50POINTS PLS HELP

the current in the first circuit is 0.4 A. A
second identical bulb is added in series. What will the current in the second circuit be? pls answer quickly as possible i have an examination tomorrow so I am preparing for the tests thanks​

Answer:

Carnivorous, or meat eaters for example wolves, crocodiles, eagles, piranhas and dragon fly larva

Omnivorous

Answer:

comes from a translation of the German word Edelgas, which means noble gas.

Why Are Noble Gases Called Noble? The term “noble gas” comes from a translation of the German word Edelgas, which means noble gas. German chemist Hugo Erdmann coined the phrase in 1898. Like a nobleman might consider it undignified to associate with commoners, noble gases tend not to react with other elements.

Explanation:

hope it helps

Answer:

When calcium oxide (chemical formula: CaO) reacts with water (chemical formula: H

2

​

O), the following reaction takes place:

CaO+H

2

​

O→Ca(OH)

2

​

he product of this reaction is calcium hydroxide, also known as slaked lime.

Thus, when calcium oxide reacts with water, slaked lime is produced.

Calcium oxide is also known as lime and is most commonly used for many purposes. It can be used for pH correction of water or for its disinfection (with excess lime). More importantly, lime has been used for a very long time to produce calcium carbonate by reaction with carbon dioxide. Calcium carbonate has been used as mortar for sealing the gaps between bricks, stones, etc.

The reaction for the production of calcium carbonate is:

CaO+CO

2

​

→CaCO

3

​

In reality the reaction is a two-step process, with formation of slaked lime in the first step and reaction of slaked lime with carbon dioxide to form calcium carbonate in the second.

Explanation:

Explanation:

Magnesium citrate is the best absorbed form while Magnesium Oxide is not. Magnesium (Mg) Oxide is the most poorly absorbed form.

✓

Answer:

119g

Explanation:

Just multiply

2.38% of 500 =

119 g

solution = solute + solvent

% mass of solute:

[tex]\tt \dfrac{mass~solute}{mass~solution}\times 100\%[/tex]

for % mass of solute = 2.38%, then mass of solute:

[tex]\tt =2.38\%\times 500~g=\boxed{\bold{11.9~g}}[/tex]

Reaction

SiCl₄+ 2Mg ⇒ Si + 2MgCl₂

to find limiting reagents: divide the number of moles by their coefficients

SiCl₄ = 1 mole : 1 (coefficient) = 1

Mg = 5 mole : 2 (coefficient) = 2.5

SiCl₄ as a limiting reactant (smaller), and Mg as an excess

then all the compounds involved in the reaction are based on moles of SiCl₄

Si produced =

[tex]\tt \dfrac{coefficient~Si}{coefficient~SiCl_4}\times mole~Si=\dfrac{1}{1}\times 1=1[/tex]

Reacted Mg (excess) = 2/1 x 1 = 2 mole

mole Mg remaining = 5 - 2 = 3 mole

Answer:

B.) He added a base to raise the PH

Explanation:

Took test

Answer:

B

Explanation:

I took the test!

Answer:

form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface.

Explanation:

Hope You Enjoy

Answer:

V = 250 cm3

= 250 × 10^(-3) dm3

= 1/4 dm3

no. of mole = 0.2×1/4 mol

= 0.05 molExplanation:

Total , 0.050 moles of sodium chloride (NaCl) is required to prepare 250 cm³ of a 0.200 mol/dm³ solution.

To calculate the amount of NaCl (sodium chloride) in moles required to prepare a 0.200 mol/dm³ solution in a volume of 250 cm³, you can use the formula:

Amount of substance (in moles) = Concentration × Volume

Given:

Concentration (C) = 0.200 mol/dm³

Volume (V) = 250 cm³

First, convert the volume to dm³:

Volume (V) = 250 cm³ = 250/1000 dm³

= 0.250 dm³

Now, use the formula to calculate the amount of NaCl in moles:

Amount of NaCl = Concentration × Volume

Amount of NaCl = 0.200 mol/dm³ × 0.250 dm³

Amount of NaCl = 0.050 moles

Therefore, 0.050 moles of NaCl is required to prepare 250 cm³ of a 0.200 mol/dm³ solution.

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The odd of being injured if a collision occurs as a result of increasing speed to 65 on a 55 mph road zone is 24%.

Speed limits are set for safety, to reduce the likelihood of crashes, and reduce the likelihood of getting injured should crashes occur.

In a report released by the National Cooperative Highway Research Program in 2006, breaching the maximum on a road with a speed limit increases the likelihood of crashes and getting injured as a result.

Specifically, increasing the speed to 65 on a road with a 55 mph speed limit increase the chances of crashes by 5% while increasing the chances of getting injured as a result by 24%.

More on speed limits can be found here: https://brainly.com/question/2832864

Answer: This is the most basic method of showing feeding relationships. A food web is indeed a following diagram multiple food chains, relationships, and connections. Food pyramid: Often known as an energy pyramid, a food pyramid takes the food chain and extends it to the transfer of energy within a community.

