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sergij07 [2.7K]
3 years ago
15

Horsetail are helpful for treating

Chemistry
1 answer:
In-s [12.5K]3 years ago
7 0

Answer:

<em>urinary tract infections, </em>

<em>urinary tract infections, loss of bladder control (urinary incontinence), </em>

<em>urinary tract infections, loss of bladder control (urinary incontinence), wounds, </em>

<em>urinary tract infections, loss of bladder control (urinary incontinence), wounds, and many other conditions, but there is no good scientific evidence to support these uses.</em>

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The observed brightness of a star depends on which factors?
dimulka [17.4K]

Answer:

b..............

Explanation:

......

6 0
3 years ago
Dry ice changes from a solid directly into a gas at room temperature. Sublimation is the transition of a substance directly from
Svetach [21]

Answer:

The process in which a solid changes directly to a gas is called sublimation. It occurs when the particles of a solid absorb enough energy to completely overcome the force of attraction between them. Dry ice (solid carbon dioxide, CO2) is an example of a solid that undergoes sublimation.

3 0
2 years ago
You have 100 g of Pb(NO3)2. How many moles is this?​
topjm [15]

Answer:

0.302 moles

Explanation:

Data given

Mass of Pb(NO₃)₂ = 100 g

Moles of Pb(NO₃)₂ = ?

Solution:

To find mole we have to know about molar mass of Pb(NO₃)₂  

So,

Molar mass of Pb(NO₃)₂  = 207 + 2[14 + 3(16)]

                                           = 207 + 2[14 + 48]

                                           = 207 + 124

Molar mass of Pb(NO₃)₂  = 331 g/mol

Formula used :

                no. of moles = mass in grams / molar mass

Put values in above formula

                   no. of moles = 100 g / 331 g/mol

                   no. of moles = 0.302 moles

no. of moles of  Pb(NO₃)₂ = 0.302 moles

7 0
3 years ago
A naturally occurring oil co-distills with water to produce an oil/water distillate that is 20% oil by weight. If the molecular
Gelneren [198K]

Answer:

Explanation:

Partial pressure of oil = mole fraction of oil x total pressure

mole fraction of oil = mole of oil / mole of water + mole of oil

= mole of oil = mass of oil / molecular weight of oil

= 20 / 100 = .2

mole of water = 80 / 18

= 4.444

mole fraction of oil =  .2 / .2 + 4.444

= .2 / 4.644

Partial pressure of oil = mole fraction of oil x total pressure

= (.2 / 4.644 ) x 760 mm

= 32.73 mm Hg .

3 0
3 years ago
A substance made of both metal and nonmetal atoms ?
Nat2105 [25]
A metalloid is a metal and a nonmetal
6 0
3 years ago
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