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stira [4]
4 years ago
9

Two scientists are cutting samples of leaves for analysis. One scientist always clips a sample from the base of the leaf near th

e stem, and the other scientist always clips a sample from the tip of the leaf. This illustrates a
Chemistry
1 answer:
dmitriy555 [2]4 years ago
4 0
The answer would be A.Procedure error
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Obtain a box of breakfast cereal and read the list of ingredients. What are four chemicals from the list
FromTheMoon [43]

Options:

monoglycerides

cocamide DEA

folic acid

iron chromium ion

peroxide

lauryl glucoside

disodium phosphate

Answer and Explanation:

The added chemicals are:

  • monoglycerides
  • folic acid
  • iron
  • disodium phophates

Monoglycerides are fats added for flavour. Folic cid and iron are vitamins added for nutritional value. disodium phosphate is a food additive for enhancing flavour.

The remaining ingredients are organic based.

3 0
4 years ago
Is MgCO3 an base or acid
lilavasa [31]
Ammonia is a (Lewis) base. Ammonium hydroxide (not ammonia) is a base. Ammonium hydroxide: NH4OH (ammonia gas dissolved in water) Ammonia: NH3
8 0
3 years ago
C6H12O6 is the formula for a sugar molecule.molecules are classified as?
expeople1 [14]

Answer:

D-Glucose

Explanation:

8 0
2 years ago
Question :What's oxidation?<br>​
professor190 [17]

Answer:

The process or result of oxidizing or being oxidized.(Rust)

Explanation:

Pluto

6 0
3 years ago
What is the molar concentration of Pb+ in a solution that contains 6.73 ppm of
Katarina [22]

Answer:

2.03 × 10⁻⁵ M

Explanation:

Step 1: Given data

Concentration of Pb(NO₃)₂: 6.73 ppm = 6.73 mg/L

Step 2: Convert 6.73 mg/L to mol/L

The molar mass of 331.2 g/mol.

6.73 × 10⁻³ g/L × 1 mol/331.2 g = 2.03 × 10⁻⁵ mol/L = 2.03 × 10⁻⁵ M

Step 3: Calculate the molar concentration of Pb²⁺

Let's consider the ionization of Pb(NO₃)₂.

Pb(NO₃)₂(aq) ⇒ Pb²⁺(aq) + 2 NO₃⁻(aq)

The molar ratio of Pb(NO₃)₂ to Pb²⁺ is 1:1. The molar concentration of Pb²⁺ is 1/1 × 2.03 × 10⁻⁵ M = 2.03 × 10⁻⁵ M.

8 0
3 years ago
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