Answer:
switch
Explanation:
maybe the switch is not on
Answer:
1.maybe the switch is not on
2.low voltage of the electrical source
3.the connecting wires could be too long
Explain the connection between atoms and electricity
Answer:
The protons and electrons of an atom are attracted to each other. They both carry an electrical charge. Protons have a positive charge (+) and electrons have a negative charge (-). The positive charge of the protons is equal to the negative charge of the electrons.
Explanation:
The percentage yield of a reaction compares the actual yield with the __________ yield. What completes the sentence?
What are the Kelvin and Celsius temperature scales based on?.
Answer:
The Celsius scale sets the freezing point and boiling point of water at 0°C and 100°C respectively. The Kelvin scale is based on molecular motion, with the temperature of 0 K, also known as absolute zero, being the point where all molecular motion ceases.
Explanation:
ASAP 20 POINTS!!!
You add 28 grams of carbon. You find the actual yield to be 181.2 grams of CO2. What is the percent yield of CO2?
A) 15.5%
B) 209.2%
C) 15.8%
D) 6435%
Answer: the answer is D
Explanation: u have to divide
From which natural resource did John D. Rockefeller make his fortune? (1 point)
iron
O coal
O oil
O steel
Answer:
How did John D Rockefeller make his fortune? Rockefeller founded the Standard Oil Company in 1870. He ran it until 1897, and remained its largest shareholder.
Answer:
oil
Explanation:
How many moles of FeS2 are required to produce 32 g of So2
Answer:
So, the right answer is. No. of moles of FeS₂ = 0.25 mole. Explanation: From the balanced. 4 FeS2 + 11 O2 → 2 Fe2O3 + 8 SO2.
Explanation:
If a compound formula mass was experimentally determined to be 17 AMU the chemical formula would be
The chemical formula of a compound with a formula mass of 17 will be NH3
Formula massThe formula mass of a compound or molecule is derived by summing the average molar weight of the individual atoms that make up the compound or molecule.
In this case, the formula mass is 17.
For ammonia with chemical formula NH3;
Molar weight of H = 1
Molar weight of N = 14
Formula mass = (14) + (1 x 3)
= 17 AMU
More on formula mass can be found here: https://brainly.com/question/867780
Answer: NH3
Explanation:
Witch is the best definition to describe a transfer of energy ?
Answer:
Energy transfer is the movement of energy from one place to another.
Explanation:
However, energy cannot be created or destroyed :)
what are some orgenells in a plant
Answer:
Chloroplasts and mitochondria. Both organelles contain double membranes including characteristic internal membranes, called thylakoids in chloroplasts and cristae in mitochondria.
Answer: (1) nucleolus (2) nucleus (3) ribosome (4) vesicle (5) rough endoplasmic reticulum (6) Golgi apparatus (7) cytoskeleton (8) smooth endoplasmic reticulum (9) mitochondria (10) vacuole (11) cytosol (12) lysosome (13)
Explanation: hi
Chemistry students were testing compounds in an aqueous solution to see which one had the strongest electrical current. There are three beakers each with a different compound. The first beaker and the second beaker lit the light bulbs brightly. The third beaker did not light up the bulb. With the information that is provided, what is the best explanation for the first and second beaker being the strongest electrolytes?
A)The first and second beakers contain a solution that partially dissociates the ions. These ions create an electrical current. The third beaker solution completely dissociates the ions. It is a strong electrolyte.
B)The first and second beakers contain a solution that completely dissociates the ions. These ions create an electrical current. The third beaker solution does not dissociate ions. It is a nonelectrolyte.
C)The first and second beakers contain a solution that does not dissociate ions. These ions create an electrical current. The third beaker solution completely dissociates the ions. It is a strong electrolyte.
D)The first and second beakers contain a solution that completely dissociates the ions. These ions do not create an electrical current. The third beaker solution does completely dissociates the ions. It is a strong electrolyte.
Answer:
B)The first and second beakers contain a solution that completely dissociates the ions. These ions create an electrical current. The third beaker solution does not dissociate ions. It is a nonelectrolyte.
Explanation:
Electrolytes dissociate ions. They are also conductors. Since the first 2 bulbs light up strongly, we can assume that the ions completely dissociated. Since the 3rd did not light up, it is a nonelectrolyte.
Answer:
The first and second beakers contain a solution that completely dissociates the ions. These ions create an electrical current. The third beaker solution does not dissociate ions. It is a nonelectrolyte.
Explanation:
Ionic Bonds fill in the blanks
Answer:
In an ionic bond, metals lose valence electrons and become positively charged cations. Nonmetals gain valence electrons and become negatively charged anions.
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What are the ways that citizens can follow in order to save water? i need 5 point min please
Answer:
the ways that citizens can follow in order to save water are:
-If you wash dishes by hand, don't leave the water running for rinsing
-Check faucets and pipes for leaks
-Don't let the faucet run while you clean vegetables
-Use your automatic dishwasher for full loads only
-Take shorter showers
-Only run the washing machine and dishwasher when you have a full load.
How much potassium iodide to take for radiation protection.
Age GroupKI DosageNumber of 65-mg tabletsAdults over 18 years130 mg2Over 12 - 18 years and over 150 pounds130 mg2Over 12 - 18 years and less than 150 pounds65 mg1Over 3 -12 years65 mg1
Explanation:
HURRY PLSS
What happens to the energy added during a phase change?
O A. It is used for the phase change.
