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3 years ago

24 * All the following hormones help in the appearance of beard in the adult male,except

Chemistry

2 answers:

timama [110]3 years ago

8 0

Answer:21

Explanation:sadadasdasdad

NISA [10]3 years ago

4 0

Answer:

Facial hair growth is largely propelled by testosterone, a hormone. Testosterone levels can vary. For men between 19 and 38, the normal range is 264 to 916 nanograms per deciliter

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How many grams of NaOh are produced with the reaction of 5.00 moles of water?

dusya [7]

Answer:

200g

Explanation:

Step 1:

The balanced equation for the reaction.

2Na + 2H2O —> 2NaOH + H2

Step 2:

Determination of the number of mole of NaOH produced by the reaction. This is illustrated below:

From the balanced equation above,

2 moles of H2O produced 2 moles of NaOH.

Therefore, 5 moles of H2O will also produce 5 moles of NaOH.

Step 3:

Conversion of 5 moles of NaOH to grams. This is illustrated below:

Number of mole of NaOH = 5 moles

Molar Mass of NaOH = 23 + 1 + 16 = 40g/mol

Mass of NaOH =?

Mass = number of mole x molar Mass

Mass of NaOH = 5 x 40

Mass of NaOH = 200g

6 0

3 years ago

Can someone plz help me? :(

Maslowich

Answer:

Its C and D I believe

Explanation:

3 0

3 years ago

Read 2 more answers

How do valence electrons relate to the chemical reactions of an element?

RoseWind [281]

Answer:

Explanation:

Valance electrons are loosely held electrons of an atom. They are involve in chemical reaction. Consider the example of metals such as group two metals. All these have two valance electrons. They needed six electrons to complete the octet or loses two valance electrons to get complete octet. Thus its easier to remove two electrons than getting six electrons. These metals remove two electrons and form cations.

Now consider the example of nonmetals such group sixteen. They needed two electrons to get complete octet or remove six electrons to get complete octet. Thus its easier for them to get two electrons and they form anion. When group two metals cation and group sixteen anions combine they form compound and chemical reaction occur.

Group two metals also combine with halogens. Two halogens atoms combine with one alkaline earth metal atom to cancel the charge and make compound neutral.

They react with oxygen and form oxide.

2Ba + O₂ → 2BaO

2Mg + O₂ → 2MgO

2Ca + O₂ → 2CaO

Oxygen carry -2 charge while Ca, Mg and Ba +2 and make the compound neutral because charges are equal in magnitude.

With sulfur,

Mg + S → MgS

Ca + S → CaS

Ba + S → BaS

Sulfer carry -2 charge while Ca, Mg and Ba +2 and make the compound neutral because charges are equal in magnitude.

3 0

4 years ago

I have my chemistry EOC tomorrow, and I need to know how to calculate the molar mass of a compound. Specifically ones set up lik

yuradex [85]

Answer:

357.475

Explanation:

First you need periodic table and you have to look for mass

Fe = 3 x 55.845 = 167.535

P = 2 x 30.97 = 61.94

o = 4 x 2 so 8 oxygen = 8 x 16 = 128

add all and you get 357.475

6 0

3 years ago

6. What is the pressure of 0.60 moles of a gas if its volume is 10.0 liters at 35.0°C?

denis-greek [22]

Answer: The pressure inside the cylinder will be 1.5 atm. The pressure can be calculated using the Ideal Gas Equation which relates the pressure, volume, temperature, and amount of gas to each other.

Further Explanation

The Ideal Gas Equation is:

$PV = nRT$

where:

P - pressure (in atm)

V - volume (in L)

n - amount of gas (in moles)

R - universal gas constant $0.08206 \frac{L-atm}{mol-K}$

T - temperature (in K)

In the problem, we are given the values:

P = ?

V = 10.0 L (3 significant figures)

n = 0.60 moles ( 2 significant figures)

T = 35.0 degrees Celsius (3 significant figures)

We need to convert the temperature to Kelvin before we can use the Ideal Gas Equation. The formula to convert from degree Celsius to Kelvin is:

$Temperature \ in \ Kelvin = Temperature\ in \ Celsius \ + \ 273.15$

Therefore, for this problem,

$Temperature\ in \ K = 35.0 +273.15\\Temperature\ in \ K = 308.15$

Solving for P using the Ideal Gas Equation:

$P = \frac{nRT}{V} \\P = \frac{(0.60\ mol) \ (0.08206 \ \frac{L-atm}{mol - K}) \ (308.15\ K) \ }{10.0 \ L} \\P = 1.51\ atm$

The least number of significant figures is 2, therefore, the final answer must have only 2 significant figures.

24 * All the following hormones help in the appearance of beard in the adult male,except​

24 * All the following hormones help in the appearance of beard in the adult male,except