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kaheart [24]
2 years ago
10

What is BTB? What is it used for?​

Biology
1 answer:
katrin2010 [14]2 years ago
4 0

Answer:

Bromothymol blue

Explanation:

common use is for measuring the presence of carbonic acid in a liquid.

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Iron reacts with atmospheric oxygen to form iron oxide or ferric oxide. Look at the chemical equation for this reaction:
kondaur [170]

Answer:

4 Fe + 3 O₂ → 2 Fe₂O₃

Explanation:

Let's start with the oxygen.

Reactants - 2

Products - 3

What number do 2 and 3 have in common? 6.

Put a 3 in the reactants and a 2 in the products to balance the oxygen.

Fe + 3 O₂ → 2 Fe₂O₃

Now let's look at the iron.

Reactants - 1

Products - 4

Put a 4 in the reactants to balance the iron.

4 Fe + 3 O₂ → 2 Fe₂O₃

The equation is balanced. Hope that helps.

8 0
3 years ago
Digeorge syndrome is characterized by a cleft palate, immune deficiency, and developmental issues. which chromosomal change caus
Temka [501]

The correct answer is Deletion.

DiGeorge syndrome, more commonly considered as 22q11.2 deletion syndrome. It refers to an ailment resulting when a small segment of chromosome 22 is missing. This deletion leads to poor development of many systems of the body.

The medical issues generally associated with 22q11.2 deletion syndrome involve poor immune system function, heart defects, a cleft palate, delayed development with emotional and behavioral issues, and issues associated with diminished levels of calcium in the blood.


7 0
3 years ago
Read 2 more answers
Which of these is not an organic waste found in urine?
NNADVOKAT [17]
One organic waste that is not found in urine is called Bicarbonate Ions
7 0
2 years ago
HELP!! Rank the following forms of water from most common (1) to least common (4) on Earth.
uranmaximum [27]
  1. ocean and seas
  2. river and lakes
  3. glacier
  4. ground water.

d\b\c\a

8 0
2 years ago
QUESTION 50<br> Cohesion, surface tension, and adhesion are the properties of water molecules that
snow_lady [41]

Answer:

enable capillarity

Explanation:

It is well known that water tends to adhere to the walls of the vessel in which it is contained. This is due to the force of adhesion which is defined as the force of attraction between unlike molecules. Cohesion is defined as the force of attraction between like molecules. In the case of a plant, cohesion of water molecules in the xylem vessels prevents the water column from breaking. The forces of adhesion, surface tension and cohesion are the basis of capillarity,that is, the rise of liquids in capillary tubes.

8 0
3 years ago
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