Plz answer!!! Due in 10 minutes!!! Will give BRAINLIEST and extra points to first correct answer!!!

Answer:

2000ml

Explanation:

you multiple 400ml with 0.5 ml to get the required meter for the water that needs to be evaporated

Answer:

C

Explanation:

An inverse relationship means that as one increases the other decreases. From the negative slope of this graph, you can tell that as volume increases, pressure decreases. If you look at the data point for 20 on the volume axis, it matches up with about 240 on the pressure axis.

D

all of above becuase it's all conservation

Answer:

The answer is c which is pollution is likely to decrease water supply in the future

Answer:

Fossils

Explanation:

Ancient plants and animal formed into rocks called fossils.

A fossil can be defined as the mineral impression or remains of living organisms such as plants and animals that are prehistoric in nature.

A geologic column can be defined as a collection of rock layers that are typically grouped based on their relative ages in a descending order i.e from oldest to the youngest.

Generally, the layers of the rock that are found in various parts of the world are known to be different because they all comprises of distinct Earth's geological history (fossils).

Answer:

Other times I place a candle in water and cover it with a glass jar  .

Explanation:

only to ... Many of you may already know this as the Whoosh Bottle demo due ... I have used this demo in the past for topics like exothermic reactions, combustion reactions, ... This adds to the evidence of a partial vacuum created in the bottle

Answer:

PbI₃ is the precipitate in the reaction

Explanation:

A precipitate is defined as a substance than appears after a chemical reaction because of the formation of an insoluble compound.

You can identify yhe precipitate in a chemical reaction because its state is solid (s). For example, in the reaction:

Pb(NO₃)₃(aq) + 3KI(aq) → PbI₃(s) + 3KNO₃(aq)

The Pb(NO₃)₃ and KI are soluble salts (Because are in (aq) medium) but the reaction produce a solid, PbI₃ and a soluble salt, KNO₃. The solid,

Answer:

causes job displacement

Answer:

Muscular System and the Skeletal System

Explanation:

The skeletal and muscular system work together but assisting each other for movement and support.

Answer: The initial temperature was 588 Kelvin

Explanation:

The combined gas equation is,

[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]

where,

[tex]P_1[/tex] = initial pressure of gas = 1.49 atm

[tex]P_2[/tex] = final pressure of gas = 657 torr = 0.864 atm   (760 torr = 1atm)

[tex]V_1[/tex] = initial volume of gas = 6400 ml

[tex]V_2[/tex] = final volume of gas = 9660 ml

[tex]T_1[/tex] = initial temperature of gas = ?

[tex]T_2[/tex] = final temperature of gas = [tex]245^0C=(245+273)K=515K[/tex]

Now put all the given values in the above equation, we get:

[tex]\frac{1.49\times 6400}{T_1}=\frac{0.864\times 9660}{515}[/tex]

[tex]T_1=588K[/tex]

The initial temperature was 588 Kelvin

Answer:

its absorbed by heat from consumers

Answer:Difference between Ceres and Pluto

Nestled in the asteroid belt between Mars and Jupiter, Ceres is a tiny loner, while Pluto — in the Kuiper Belt at the edge of the solar system — is nearly three times as big and hosts a handful of moons. A mixture of rock and water ice dominates Ceres' landscape, while methane and nitrogen ices cover Pluto

Explanation:

Answer:

I dont know im very sorry

Answer:

2

Explanation:

in terms of cells, it exists from previous existing cells, that means scientist are built up by the work of other scientist

Answer:

the answer is B

Explanation:

Answer:

A molecule of the compound carbon dioxide consists of one atom of carbon and two atoms of oxygen, so carbon dioxide is represented by the chemical formula CO2. Q: What is the chemical equation for this reaction? A: The chemical equation is: C + O2 → CO.

Explanation:

In the given molecular geometry, two atoms (C and O) have a tetrahedral molecular geometry.

The tetrahedral geometry is formed when there are four bonds all on one central atom. According to the VSEPR theory, the bond angles between the bonds are 109.5°.

Methane has tetrahedral geometry and the four equivalent bonds in 3 D corresponding to the four corners of a tetrahedron centered on the carbon atom.

In the given molecule, the carbon is attached to three hydrogens and one carbon atom with bond angles of 109.5° have a tetrahedral geometry and shape.

The oxygen atom is attached to two carbon atoms with bond angles of approximately 104.5° and contains two lone pairs. The oxygen atom has a tetrahedral molecular geometry. The oxygen atom is of the form AX₂E₂ and has bent shapes similar to the shape of water.

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Two atoms (C and O) in the specified molecular geometry have a tetrahedral molecular geometry.

When four bonds are present on the same core atom, the tetrahedral geometry is created. The bond angles between the bonds are 109.5° in accordance with the VSEPR hypothesis.

The four analogous bonds in three dimensions that make up methane correspond to the four corners of a tetrahedron that is centred on the carbon atom. Methane has a tetrahedral shape.

One carbon atom with a bond angle of 109.5° and a tetrahedral geometry makes up the carbon in the given molecule, which is joined to three hydrogen atoms.

Thus, with bond angles of roughly 104.5° and two lone pairs, the oxygen atom is joined to two carbon atoms. Tetrahedral molecular geometry characterises the oxygen atom.

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Answer:

The increase in the concentration of reactants increases the frequency of effective collisions.

Explanation:

The concentration of reactants determines the rate of reaction by providing the number of reactants available to yield an effective collision. There is a direct relationship between the concentration of reactants and rate of reaction.

