Ask question

Ask question

All categories

Natasha_Volkova [10]

3 years ago

8

You buy butter $3.31 a pound one portion of onion compote requires 1.7 oz of butter how much does the butter for one portion cos

t round to the nearest cent

1 answer:

Lorico [155]3 years ago

5 0

Answer:

The butter for one portion cost is $0.35.

Explanation:

You might be interested in

If 25.0 ml of seawater has a mass of 25.895 g and contains 1.295 g of solute, what is the mass/mass percent concentration of sol

Romashka-Z-Leto [24]

The % mass/mass concentration of solute in the seawater sample is calculated as below

% mass = mass of the solute /mass of the solvent(sea water) x100
mass of the solute =1.295 g
mass of the solvent(sea water_) = 25.895 g

there the % mass = 1.295/25.895 x100 = 5.001 %

8 0

3 years ago

Mercury(II) oxide (HgO) decomposes to form mercury (Hg) and oxygen (O2). The balanced chemical equation is shown below. 2HgO Rig

BigorU [14]

Taking into account the reaction stoichiometry, the correct answer is the third option: 15.63 moles of HgO are needed to produce 250 g of O₂.

In first place, the balanced reaction is:

2 HgO → 2 Hg + O₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

HgO: 2 moles
Hg: 2 moles
O₂: 1 moles

The molar mass of the compounds is:

HgO: 216.59 g/mole
Hg: 200.59 g/mole
O₂: 32 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

HgO: 2 moles× 216.59 g/mole= 433.18 grams
Hg: 2 moles× 200.59 g/mole= 401.18 grams
O₂: 1 mole× 32 g/mole= 32 grams

Then the following rule of three can be applied: if by reaction stoichiometry 32 grams of O₂ are produced by 2 moles of HgO, 250 grams of O₂ are produced from how many moles of HgO?

$moles of HgO=\frac{250 grams of O_{2} x2 moles of HgO}{32grams of O_{2}}$

<u><em>moles of HgO= 15.625 moles≅ 15.63 moles</em></u>

Finally, the correct answer is the third option: 15.63 moles of HgO are needed to produce 250 g of O₂.

Learn more about reaction stoichiometry:

5 0

3 years ago

Which type of decay has the greatest mass?

iVinArrow [24]

The type of decay which has the greatest mass is the alpha decay. An unstable nucleus loses the most mass if the nucleus emits an alpha particle. This type of decay has the largest mass among the radioactive decay. When this particle is emitted from a nucleus, it loses two protons and two neutrons therefore large amount of mass is lost.

6 0

4 years ago

#7) The atom on the left (pink) in the video is shown in the diagram below. From

ruslelena [56]

Answer:

A

Explanation:

Remember the number of valence electrons represent the group number. As shown in figure, there is only one electron in the valence shell. Therefore, this element belongs to group 1 elements also called as Alkali metals.

Furthermore, the number of electrons in a neutral atom equals number of protons. Hence, there are 11 protons in this element.

Also, number of protons equal atomic number therefore, the atomic number of this element is 11. And, by checking periodic table, the element having atomic number 11 is Sodium (Na).

6 0

3 years ago

Which type of fire should never be put out with water?

mihalych1998 [28]

Answer:

grease fire. The others are solids that will easily be put out with water.

8 0

3 years ago

Read 2 more answers