PLEASE PEOPLE I NEED HELP PLEASE IF YOU SEE THIS HELP ME ! :,(
NO LINKS !!!! PLEASE :)
Answers
Answer: 5.5 7.5 102
Explanation: using the equation above you can get these %s
Related Questions
what is the speed of a skater who travels a distance of 210 m in a time of 10 seconds
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Answer:
Speed =d/t. 200÷10=21÷1000=0.021 km/h
Explanation:
S=D/T
How does thermal energy flow?
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Answer:
Thermal energy typically flows from a warmer material to a cooler material.
Explanation:
noble gases are used in many situations where a safe and constant environment must be maintained. for example, helium is used to provide a protective atmosphere for making fiber optics and semiconductors. argon is used to fill incandescent and flourescent light bulbs to prevent oxygen from corroding the hot filament. why are noble gases used in these situations?
Answers
Answer:
Noble gases have a complete valence electron shell making them stable and nonreactive.
Explanation:
Look at the graph. Which part of the line shows a time
when the object was not moving?
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For the period of B, the line didn’t go up or down, it stayed still.
this shows that time was still passing but the car didn’t move.
explain why almunium is often used for long distance over head electric cables (high voltage)
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Answer:
because it does not cost much and can be found easily. due to their low resistance and excellent conductivity.
Explanation:
A student makes an aqueous solution of sodium hydroxide. Which statement correctly identifies the two ions present in the solute of this mixture?
The sodium ion is positive, and the hydroxide ion is negative.
The sodium ion is neutral, and the hydroxide ion is neutral
ОООО
The sodium ion is positive, and the hydroxide ion is
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Answer:
PLEASE DO IT PROPERLY I WELL ANSWER IT BUT I CAN'T "I CANNOT UNDERSTAND" I'M VERY SORRY
Explanation:
Question:A student makes an aqueous solution of sodium hydroxide. Which statement correctly identifies the two ions present in the solute of this mixture?
A student makes an aqueous solution of sodium hydroxide. Which statement correctly identifies the two ions present in the solute of this mixture?The sodium ion is positive, and the hydroxide ion is negative.
A student makes an aqueous solution of sodium hydroxide. Which statement correctly identifies the two ions present in the solute of this mixture?The sodium ion is positive, and the hydroxide ion is negative.The sodium ion is neutral, and the hydroxide ion is neutral
A student makes an aqueous solution of sodium hydroxide. Which statement correctly identifies the two ions present in the solute of this mixture?The sodium ion is positive, and the hydroxide ion is negative.The sodium ion is neutral, and the hydroxide ion is neutralОООО
A student makes an aqueous solution of sodium hydroxide. Which statement correctly identifies the two ions present in the solute of this mixture?The sodium ion is positive, and the hydroxide ion is negative.The sodium ion is neutral, and the hydroxide ion is neutralООООThe sodium ion is positive, and the hydroxide ion is
Answer:The litmus paper test is a simple test in order to determine whether a given solution is acidic or basic. One will have to place a drop of a solution on the litmus paper. If it changes a red litmus paper to blue, the solution is basic. If it changes a blue litmus paper to red, the solution is acidic.
the are 2 answers
2nd² answer:It's because of 7-hydroxyphenoxazone. When exposed to acids below pH 4.5, the molecule looks like the image below and this gives litmus paper its red color. As the pH of the test solution moves towards alkaline, one of the hydrogen atoms (white hemispheres) starts to break off (disassociate).
CARRY ON LEARNING
THANKS FOR THE POINTS I HOPE YOU'LL UNDERSTAND ME.
P I E C K N P I E C K __________________Write a balanced equation and name the products of the reaction CaCl2+Na3(PO4)
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Answer:
3CaCl2 + 2Na3(PO4) → Ca3(PO4)2 + 6NaCl
Explanation:
DOUBLE REPLACEMENT REACTION
CaCl2 + Na3(PO4) → Ca3(PO4)2 + NaCl
3CaCl2 + 2Na3(PO4) → Ca3(PO4)2 + 6NaCl
calcium chloride + sodium phosphate → calcium phosphate + sodium chloride
Hope that helps
Read this sentence from Chapter One of Jack London’s The Call of the Wild.
Buck rushed at the splintering wood, sinking his teeth into it, surging and wrestling with it. Wherever the hatchet fell on the outside, he was there on the inside, snarling and growling, as furiously anxious to get out as the man in the red sweater was calmly intent on getting him out.
What is a good prediction question to ask after reading this excerpt?
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Answer:
b)
Explanation:
It shows the natrual proggresion of a story and helps blend the narrtive together.
Answer:B
Explanation: i took the quiz on edge
select the best explanation for why methanol, ch3oh, cannot be used as a solvent for the deprotonation of a terminal alkyne by sodium amide, nanh2.
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Answer:
d. Methanol is more acidic than the alkyne and will be deprotonated instead.
Explanation:
because acidity is the ability to lose H+, leaving an anion behind; acidity depends on the stability of the anion.
for the reaction, Pb(no3)2 + 2kI yields pbi 2 + 2 kno3, how many moles of lead iodine are produced from 300 g of potassium iodine
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After the first four games of a professional football season, three players scored a total of 80 touchdowns. Duke Johnson scored 14 of the touchdowns. Josh McCown scored 40% of the touchdowns. Andre Roberts scored the remaining touchdowns. How many touchdowns did Andre Roberts score?.
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The number of touchdowns scored by Andre Roberts = 34 touchdowns
Given data :
Total number of touchdowns = 80
Number of players = 3
Determine the number of touchdowns scored by Andre RobertsPlayer 1 ( Duke Johnson ) scored = 14
Player 2 ( Josh McCown ) scored = 40% of 80 = 32
∴ number of touchdowns scored by player 3 ( Andre )
= 80 - ( 14 + 32 )
= 80 - 46 = 34 touchdowns
Hence we can conclude that the number of touchdowns scored by Andre is 34 .
