Answers
Answer:
its false
Explanation:
is this a joke. I honestly don't know why you would need help.
Explanation
Related Questions
NaHCO3 is an example of -
Answers
Answer:
sodium bicarbonate
Explanation:
Give me your worst/best pick up line (using these on my crush btw)
Answers
did it hurt when you fell from heaven ;)
Is your name wifi? cuz im really feeling a connection
If looks could kill, you'd be a weapon of mass destruction
Do you have a band aid? I scraped my knee falling for you:)
I'm not drunk, just intoxicated by you
are you a criminal? cuz you already stole my heart
i dont have a library card but do you mind if i check you out?
A teacher wants to figure out the amount of a solution that is needed for a titration experiment in a class lab. The class has 15 students, and each experiment needs 50 mL of solution.
If each student will perform the experiment two times, how many mL of solution will the teacher need for the whole class?
375 mL
750 mL
1500 mL
3000 mL
Answers
Answer:
Im sure it's 1500 mL
Explanation:
You would have ti multiply by 15 i think
Answer:
It is C) 1500 mL
Explanation:
It is C) 1500 mL
I must type a short response. Can anyone help me out?
Answers
Explanation:
The fluids seperated because of the different density of the liquids. The lower liquid has a high density while the liquid on top has a low density
A scientist measures the heart rates of 30 students from the same class before
and after they run for different amounts of time. The experimental set up is
shown below:
• Group 1 had ten students who ran one lap.
• Group 2 had ten students who did not run at all.
• Group 3 had ten students who ran two laps.
Group 4 had 30 students from another class whose heart rates were
not measured.
Which group is the control in this experiment?
A. Group 1 from this class
B. Group 2 from this class
C. Group 3 from this class
D. Group 4 from another class
Answers
The for this question will be d
need some help with this
Answers
Answer:
Speed
Explanation:
Please answer 7-9 i am using alot of my points for this
Answers
Answer:
7... simalair: made of more than 2 things DIffernt: elemants are made of atoms.
Explanation:
how many moles are equal to 89.23g of calcium oxide?
Answers
mass of calcium oxide equals 89.23 g
molar mass of calcium oxide equals 56 G / Mole
the formula which is used as much of CaO equals molar mass of CaO
now put all of the Given values in this formula, we would get the moles of calcium oxide.
moles of CaO= 88.23g over 56g/mole which would get you 1.593 moles
Write the type of each chemical reaction
Answers
1. Double Displacement
2.Double Displacement
3. Single Displacement
4. Decomposition
5. Synthesis
6. Combustion
A gas occupies 4.31 liters at a pressure of 0.755 atm. Determine the volume if the pressure is increased to 1.25 atm. (Boyle)
Answers
Answer:
2.60 LExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we are finding the new volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
From the question we have
[tex]V_2 = \frac{4.31 \times 0.755}{1.25} = \frac{3.25405}{1.25} \\ = 2.60324[/tex]
We have the final answer as
2.60 LHope this helps you
What is the scientific name for an orca or killer whale?
FIRST ONE WILL BE MARKED “BRAINIEST”
Answers
Explanation:
Orcinus orca is the name of orca
The solute will dissolve quicker if the solute is more?
A. shaken.
B. saturated.
C. cooled.
D. settled.
Answers
Answer:
A) Shaken is the correct answer
Explanation:
The other three don't fit in with the solution if you think about it. When you shake something with lemonade crystals (Like a lemonade flavor packet in poured in a water bottle) it dissolves faster when you shake it rather than it sit on the bottom for 15 minutes! :) .
Hope this helps! :)
Answer:
The Person above me is correct
Explanation:
I got it right first try 100%
!!!pleaseee help ASAP ITS TIME!! based on the Lewis/electron dot representation of the two atoms predict the ratio
Answers
Answer: B 1:2
Explanation:
i legit searched it up and the answer poped up lol
Answer:
The ratio is 2:1 option C
Hope it helps..........
As part of a lab experiment, Tasha drops a metal cube into a beaker of water, as shown in the figure below. heat transfer After energy in the form of heat transfers between the substances, what is the final temperature of the water? Group of answer choices The final temperature is 25 °C because there is more water than metal. The final temperature is 50 °C because the metal warms the water to the temperature of the metal. The final temperature is between 25 °C and 50 °C because most of the thermal energy is lost to the air around the substances. The final temperature is between 25 °C and 50 °C because energy is transferred from the metal to the water.
Answers
Answer:
Explanation:ddxc
compare the values of the spin quantum number for two electrons in the same orbital
Answers
What is a limiting reagent? A.) The reactant that is used up first in a reaction B.) The reactant that is used the least reactive in a reaction C.) the reactant with the smallest coefficient in the equation D.) the reactant with the largest coefficient in the equation
Answers
Answer: A.) The reactant that is used up first in a reaction
The reactant that is totally consumed during a reaction, or the limiting reagent, decides when the process comes to an end. A limiting reagent is the reactant that is used up first in a reaction. Therefore, option A is correct.
What is a limiting reagent?A reactant that is completely consumed at the end of a chemical reaction is known as the limiting reagent. Since the reaction cannot proceed without this reagent, the amount of product that can be produced is constrained.
The limiting reactant is the one that is consumed first and sets a limit on the quantity of product(s) that can be produced. Calculate how many moles of each reactant are present and contrast this ratio with the mole ratio of the reactants in the balanced chemical equation to get the limiting reactant.
