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2 years ago

How might a chef use chemistry?

Chemistry

1 answer:

lesya692 [45]2 years ago

6 0

Answer:

A. Chemistry can help a chef understand how to combine different ingredients in a recipe.

Explanation:

Knowing the chemical reactions between ingredients used in cooking helps chefs understand how well different ingredients would react to eachother.

*Im pretty sure this is correct.

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I NEED HELP ASAP!!!

Rus_ich [418]

Explanation:

To answer this question, we'll need to use the Ideal Gas Law:

where

is pressure,

is volume,

is the number of moles

is the gas constant, and

is temperature in Kelvin.

The question already gives us the values for

and

, because helium is at STP. This means that temperature is

273.15 K

and pressure is

1 atm

We also already know the gas constant. In our case, we'll use the value of

0.08206 L atm/K mol

since these units fit the units of our given values the best.

We can find the value for

by dividing the mass of helium gas by its molar mass:

number of moles

mass of sample

molar mass

6.00 g

4.00 g/mol

1.50 mol

Now, we can just plug all of these values in and solve for

1.50 mol

0.08206 L atm/K mol

273.15 K

1 atm

= 33.6 L

this is not the answer but it will help you

do by the formula it is on the answer

3 0

2 years ago

You will analyze four substances in this lab. Based on their chemical formulas and what you already know about covalent and ioni

Phoenix [80]

Answer: Oil: covalent

Cornstarch: Covalent

Sodium chloride: Ionic

Sodium bicarbonate: Ionic

Explanation: Covalent compounds are formed by sharing of electrons between non metals whereas ionic compounds are formed by transfer of electrons from metals to non metals.

1. Oil, which is built from the nonmetals hydrogen, carbon, and oxygen: forms a covalent compound by sharing of electrons between non metals hydrogen, carbon, and oxygen. Covalent compounds are insoluble in water.

2. Cornstarch, a carbohydrate consisting of hydrogen, carbon, and oxygen: forms a covalent compound by sharing of electrons between non metals hydrogen, carbon, and oxygen. Covalent compounds are insoluble in water.

3. Sodium chloride (table salt), whose formula is NaCl is formed by transfer of electrons from sodium to chlorine.Ionic compounds are soluble in water.

4. Sodium bicarbonate, whose formula is $NaHCO_3$ is formed by transfer of electrons from sodium to $HCO_3$ .Ionic compounds are soluble in water.

7 0

2 years ago

Read 2 more answers

. In a separate experiment, the molar mass of nicotine is found to be somewhere between 150 and 180 g/mol. Calculate the molar m

stealth61 [152]

Answer:

Explanation:

The question is incomplete. The complete question includes the information to find the empirical formula of nicotine:

<em>Nicotine has the formula </em> $C_xH_yN_z$ <em> . To determine its composition, a sample is burned in excess oxygen, producing the following results:</em>

<em>1.0 mol of CO₂</em>

<em>0.70 mol of H₂O</em>

<em>0.20 mol of NO₂</em>

<em>Assume that all the atoms in nicotine are present as products </em>

<h2>Solution</h2>

To find the empirical formula you need to find the moles of C, H, and N in each of the compound.

1.0 mol of CO₂ has 1.0 mol of C

0.70 mol of H₂O has 1.4 mol of H

0.20 mol of NO₂ has 0.20 mol of N

Thus, the ratio of moles is:

C: 1.0

H: 1.4

N: 0.20

Divide all by the smallest number: 0.20

C: 1.0 / 0.20 = 5

H: 1.4 / 0.20 = 7

N: 0.20 / 0.20 = 1

Hence, the empirical formula is C₅H₇N

Find the mass of 1 mole of units of the empirical formula:

C: 5mol × 12g/mol = 60g

H: 7mol × 1g/mol = 7 g

N: 1 mol × 14g/mol = 14g

Total mass = 60g + 7g + 14g = 81g

Two moles of units of the empirical formula weighs 2 × 81g = 162g and three units weighs 3 × 81g = 243 g.

Thus, since the molar mass is between 150 and 180 g/mol, the correct molar mass is 162g/mol and the molecular formula is twice the empirical formula: C₁₀H₁₄N₂.

5 0

2 years ago

HELP AGAIN PLSS:

murzikaleks [220]

This is true

Because when water evaporates molecules break and separate into different atoms

4 0

2 years ago

What is the empirical formula? A compound is used to treat iron deficiency in people. It contains 36.76% iron, 21.11% sulfur, an

Mandarinka [93]

Answer: The empirical formula of the compound is $Fe_1S_1O_4$