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Jet001 [13]
3 years ago
10

Gerald's science teacher mixed room temperature samples of hydrochloric acid and sodium hydroxide in a large beaker. The solutio

n still looked clear like water, but when the students carefully touched the beaker one at a time, it felt warm to the touch.
Why did the beaker most likely feel warm?
Chemistry
2 answers:
kozerog [31]3 years ago
6 0
 <span>HCl is a strong acid and NaOH is a strong base, so mixing them together will produce a lot of heat. The products are salt or Sodium chloride (NaCl) and water (H2O). Since one is an acid and one is a base they will neutralize each other. I hope this helps</span>
Alchen [17]3 years ago
3 0

Answer:

The beaker feels warm because is an exothermic reaction

Explanation:

An exothermic reaction is one that releases energy, in this case, through heat. Then, when HCl, a strong acid, and NaOH, a strong base, are mixed together it is produced a salt and water with a release of energy. The reaction is expressed as:

HCl + NaOH ------> NaCl + HCl + Energy

This happens because the energy of the products is lower than the energy of the reactants.

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45 m. If each student needs 750 mm of tubing, the teacher should order 45 m of tubing.

a) Find the <em>length in millimetres</em>

Length = 60 students x (750 mm tubing/1 student) = 45 000 mm tubing

b) Convert <em>millimetres to metres </em>

Length = 45 000 mm tubing x (1 m tubing/1000 mm tubing) = 45 m tubing

6 0
2 years ago
How many electrons are in the highest occupied energy level of a neutral chlorine atom?
tino4ka555 [31]
There are seven electrons
5 0
2 years ago
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A student jumps of a sled toward the west after it stops at the bottom of an icy hill. Based on the law of action-reaction, in w
Delicious77 [7]

Answer:

East

Explanation:

Given Newton's third law of motion; "Action and reaction are equal and opposite", when a student jumps off a sled toward the west after it stops at the bottom of an icy hill, the sled will move in the East direction.

This is because, the force exerted on the sled is a reaction force and is opposite in direction to the force that thrusts the boy westward though equal in magnitude with the former.

3 0
2 years ago
Which letter corresponds with the location of f orbitals on the periodic table?
Lerok [7]

Answer:

The correct would be C i think :)

Explanation:

Stay postivie :)

8 0
3 years ago
Someone please help me!!!!
Artyom0805 [142]

Double replacement :

2Na₃PO₄+3CaCl₂⇒6NaCl + Ca₃(PO₄)₂

<h3>Further explanation</h3>

1. A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds

2. Double-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product

3. Combination/syntesis : 2 or more reactants combine to form a new compound

4. Decomposition : the reactant is decomposed into 2/more products

If we look at the reaction options available, all of them can be included in the double replacement reaction, but we only choose the reaction from Sodium phosphate and Calcium chloride which leads to options: C because it is balanced (from the number of atoms in the same reactant and product) and is in accordance with the chemical formula of each compound (both products and reactants)

3 0
3 years ago
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