B. It decreases the temperature.
C. It is converted to kinetic energy.
bai
D. It increases the temperature.
Answer:
A. It is used for the phase change.
Which action is not an accomplishment of the Apollo missions?
to orbit the Earth for two weeks
to study the surface of the moon
to send rovers to the Moon
to land on the moon
Answer:
B- to study the surface of the moon
Need help with balancing equations!
Answer:
Fe2O3 + 3CO → 2Fe + 3CO2
Explanation:
the numbers in front are the numbers you need
[tex]\qquad \qquad\huge \underline{\boxed{\sf Answer}}[/tex]
Here's the balanced chemical equation for given reaction ~
[tex] \sf Fe_2O_3 (s) +3 \: CO (g) =2 \: Fe(l) + 3\: CO_2 (g)[/tex]
As we can see, the Coefficient of Fe (l) is 2
What is the equilibrium concentration
of C at 30°C for the gaseous reaction
A + B <-> 2C
if Kc = 4.0 and [Al]i = [B]i = 2.0 M ?
[?]M
Answer:
56
Explanation:
[tex]\\ \rm\Rrightarrow K_c=\dfrac{[Products]}{[Reactants]}[/tex]
Now
[tex]\\ \rm\Rrightarrow k_c=\dfrac{[C]^2}{[A]^1[B]^1}[/tex]
Put values
[C] be x[tex]\\ \rm\Rrightarrow 4=\dfrac{x^2}{2^2}[/tex]
[tex]\\ \rm\Rrightarrow x^2=4(4)[/tex]
[tex]\\ \rm\Rrightarrow x^2=4^2[/tex]
[tex]\\ \rm\Rrightarrow x=4.0M[/tex]
help me please(｡+‿+｡)
4. Change in temperature (｡^‿^｡)
what happens when magnesium is burnt in air?
It forms magnesium oxide by reacting with oxygen
The balanced equation is provided by
[tex]\\ \rm\hookrightarrow 2Mg+O_2=2MgO[/tex]
On both sides
Mg=2O=2Hence balanced
What kind of animal is more likely to have taste buds for umami flavors, a carnivore or an herbivore? Explain.
A volcano erupts and lava flows for 10 miles before slowly cooling into solid rock. Is this
change endothermic or exothermic? *
Endothermic because cold energy enters as the lava cools then forms a solid.
Exothermic because heat energy exits as the lava cools then forms a solid.
Endothermic because heat energy enters as the lava cools then forms a solid.
Exothermic because cold energy exits as the lava cools then forms a solid
Answer:
My Answer:
Explanation:
Exothermic because heat energy exits as the lava cools then forms a solid.
Do you know any element which have no neutron in its atom?
Answer:
hydrogen
Explanation:
hydrogen has 1 proton, 0 neutrons and one electron
Answer:
There is only one stable atom that does not have neutrons.
Explanation:
Which of the following questions may be difficult to test scientifically?
A. What is the average flight speed of an African Swallow?
B. How was Hawaii formed?
C. Why is cheating wrong?
D. Is there evidence of water on other planets?
The question that may be difficult to test scientifically is Why is cheating wrong?
What is scientific experiment?An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried.
The following questions can be test scientifically.
What is the average flight speed of an African Swallow?How was Hawaii formed?Is there evidence of water on other planets?Thus, the question that may be difficult to test scientifically is Why is cheating wrong?
Learn more about scientific experiment here: https://brainly.com/question/17274244
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What does acetic anhydride form when it reacts with water?
What does acetic anhydride form when it reacts with water?
When acetic anhydride reacts with water it forms acetic acid. In other words, The hydrolysis of acetic anhydride in presence of water forms acetic acid.*Note that:- It is an exothermic reaction.
Calculate the molarity of 1 mole of NaNO3 in 500 mL of water
Answer:
2.00 mol/L or 2.00 M
Explanation:
500 mL ( 1 L / 1,000 mL) = 0.500 L
M = 1 mole NaNO3 / 0.500 L = 2.00 mol/L or 2.00 M
Hope this Helps!!!!
Which of these best describes frequency?
the number of vibrations per unit time
the loudness of a sound
the energy that bounces off an object
the bending of light as it passes through substances
==============================
[tex] \large \sf \underline{Question:}[/tex]
Which of these best describes frequency?
A. The number of vibrations per unit timeB. The loudness of a soundC. The energy that bounces off an objectD. The bending of light as it passes through substances==============================
[tex] \large \sf \underline{Answer:}[/tex]
[tex] \qquad \qquad \huge \bold{Option \: A}[/tex]
==============================
[tex] \large \sf \underline{Explanation:}[/tex]
The number of vibrations per unit time is called frequency.Additional Information: The other given choices best describes; Phon, Reflection, and Refraction.
==============================
What best describes the relationship between the frequency of an oscillation and the period of the oscillation?
brainly.com/question/13112321What best describes frequency?
brainly.com/question/4027382==============================
what is ( H+) and (OH-) in a healthy person's blood that has a PH of 7.50 assume that the temperature of the blood is 298 K.
pH = - log [H⁺]
pH = 7.5
[tex]\tt [H^+]=10^{-7.5}=3.16\times 10^{-8}[/tex]
pH + pOH = 14
7.5 + pOH = 14
pOH = 6.5
[tex]\tt [OH^-]=10^{-6.5}=3.16\times 10^{-7}[/tex]
36.0 g of Be contains how many moles? 1 mole = Molar mass (grams)
Answer:
this is the result
Explanation:
36.0
BE=4
36.0÷4
= 9
HELP PLEASE!! 20 POINTSS
What happens when a fatty acid is reacted with naoh.