Answer:

maybe maybe maybe maybe

Answer:

[tex]5850\ \text{cal}[/tex]

Explanation:

m = Mass of water = 4500 g

c = Specific heat of water = [tex]1\ \text{cal/g}^{\circ}\text{C}[/tex]

[tex]\Delta T[/tex] = Change in temperature of water = [tex]1.3^{\circ}\text{C}[/tex]

Heat is given by

[tex]q=mc\Delta T\\\Rightarrow q=4500\times 1\times 1.3\\\Rightarrow q=5850\ \text{cal}[/tex]

A slice of the bread contains [tex]5850\ \text{cal}[/tex].

Answer:

NaBr is ionic.........

Answer:

NaBr is ionic

(in the image is lewis structure and simplified)

Hope it helps you ✨

Answer:

255.51 cm³

Explanation:

From the question given above, the following data were obtained:

Initial temperature (T₁) = 50° C

Final temperature (T₂) = –5° C

Final volume (V₂) = 212 cm³

Initial volume (V₁) =?

Next, we shall convert celsius temperature to Kelvin. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T₁) = 50° C

Initial temperature (T₁) = 50° C + 273

Initial temperature (T₁) = 323 K

Final temperature (T₂) = –5° C

Final temperature (T₂) = –5° C + 273

Final temperature (T₂) = 268 K

Finally, we shall determine the initial volume of the hydrogen gas. This can be obtained as follow:

Initial temperature (T₁) = 323 K

Final temperature (T₂) = 268 K

Final volume (V₂) = 212 cm³

Initial volume (V₁) =?

V₁/T₁ = V₂/T₂

V₁ / 323 = 212 / 268

Cross multiply

V₁ × 268 = 323 × 212

V₁ × 268 = 68476

Divide both side by 268

V₁ = 68476 / 268

V₁= 255.51 cm³

Therefore, the initial volume of the hydrogen gas 255.51 cm³

Answer:

A half-equation shows you what happens at one of the electrodes during electrolysis. Electrons are shown as e-. A half-equation is balanced by adding, or taking away, a number of electrons equal to the total number of charges on the ions in the equation.

When positive metal ions (cations) arrive at the negative electrode (the cathode), they gain electrons to form neutral metal atoms. This is called reduction. For example:

Pb2+ + 2e- → Pb

When negative non-metal ions (anions) arrive at the positive electrode (the anode), they lose electrons to form neutral atoms or molecules. This is called oxidation. For example:

2Br- → Br2 + 2e-

Writing half equations

Cations go to the cathode. They need to gain enough electrons to make them neutral. So an Al3+ ion needs to gain three electrons:

Al3+ + 3e- → Al

Half-equations for non-metal anions are more difficult to balance. For example, chloride ions make chlorine gas. Most non-metal elements formed in electrolysis are diatomic molecules (eg Cl2). For example:

Cl- → Cl2

Add in two electrons to balance the charge so that both sides have the same charge. The two electrons need to go on the right-hand side, so that both sides have an overall charge of -2. For example:

2Cl- → Cl2 + 2e-

Although your question lacks some information a general answer is provided

The ionic half equation =  [tex]2H^{+} (aq) + 2e^{-} ----> H_{2} (g)[/tex]

The formation of hydrogen takes place at the negative electrode in a cell and the ionic half reaction that shows the formation of the hydrogen gas at the electrode is written as :

[tex]2H^{+} (aq) + 2e^{-} ----> H_{2} (g)[/tex]

Ionic half equation is the representation of the chemical activity ( reaction ) occurring at one of the electrodes of a cell. to balance a half reaction we add or remove electrons equal to charges on the ions.

Hence the Ionic half equation for the formation of hydrogen during electrolysis is written as ; [tex]2H^{+} (aq) + 2e^{-} ----> H_{2} (g)[/tex]

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Answer:

When the body senses it's not getting enough oxygen during sleep, it forces an awakening. At this time, the breathing airways open and breathing resumes. Because of this mechanism, you stand no chance of suffocating in your sleep.

Explanation:

Answer:

183g

Explanation:

mass can't be created or destroyed so i think you just add up the total amounts of matter

Answer:

Na+ lost one electron:    1s2 2s2 2p6

Cl- gained an electron:   1s2 2s2 2p6 3s2 3p6

Explanation:

Answer:

NH3 and HCl

Explanation:

NH3 and HCl are acids because of their hydrogen ions. NHO3 and NaOH are bases (you can tell because they have an OH). I don't believe SCl2 is an acid or a base

Answer:

Poorness is the one because he needs large money for his inventions and tools to use in them. He also have problems in securing patent protection and dealing with publishing pressure.

But the greatest problems is the opposition of his discoveries by the Catholic Church, they banned his books, they abstain him from teaching inventing, and writing. But as we know, a hero stands even on the hardest times

Explanation:

The challenges or opposition to Galileo Galilei, an astronomer, and mathematician, struggled with issues that contemporary scientists would recognize, such as obtaining funding, acquiring patent protection, and coping with the urge to publish.

Galileo was an astronomer and scientist. He was from Italy. He is a famous scientist and did many discoveries in the field of astronomy. The main discoveries were craters and mountains on the moon and the stars of the galaxy.

He was criticized for believing in the kinetic hypothesis, and he denied astronomical authority. The challenges he faced were patent problems and funding problems.

Thus, Galileo was criticized for defending the kinetic hypothesis and denying the astronomical authority of Scripture.

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