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3 years ago

Why would soap be unable to get laundry completely clean in areas with hard water?

Chemistry

1 answer:

Vesna [10]3 years ago

8 0

Answer:

Soaps behave differently in hard water than soft and it’s not good behavior. Soaps in soft water are able to function as a cleaning agent whereas soaps in hard water are not. The same amount of soap in soft water will form more suds than it will in hard water. This is because hardness minerals react and combine with soap.

Not Going To Be a Idiot. Hope This Helps.

Explanation:

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Part A. At present, automobile batteries are sealed. When lead storage batteries discharge, they produce hydrogen. Suppose the v

kondaur [170]

Answer:

Part A. 10 atm

Part B. C₆H₆

Explanation:

Part A. At present, automobile batteries are sealed. When lead storage batteries discharge, they produce hydrogen. Suppose the void volume in the battery is 100 mL at 1 atm of pressure and 25°C. What would be the pressure increase if 8 × 10⁻² g H₂ were produced by the discharge of the battery?

We can find the pressure for this amount of Hydrogen using the ideal gas equation.

$P.V=n.R.T\\P.V=\frac{m}{M} .R.T\\P=\frac{m.R.T}{M.V} =\frac{8 \times 10^{-2}g \times (0.082atm.L/mol.K) \times 298K }{(2g/mol) \times 0.1L} =10atm$

Part B. A certain compound containing only carbon and hydrogen was found to have a vapor density of 2.550 g/L at 100°C and 760 mmHg. If the empirical formula of this compound is CH, what is the molecular formula of this compound?

First, we have to look for the molar mass of the compound through the following expression:

$P.M=\rho .R.T\\M = \frac{\rho .R.T}{P} =\frac{2.550g/L \times (0.08206atm.l/mol.K) \times 373.15K }{760mmHg} .\frac{760mmHg}{1atm} =78.1g/mol$

Now, we need the relation between the molar mass of the molecular formula and the molar mass of the empirical formula.

$\frac{78.1g/mol}{13.0g/mol} =6.01 \approx 6$

Finnally, we multiply the empirical formula by this coefficient to get the molecular formula.

(CH) × 6 = C₆H₆

5 0

4 years ago

Indicate if each state below is either True or False: a. If a substance is oxidized, it gains electrons b. If an ion is oxidized

myrzilka [38]

Answer:

a. False

b. True

c. False

d. True

3 0

2 years ago

Which is not a property covalent bonds ?

viktelen [127]

your answer would be a. usually liquid or gas at room temperature

4 0

3 years ago

How does a hummingbird's beak help it to meet its basic needs?

masya89 [10]

Answer:Hummingbirds have long, needlelike beaks they use to probe deep into flowers. The hummingbird's beak is just a protective sheath for its tongue, which is actually what the hummingbird is using to get the nectar out of the flower. The tip of their tongue is forked and has little hairs all over it.

Explanation:

3 0

3 years ago

g What is the relationship between the moles of the limiting reagent and the change in temperature (i.e. directly proportional o

ivann1987 [24]

Answer:

number of moles is inversely proportional to the Temperature

Explanation:

As we know

PV = nRT

where P is the pressure

V is the volume

n is the number of moles

R is the gas constant

and T is the temperature

If we see the equation, we can find that n is inversely proportional to the Temperature

5 0

3 years ago