Learn more about football touchdowns : https://brainly.com/question/1968336
List THREE reasons why acidic soil can be a general problem to a natural ecosystem.
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Answer:
Ok the poprtion would look like this : x 23
----------- = ----------
230 100
Explanation:
So for the last fill in it could be 52.9 or 60
i hope i got it correct lol pretty sure i did
Give atleast 5 differences in cell structures of plant and animal cells
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Part A
What question is being asked through this scientific investigation?
(I didn’t know what subject so sorry, also only answer if u have an answer.)
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Answer:
How will the ingredients effect the fermentation of each bottle? What will happen to the bottles and balloons when fermentation occurs?
Explanation:
Which of the following compounds will have the highest boiling point?
MgCl2
CO2
C12H22O12
,
H2O
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how many grams are in 4.07x10^15 molecules of calcium hydroxide
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There are 5.01 × 10-⁷grams in 4.07 x 10¹⁵molecules of calcium hydroxide.
HOW TO CALCULATE MASS:
The mass of a substance can be calculated by multiplying the number of moles in the substance by its molecular mass.
However, given that the number of molecules in calcium hydroxide is 4.07 x 10¹⁵molecules, we need to calculate the number of moles in Ca(OH)2 as follows:
no. of moles of Ca(OH)2 = 4.07 x 10¹⁵ ÷ 6.02 × 10²³
no. of moles = 0.676 × 10-⁸
no. of moles = 6.76 × 10-⁹ moles.
Molar mass of Ca(OH)2 = 74.093 g/mol
Mass of Ca(OH)2 = 74.093 × 6.76 × 10-⁹ moles
Mass = 5.01 × 10-⁷grams.
Therefore, there are 5.01 × 10-⁷grams in 4.07 x 10¹⁵molecules of calcium hydroxide.
Learn more about how to calculate mass at: https://brainly.com/question/8101390?referrer=searchResults
What is the pH of a substance that has [H+] = 0.0081?
8.1
-1.09
-8.1
1.09
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Is mercury an electrolyte at room temperature?
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Answer:
No
Explanation:
Despite mercury being a metal, it is a liquid at room temperature. It cannot be an electrolyte. This is because most of the liquids that can conduct electricity or acids bases and salts whereas mercury is a metal.
Different isotopes of an element have different numbers of:
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Explanation:
Different isotopes of an element have different numbers of mass number
Alkaline batteries adopted their name from the _____ that is present in the reactions at both the zinc anode and the MnO2 cathode.
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Answer:
hydroxide ion
Explanation:
The alkaline battery got this name because it has an alkaline electrolyte of potassium hydroxide.
How many grams of CO2 are produced using 0.29 moles of O2?
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The mass of CO2 produced using 0.29 moles of O2 is 12.76 grams.
The reaction between carbon and pxygen atom is exprssed as:
C + O2 -> CO2From he balanced equation, we can see that 1 mole O2 reacted to produce 1 mole of CO2.Hence if 0.29 moles of CO2 was used in the reaction, the number of moles of CO2 produced will be 0.29 moles as well.Mass of CO2 = number of moles * molar mass
Mass of CO2 = 0.29 * (12 + 32)
Mass of CO2 = 0.29 * 44
Mass of CO2 = 12.76grams
Hence the mass of CO2 produced using 0.29 moles of O2 is 12.76 grams.
learn more on stoichiometry here: https://brainly.com/question/16060199
A container that can't expand, may explode from the ________ in pressure.
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What is the mass number (A) of an atom that has an atomic number (Z=26) with 29 neutrons and 26 electrons?
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Answer:
A = 55
Explanation:
The atomic number is the number of protons also = the number of electrons, so basically we have 29 neutrons, 26 electrons and 26 protons. Anyway, it's asking the mass number which is the neutrons + the protons, so you just take 29+26 = 55
Atomic number=26
Neutrons=29
Electrons=26
Mass number=Proton+neutron
Protons=26
Mass number=26+29
=55
Why does atomic radii decrease as you move from the left to right across the period
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Answer:
This is because, within a period or family of elements, all electrons are added to the same shell.
When we move from left to right across the periodic table, we can see that the atomic radii keeps decreasing. This is because, as you move from left to right, the nucleus gains protons. The atomic number increases and hence the valence electron will feel more attracted towards the nucleus & the atomic radii will decrease.
[tex]\mathbb{MIREU}[/tex]
name a metal and non metal which are liquid at normal pressure and temperature
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Answer:
metal : Mercury(Hg)
non metal : bromine (Br)
Explanation:
mercury is liquid at room temperature and pressure and the same as bromine
the atomic number is the same as the number of which subatomic particle?
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SEP Construct Explanations You can see a cloud of your breath outside
on a cold day but not on a warm day. What do you think is happening to
pour breath in the cold air
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Answer:
it because of cold weather
Multiply or divide to find the equivalent fraction.
51/120=□/360
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Answer
153
Explanation:
51/120 = x/360
51(360) = 120x
18360 = 120x
18360/120x = 120x/120x
153 = x
Answer:
153
Explanation:
Helpp you will get a brainly
Answers
HC= Hydrocarbon
CH=benzene
Explanation:
HC is Hydrocarbon, how? -- Hydrocarbon, a category of substances consisting only of hydrogen and carbon.
CH is benzene, how? -- benzene is represented by the empirical formula CH, which indicates that a typical sample of the compound contains one atom of carbon (C) to one atom of hydrogen (H).
----(Is this what you meant???)
PLEASE DON'T PUT ANSWER AGAINST GUIDELINES!!!
Answers
Answer:
160.3 g S
Explanation: there you go