Explanation:

Answer:

carbon because organic compounds are made up of hydrogen and carbon

2.87mL of 2.5 M K2SO4 are required to obtain 1.25 grams of the compound.

The volume of a substance can be calculated by dividing the number of moles of the substance by its molarity. That is;

volume = no. of moles ÷ molarity

According to this question, 2.5M K2SO4 are required to obtain 1.25 grams of the compound. The volume can be calculated as follows:

Molar mass of K2SO4 = 174.26 g/mol

moles of K2SO4 = 1.25g ÷ 174.26g/mol

moles of K2SO4 = 0.00717moles

Volume = 0.00717moles ÷ 2.5

Volume = 0.00287 L = 2.87mL.

Therefore, 2.87mL of 2.5 M K2SO4 are required to obtain 1.25 grams of the compound.

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The danger from radon gas would most likely be greatest in well-insulated homes. It is a toxic gas.

Radon is a naturally radioactive gas generated from different elements such as uranium or radium.

Radon is generated when these radioactive materials naturally decompose in the soils and/or rocks.

Radon is highly toxic and therefore this gas must be avoided to maintain healthy conditions in a home.

Learn more about the radon gas here:

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Answer:

it increases the amount of oxygen in the water. kind of like how people whisk stuff to make it light and airy; the cobbles incorporate air in the stream. same with any other body of water that has cobbles.

that oxygen helps the life under the water survive. fish filter oxygen in their lungs. yes, some surface for oxygen too, but it can be in the water.

Answer:

We could plant more trees :)

Explanation:

Trees producer oxygen AND absorb carbon dioxide, something our earth has too much of, thanks to humans

Answer:

Troposphere

Explanation:

the lowest layer of the earths atmosphere

The number of moles of water that would be produced will be 4 moles

From the balanced equation of the reaction:

2H2 + O2 ---------> 2H2O

Mole ratio of H2 and H2O = 2:1

Mole of H2 = 8 moles

Equivalent mole of H2O = 8/2

                                         = 4 moles

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Answer:

1. Diamonds

2. Graphite

3. Textiles

4. Life Itself

5. Coal

6. Graphene

7. Carbon Dioxide

8. Coca-Cola

9. Paintball Guns

10. White dwarf stars

11. Oil

12. Gasoline

13. Curede oil

14. Wood (almost all fibers used for clothes contain carbon, as they are either proteins from animals/plants, or they are plastics.)

15. Acetic acid.

16. Acetylene.

17. Benzeze.

18. Carbon dioxide.

19. Carbon disulfide.

20. Carbon monoxide.

Answer:

negative

Explanation:

Answer:

Either you didn't put the full question or your posting something you have to do in a pool

Explanation:

Answer:

that anyone can be a hero if they put their mind to it

Answer:

Heroes come from many cultures

Explanation:

i got it right

The soccer field has been placed with the outlines of the slaked lime. The chemical dust off from the falling has been calcium hydroxide.

The boundary wall to the soccer or the other field has been marked with slaked lime powder. The chemical has the ability to react with bacteria and act as a disinfectant.

The slaked lime chemically is a white powder of calcium hydroxide. Thus, after falling on the soccer field, the chemical dusted off by Carla is calcium hydroxide. Thus, option A is correct.

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Answer:

the is A or calcium hydroxide

Explanation:

i got this right just now since i took the test:)

Answer:

If you turn off one light bulb, then the others would go out. If one burns, the others burn, too. Do an experiment.

Explanation:

All household electrical circuits are wired in parallel with each other; there's nothing special about fluorescent lights. This is so that the full 120 volts is presented to each device. If you put devices in series, they will "share" the voltage, say 70 volts to one device and 50 volts to the second (adding up to the 120 volts in the circuit).

Answer:

1230

Explanation:

1.20×1025=1230 is your answer

Answer:

62.29 moles

Explanation:

See attached image

The equation is the representation of the chemical reaction. The reaction to be added to equation 1 to produce equation 2 is [tex]\rm 3\;CO\;+\frac{1}{2}\;O_2\;\rightarrow\;CO_2[/tex].

The chemical reaction is the change in the reactant for the formation of the product.

The given equation 1 has been:

[tex]\rm Fe_2O_3\;\rightarrow\;2\;Fe+2\;O_2[/tex]

The final reaction 2 has been:

[tex]\rm Fe_2O_3+3\;CO\;\rightarrow\;2\;Fe+3\;CO_2[/tex]

The reaction with carbon to utilize the reactant oxygen of reaction 1 forming carbon dioxide, results in reaction 2.

Thus, the reaction that must be added will be:

[tex]\rm 3\;CO\;+\frac{1}{2}\;O_2\;\rightarrow\;CO_2[/tex]

Thus, option A is correct.

Learn more about the chemical equation, here:

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Answer:

The correct answer is C.

Explanation:

I just got it correct on EDGE

Answer:

Hey buddy!

Explanation:

Keeping the body's conditions stable makes it possible for living things to survive. Osmosis plays an important role in the human body, especially in the gastro-intestinal system and the kidneys. Osmosis helps you get nutrients out of food. It also gets waste products out of your blood.

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