Please help I’m marking the brianliest answer please

[tex]\tt \rho=\dfrac{m}{v}=\dfrac{7\times 10^2~g}{1.3~g/L}=538~L[/tex]

Answer:

first option - liquid particles gain kinetic energy and start moving faster around each other

Explanation:

this is a rising section of the graph, meaning that the state of matter is not changing but it warming up and increasing particle movement. This increase in movement is explained by the increase in kinetic energy. (when the kinetic energy rises, the movement rises)

Explanation:

Consider that strong bases are strong nucleophiles, and thus unstable with the negative charge associated with dissociation from the molecule. Hence, strong bases are generally very poor leaving groups, but can be converted into good leaving groups that are more stable with the associated negative charge.

Explanation:

water can be separated from salt solution by simple distillation. This method works because water has a much lower boiling point than salt. When the solution is heated, the water evaporates. It is then cooled and condensed into a separate container.

Answer:

100 / 500

Explanation:

100 / 500 is equivalent to 1 / 5.

Answer: You need approximately 70 g of potassium carbonate.

Explanation:

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We have that the value of Ki for the inhibited reaction

a)

Generally, if the fee of Vmax binds, the place the enzyme inhibitor binds solely to the complicated fashioned between the enzyme and the substrate.

b) V diminished through 70%

Thereofore

Alternate = 1 - 0.7 = 0.3V

Hence

0.3 =1/ ( 1 + [I]/KI)

1= 0.3(1 + 0.657/KI )

0.3 + 0.1971KI = 1

KI = 3.551mM

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Answer:

Multiply 0.0543 L by a 1000 to get to mL, move the decimal point 3 times to the right, and you get 54.3 mL

Answer:

it's a I took the test

Explanation

Answer:

A) The new substance will need more energy to form its chemical bonds than the old substance will release.

Explanation:

Answer: The empirical formula for C6H12O6 is CH2O. Every carbohydrate, be it simple or complex, has an empirical formula CH2O

Explanation:

Answer:

The combined weights of several liquids mixed in an open flask be less than the sum of all the weights of the liquids because when the reaction occurs new products are formed and also some gases which releases in the atmosphere.

Answer:

Carbon Dioxide

Explanation:

This is a covalent compound so to name it you have one carbon, no prefix needed, & 2 oxygen the prefix for 2 is Di-.

Answer:

[tex]keq=\frac{[NH_{3} ]^2}{[N_{2} ][H_{2} ]^3}[/tex]

Explanation:

The percent composition of water will be 15%

The percent composition of a component of a compound is found by dividing the mass of the component by the mass of the compound.

In other words:

Percent composition = mass of component/mass of substance x 100

In this case, the formula for barium chloride dihydrate is [tex]BaCl_2.H_4O_2[/tex]

The molar mass of the compound is 244.26 g/mol

The molar mass of the water component is 18 x 2 = 36 g/mol

Thus, the percent composition of water in the compound can be found, such that:

Percent composition of water = 36/244.26 x 100

                                      = 15% to the nearest whole number.

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Answer:

number 2 becaus 1 and 3 look simler.

Explanation:

Answer:

0.13 atm

Explanation:

Using the Ideal Gas Law; PV=nRT, we can rearrange to solve for pressure.

P=nRT/V

P is pressure, n is number of moles (0.023), R is a constant (0.08206 L*atm/mol*K), T is temperature in Kelvin (293.15K) and V is volume, 4.2 L.

So, plugging in;

P=(0.023mol)(0.08206L*atm/mol*K)(293.15K)/(4.2 L)

P=0.1317 atm

P=0.13 atm; multiply by 760 to get to Torr or mmHg.

The engine displacement in cubic nanometer (nm³) is 8.785×10²⁴ nm³

1 in³ = 1.639×10²² nm³

With the above convesion scale we can obtain the displacement in nm³

1 in³ = 1.639×10²² nm³

Therefore,

536 in³ = 536 × 1.639×10²²

536 in³ = 8.785×10²⁴ nm³

Thus, the displacement in nm³ is 8.785×10²⁴ nm³

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Answer:

C.) Sodium Chloride

Explanation:

Table salt is an example of an ionic compound. Sodium and chlorine ions come together to form sodium chloride or NaCl.

Explanation:

a. much smaller mass and oppisite charge.

Answer:

c-d

Explanation:

this is a section of the graph sloping down, meaning the state of matter isn't changing but is getting ready too (the actually changing of states happens in the flat sections). A-B is the gas cooling, b-c is the gas changing into liquid, which leads to the liquid cooling in the next section

The total pressure of gases is equivalent to 739mmH divided by the area.

To calculate the total pressure of gases, the next formula can be used:

The area of a cylinder is equal to 2πrh+2πr².

You can know the radio by checking the measurement of the base of the graduated cylinder. Also, you can determine the height by observing how many mm the gas is occupying. Then follow these steps:

Note: This question is incomplete because the height occupied by the gas and the radio of the cylinder are not provided. Due to this, I answered this question based on general knowledge.

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Answer:

emi should put it in a metal container and place directly to the sun emi should place two mirrors opposite it and that will increase the heat which will melt the Marsh mallow

Answer:

1 mole contains 6.02 ×10^23 atoms

1 mole of Sulphur will contain 6.02 ×10^23 atoms

2moles of. Oxygen will contain 2 x 6.02×10^23 atoms. This gives 12.04 × 10^23 atoms

Answer:

salinity is the concentrations of salts in water or soils, chlorinity is a measure of the concentration of halides in one kilogram of seawater. Explanation:
srry if its wrong ;-;

Answer:

Chlorinity and salinity are both measures of the saltiness of sea water. The relationship can be expressed mathematically, as salinity is equivalent to 1.80655 times the chlorinity.

Conclusion:

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Mathematics

Thank You!

Answered by: ms115

Answer:

Balance the equation first

[tex]2H_{2} \ + \ O_{2} \ --> \ 2H_{2}O[/tex]

          6.58g of Oxygen gas

Divide 6.58g by molar mass of oxygen (32g/mol)

6.58/32 = 0.205625 mol

Use mol to mol ratio from looking at the coefficients of the reactants, the mol ratio of Hydrogen gas to Oxygen gas is 2:1, so for every 1 mol of Oxygen, you need 2 times the mol of hydrogen for it to make water.

0.205625 * 2 = 0.41125 mol

To get the mass of hydrogen gas needed in the reaction, turn 0.41125 mol into mass by multiplying it with Hydrogen gas's molar mass, which is 2.02 g/mol.

0.41125 * 2.02  ≈ 0.83g of H2

Answer:

b option sir sidd dichhi good book goo

Answer:

Vanadium in given compound is metal and oxygen is non-metal so, the given compound is a binary ionic compound.

Answer:

The Changes I see is the Hot glass have less air bubbles than the Cold Glass. The Cold Glass has more air bubbles than the Hot Glass.

I hope this helps. I tried my best!! Good Luck!!

Answer:

because there are other particles to help it move around in the air