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AnnZ [28]
3 years ago
7

HURRY DONT HAVE MUCH TIME LEFT. Vegetarians do not eat animal products but rather derive their protein from plant sources. Which

type of protein do vegetarian food sources lack?
Chemistry
1 answer:
Leokris [45]3 years ago
5 0

Answer:

b12 and d3

Explanation:

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You wish to prepare 250.0250.0 mL of a 400.0400.0 ppm w/v Fe2+Fe2+ ( MW=55.845 g/molMW=55.845 g/mol ) solution. How many grams o
tresset_1 [31]

Answer:

You need 0.702g of ferrous ammonium sulfate hexahydrate to prepare the desired solution.

Explanation:

First, you want to prepare 250.0mL of a 400.0ppm of Fe²⁺ (That is mg/L, w/v):

0.250L * (400mg / L) = 100mg Fe²⁺ = 0.1g Fe²⁺

Molar mass of Fe is 55.845g. moles are:

0.1g Fe²⁺ * (1mol / 55.845g) =

<h3>1.79x10⁻³ moles Fe²⁺</h3>

The Fe²⁺ comes from ferrous ammonium sulfate hexahydrate, as 1 mole of this salt contains 1 mole of Fe²⁺, moles of the salt you need are:

1.79x10⁻³ moles Fe(NH₄)₂(SO₄)₂.6H₂O.

To convert these moles to grams you must use molar weight, MW, thus:

1.79x10⁻³ moles Fe(NH₄)₂(SO₄)₂.6H₂O * (392.14g / 1mol) =

<h3>You need 0.702g of ferrous ammonium sulfate hexahydrate to prepare the desired solution.</h3>
3 0
3 years ago
_______________ is when a compound containing carbon and hydrogen (and sometimes oxygen) combines with oxygen gas to produce car
kotykmax [81]

Answer:

C. Combustion

Explanation:

Combustion- an organic compound containing carbon, hydrogen and sometimes oxygen reacts  with oxygen gas to form carbon dioxide and water.

4 0
4 years ago
Which of the following is a correct formula unit? PbCl AlP Li3Al ClO
zavuch27 [327]

Answer:  AIP  

There are two types of substances mixture and pure substance. Mixture has NO chemical formula and a pure substance has a chemical formula. There are two types of pure substances, elements (mono atomic and molecular) and compounds ( covalent and ionic).  

Ionic compounds do not exist in independent molecular form. They form three dimensional crystal lattice, in which each ion is surrounded by oppositely charged ion.  so the ratio of ion is called the formula unit  


3 0
4 years ago
Read 2 more answers
Today is a historic day! Why? Write a paragraph.
alekssr [168]

Answer:

JOE BIDEN GOT ELECTED

Explanation:

3 0
3 years ago
Read 2 more answers
IF ANSWER I WILL GIVE BRAINLESS
vovikov84 [41]

Answer:

Answer 9 - 100 joules energy was at the producer level

Answer 10 - Remaining energy is used in metabolism

Explanation:

Answer 9

The energy at each trophic level is only 10% of the energy at its previous trophic level.

The energy at producer level is X

10 % of X = 10 Joules

\frac{10}{100} * X = 10\\X = 100Joules

Answer 10

Because the remaining 90% energy is utilized by the producer for its metabolism

3 0
3 years ago
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