The terms limiting reagent and limiting agent may also be used to describe the limiting reactant.
Thus, option A is correct.
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Calculate the percent composition of chlorine in methyl trichloride, CHCl3.
Answers
Answer:
Chlorine --> 89%
Explanation:
Step 1) Add each element's amu up to get the total mass of the compound.
12.011+1.008+3(35.453) = 119.378.
Step 2) Divide the total mass of chlorine by the total mass of the compound.
3(35.453) = 106.359
106.359/119.378 = 0.8909430548.
Step 3) Now multiply by 100 to get the percentage.
0.8909430548*100 = 89.09430548%
Step 4) Estimate and submit your answer
89.09430548% estimates to 89%
Melted wax has a temperature of 54 deg. Celsius. Physical or chemical property?
Answers
The melting of solid wax to form liquid wax and the evaporation of liquid wax to form wax vapor are physical changes. The burning of the wax vapor is a chemical change.
Use the chart to determine which pair of atoms has the greatest difference in electronegativity.
A. Ca – Cl
B. H – Cl
C. Fe – Cl
D. P – Cl
Answers
The electronegativity for chlorine is 3.2. Now, we must look for the electronegativity that has the greatest difference from chlorine.
Calcium (Ca) - 1.0
Hydrogen (H) - 2.2
Iron (Fe) - 1.8
Phosphorus (P) - 2.2
As you can see, the element with the lowest electronegativity level is Calcium, therefore the greatest difference in electronegativity would be present between Calcium and Chlorine.
In which medium will a sound wave move more quickly?
Ethanol, air, vacuum, rock.
Answers
Answer:
Rock
Explanation:
cell phones use digital signals to send amd receive information. these digital signals travel as what kind of wave?
A.gamma rays
B.x-rays
C.microwaves
D.radio waves
Answers
What is a rule you can use to predict the shape of a molecule based on the number of atoms and line electron pairs (i.e., substituents) around a central atom?
Answers
Answer:
VSEPR PRINCIPLE
Explanation:
I did some research and that was what I found, I hope this helps.
1. Raw egg to boiled egg.
2. Batter to idli.
3. Wet clothes to dry clothes.
4. Woollen yarn to knitted
sweater.
5. Grain to its flour.
6. Cold water to hot water.
7. Straight string to a coiled string.
8. Bud to flower.
9. Milk to Cheese.
10. Cowdung to biogas.
II. Ice cream to melted ice-cream.
12. Stretched rubber band to
its normal size.
13. Souring of milk.
14. Ripening of a mango.
15. Dissolving sugar in water.
these are reversible or Irreversible, chemical or physical, Natural or manmade, periodic or non periodic,desirable or undesirable?
Answers
Answer:
1.Irreversible
2.Physical
3.
How many neutrons are present in 1 atom of chlorine?
A.
18
B.
32
C.
16
D.
25
Answers
Answer:
18
Explanation:
17 protons + 18 neutrons = 35
17 protons + 20 neutrons = 37 particles in the nucleus
Hope this is right
Hope this helps
What is the organism that is harmed in parasitism called? (3 points)
aCompetitor
b Host
c Parasite
d Prey
Answers
Answer:
B Host
Explanation:
this is due to the fact that the organism is hosting the parasite
The terms distance and displacement are used by scientists to describe very specific differences between an object's initial position and its final position. Describe a situation in which the distance traveled is great but the displacement is zero.
Answers
Explanation:
Distance is the total length of path one travels.
Displacement is the distance between the initial and final position.
For example, if your classroom is located 200m from your dormitory, you walk to class and back to your dormitory, your distance is 200m + 200m = 400m;
Your displacement is 0m. Your initial and final position is the same so no displacement.
Directions: Record the number of each atom in each molecule, then record the total number of atoms in the molecule.
Answers
N-1
H-4
Cl-1
Total = 6
CaClO3:
Ca-1
Cl-1
O-3
Total = 5
Atoms are the individual particles that make up all matter, while molecules are formed when atoms combine together through chemical bonding. There are 6 atoms in NH₄Cl and 5 atoms in CaClO₃.
Atoms are the basic building blocks of matter. They are the smallest units of an element that retain the chemical properties of that element. Atoms consist of a nucleus containing positively charged protons and neutral neutrons, surrounded by negatively charged electrons in energy levels or shells.
Molecules, on the other hand, are formed when two or more atoms chemically bond together. They can be made up of atoms of the same element or different elements. Molecules can exist as discrete units and can have distinct chemical and physical properties. Examples of molecules include water (H2O), carbon dioxide (CO2), and glucose (C6H12O6).
Therefore, there are 6 atoms in NH₄Cl and 5 atoms in CaClO₃ as listed in the table attached.
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When a ball is rolling down a hill, what forces are acting on the ball? Why does it speed up?
Include friction and gravity in your answer.
Answers
Answer:gravity
Explanation:
Answer:
the gravity speed up because the friction didn't speed up
A bond formed between a fluorine, F, atom and a fluorine, F, atom is likely to be____
A
ionic bond
B.
polar covalent
C
nonpolar covalent
D
alloy
Answers
Answer:
c) non polar Covalent
Explanation:
this is a molecule formed by atoms of the same element . they both have similar electronegativities and thus cancel out . This makes it a perfect Covalent molecule . The fact that it's a symmetrical molecule makes it non polar. a symmetrical molecule is a molecule formed by the overlap of orbitals of two atoms of the same element ( that is to say , there's no dipole )
balance this chemical equation pleaseee
