(g) = 520. kJ/mol
Electron affinity of Cl(g) = -2349 kJ/mol
Lattice energy of LiCl(s) = -2829 kJ/mol
Bond energy of H₂ = -432 kJ/mol
Calculate the net change in energy for the following reaction:
2Li(s) + 2HCl(g) --> 2LiCl(s) + H₂(g)
Answer:
Ya'll should really practice more because things like these are easy
Explanation:
You guys need to practice more since stuff like this are pretty simple.
What is net change?According to the net change theorem, the ultimate value of a quantity equals the beginning value plus the integral of the rate of change when a quantity changes. The net change can be positive, negative, or zero.The term "Net Change in Cash" indicates how much Cash and Cash Equivalents changed in value during the reporting period. It is the main punchline of the Cash Flow Statement. Net Cash Change quantifies how much the value of Cash and Cash Equivalents changed during the reporting period. The main punchline on the Cash Flow Statement is this. When using net cash as a barometer to determine a company's financial health, it is critical to analyse what activities contribute to positive or negative net cash.To learn more about net change refer to:
https://brainly.com/question/28716897
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What does bananas batteries and people have in common
please help me I will give brainesty if your right
Answer:
Sunlight
Explanation:
My science teacher has told us that plants need the sun to photosynthesis. And even though their is a lot of sun, they need to compete for it still.
. The atoms are held together because they both pull on the ________________ electrons
Answer:
negative and positive i think
Explanation:
True or false? During a change of state the temperature of the substance does not change.
Answer:
false
Explanation:
the temperature of a substance can not remain constant as the substance changes from solid to liquid then finllay from liquid to gas. This is so because as a solid is heated it changes state and once it rechanges it boiling point it changes to gas or vapour.
You can tell if an object is in motion if ___.
A. Its reference point is in motion
B. Its reference point is stationary
C. Its position changes relative to a reference point
D. It appears to move backward when another object moves forward
Answer:
c
Explanation:
I think that's the answer
When 2 or more different atoms chemically combine A. Element B. Compound
Answer:
compound
Explanation:
Answer:
compound
Explanation:
A molecule is formed when two or more atoms join together chemically. If atoms combine that are of two or more different elements, we call that a compound. All compounds are molecules, but not all molecules are compounds. When two hydrogen atoms combine with one oxygen atom, it becomes the compound water
How many atoms should be present at the end of the reaction ?
Given the unbalanced equation showing the reactants and product of a reaction occurring at 298 K and 100. kPa:
____P4(s) + ____Cl2(g) ____PCl3(l) + energy
Balance the equation below for the reaction, using the smallest whole number coefficients.
____P4(s) + ____Cl2(g) ____PCl3(l) + energy
Balanced equation
P4(s) +6Cl2(g) ⇒4PCl3(l) + energy
Further explanationGiven
Reaction(unbalnced)
P4(s) +Cl2(g) ⇒PCl3(l) + energy
Required
Balanced equation
Solution
Give a coefficientaP4(s) +bCl2(g) ⇒PCl3(l) + energy
Make an equationP, left=4a, right=1⇒4a=1⇒a=1/4
Cl, left=2b, right=3⇒2b=3⇒b=3/2
The equation becomes:
1/4P4(s) +3/2Cl2(g) ⇒PCl3(l) + energy x 4
P4(s) +6Cl2(g) ⇒4PCl3(l) + energy
Write the name and symbol of the ion formedwhen a sulfur atom gains two electrons. a.an aluminum atom loses three electrons. b.a nitrogen atom gains three electrons. c.a calcium atom loses two electrons.
Answer:
SULFUR: S²-
ALUMINIUM: Al³†
NITROGEN: N³-
CALCIUM: Ca²†
Help me asap it’s for my chem
What happens when the number of electrons and protons inside of an atom are Not equel?
Hello, It's me Moriah Elizabeth!
Answer:
When the number of electrons does not equal the number of protons, the atom is ionized.
how many molecules are in 4Li2SO4?
Answer:
4
The molecule here is LiSO4, because the definition of a molecule is 2 or more molecules chemically bound together. A coefficient of 4 is another way of saying "4 molecules of LiSO4"
how is sulphur dioxide gas prepared in the laboratory?wite its bleaching actions
Answer:
In the laboratory, sulphur dioxide is prepared by the reaction of metallic sulphite or a metallic bisulphite with dilute acid.
Explanation:
For example, a reaction between the dilute sulphuric acid and sodium sulphite will result in the formation of SO2. 2.
How many mole of HCL is produced if 4g of hydrogen is completely reacted with chlorine
Answer:
4 moles of HCl are produced.
Explanation:
Given data:
Mass of hydrogen = 4 g
Number of moles of HCl = ?
Solution:
H₂ + Cl₂ → 2HCl
Number of moles of hydrogen:
Number of moles = mass/molar mass
Number of moles = 4 g/2 g/mol
Number of moles = 2 mol
now we will compare the moles of hydrogen and HCl.
H₂ : HCl
1 : 2
2 : 2/1×2 = 4 mol
Thus, 4 moles of HCl are produced.
How many molecules of NH3 will be produced if I use 10g of H2?
Answer:
20.05 ×10²³ molecules
Explanation:
Given data:
Mass of hydrogen = 10 g
Number of molecules of ammonia = ?
Solution:
Chemical equation:
3H₂ + N₂ → 2NH₃
Number of moles of hydrogen:
Number of moles = mass / molar mass
Number of moles = 10 g / 2 g/mol
Number of moles = 5 mol
now we will compare the moles of hydrogen and ammonia.
H₂ : NH₃
3 : 2
5 : 2/3×5 = 3.33 mol
Number of molecules of ammonia:
1 mole contain 6.022 ×10²³ molecules
3.33 mol × 6.022 ×10²³ molecules / 1 mol
20.05 ×10²³ molecules
What is the density of an object that has a mass of 500g and a volume of
10mL?
Which of the following is most likely to occur due to severe winds during a hurricane?
Answer:
a
Explanation:
Answer:
A
Explanation:
atoms or helium nickel would represent _____
Answer:
they represent their own atoms
Answer:
Elements
Explanation:
How many moles are in 5.32 x 1020 atoms
of copper?
What is the answer but in numbers ?
Answer is 1.41 x 10 with the exponent of 24, atoms
Explanation : Look at the picture i attached.
What is the correct name for H3AsO3
Answer:
arsenous acid
Explanation:
What is the momentum of a bird with a mass of 2 kg flying at 9 m/s? *
Answer:
18 kg.m/sExplanation:
The momentum of an object can be found by using the formula
momentum = mass × velocity
From the question we have
momentum = 2 × 9
We have the final answer as
18 kg.m/sHope this helps you
An atom has 38 protons and 42 neutrons it is ?
Answer:
The answer is, Strontium
Answer:
Name Molybdenum
Atomic Mass 95.94 atomic mass units
Number of Protons 42
Number of Neutrons 54
Number of Electrons 42
Explanation: