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3 years ago

According to the weather map seen here, we could expect weather conditions in Memphis to include

Chemistry

2 answers:

AnnyKZ [126]3 years ago

8 0

Answer:

A. Warmer tempartures,clearing

Explanation:

777dan777 [17]3 years ago

6 0

Answer:

SOMEONE AANSWER THIS PLEASE OMG !!!!!!

Explanation:

IM STUPID HELPPPZp

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A chemistry student was asked to calculate the number of moles of iron required to react with 1.20 mol of oxygen to produce iron

Delicious77 [7]

Answer:Write and balance the equation

4Fe + 3O2 -> 2Fe2O3

0.32 mol Fe x 2 mol Fe2O3 / 4 mol Fe =

0.16 mol of Fe2O3

Explanation:

8 0

3 years ago

hi:) anyone able to explain no.2 of what happens to particles of a solid that is heated until it melts? I don’t understand it. T

Viefleur [7K]

In a solid the particles are all really close together and stuck like that. As the solid melts and becomes a liquid the particles spread out. A solid won’t easily change its shape because the particles are bound together but in a liquid the shape is more fluid, take water when you pour it into a container it will change to fit the shape of a container this is because the particles aren’t as close and can move around. The particles of a solid change when it melts because it is changing states to a liquid.

8 0

3 years ago

If 10.62 mL of a standard 0.3330 M KOH solution reacts with 98.20 mL of CH3COOH solution, what is the molarity of the acid solut

Nikolay [14]

Answer:

0.036 M of $CH_{3} COOH$

Explanation:

It is an example of acid-base neutralization reaction.

KOH + $CH_{3} COOH$ ----> $CH_{3} COO^{-} K^{+}$ + $H_{2}O$

Base Acid Salt

When two component react then the number of moles of both the component should be same, therefore the number of moles and acids and bases should be the same in the following .

Molarity= $\frac{\textrm{No. of Moles}}{\textrm{Volume of the Particular Solution}}$

No.of moles= Molarity × Volume of the Particular Solution

Therefore,

$M_{1}V_{1} =M_{2}V_{2}$ ------------------------------(1)

where

$M_{1}$ = Molarity of Acid

$V_{1}$ = Volume of Acid

$M_{2}$ = Molarity of Base

$V_{2}$ = Volume of Base

$M_{1}$ =0.3330 M

$V_{1}$ =10.62 mL

$V_{2}$ =98.2 mL

$M_{2}$ =??(in M)

Plugging in Equation 1,

0.3330 × 10.62 = $M_{2}$ × 98.2

$M_{2}$ = $\frac{0.3330*10.62}{98.2}$

$M_{2}$ =0.036 M

3 0

3 years ago

The major reason for chemical bonding is _____.. . . for atoms to gain the stability of the octet. to form a substance in low su

Otrada [13]

In my opinion, the best answer among the choices listed above is the first option. The major reason for chemical bonding is <span>for atoms to gain the stability of the octet. In general, chemical reactions happen in order for substances achieve stability or appropriately achieve equilibrium.</span>

7 0

3 years ago

To what temperature does a 250 ml cylinder containing 0.40 grams of helium gas need to be collected in order for the pressure to

VMariaS [17]

Answer:

T =76.13 K

Explanation:

Given data:

Temperature of gas = ?

Volume of gas = 250 mL(250/1000 = 0.25 L)

Mass of helium = 0.40 g

Pressure of gas = 253.25 kpa (253.25/101 = 2.5 atm)

Solution:

Formula:

PV = nRT

First of all we will determine the number of moles of helium.

Number of moles = mass/ molar mass

Number of moles = 0.40 g/ 4 g/mol

Number of moles = 0.1 mol

Now we will put the values.

R = general gas constant = 0.0821 atm.L/ mol.K

T = PV/nR

T =2.5 atm× 0.25 L /0.1 mol ×0.0821 atm.L/ mol.K

T = 0.625 /0.00821/K

T =76.13 K

6 0

4 years ago