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Mashutka [201]
3 years ago
7

Which of the following is an example of a physical change?

Chemistry
1 answer:
dalvyx [7]3 years ago
7 0

Answer:

B! i just learned this last week lol!

Explanation:

hope this helps♡♡

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For the chemical equations shown below, label each reactant as either acid or base, and each product as either conjugate acid or
Veronika [31]
Acids are ionic compounds with hydrogen at the front. Bases are ionic compounds with hydroxide at three back(bronsted definition)
A conjugate acid is a base that has gained a proton(hydrogen ion) and a conjugate base is formed when an acid has given up its proton.
8 0
3 years ago
What does weight measure?
Pavel [41]

The unit of measurement for weight is that of force, which in the International System of Units (SI) is the newton. For example, an object with a mass of one kilogram has a weight of about 9.8 newtons on the surface of the Earth, and about one-sixth as much on the Moon.

7 0
4 years ago
A solution is prepared by dissolving sugar in water. The solution is 25.0%, by mass, sugar. How many grams of WATER are in 472 g
const2013 [10]
If the sugar makes up 25% of the solution, that means the water makes up 75%, or 3/4, of the solution.

Set up a proportion to solve:
\frac{3}{4} = \frac{x}{472}

Cross multiply:
4x = 1416
x = 354

Therefore, there are 354 grams of water in the solution.
3 0
3 years ago
Which of the following concerning solutions is/are correct? 1. The solvent in a mixture of gases is generally considered to be t
pshichka [43]

Answer: 1. The solvent in a mixture of gases is generally considered to be the substance in greater amount. 2. The solid dissolved in a solution is known as the solute. 3. Solid solutions are called alloys.

Explanation:

A binary solution is made up of two components ,called as solute and another as solvent.

A solute is defined as the component which is present in smaller proportion. It can be in solid, liquid or gaseous phase. A solvent is defined as the component which is present in larger proportion in a solution. It can be in solid, liquid or gaseous phase.

Usually in liquid solutions , solid acts as solute and liquid acts as solvent. For example: In salt solution, salt is the solute and water is the solvent.

Solid solutions contains solid as solute and solid as solvent. These are called as alloys. For example : In brass, zinc is the solute and copper is the solvent.

4 0
3 years ago
Define isotope of uranium ?​
Andreyy89

<h2>Isotopes of uranium</h2>

Uranium is a naturally occurring radioactive element that has no stable isotope. It has two primordial isotopes, uranium-238 and uranium-235, that have long half-lives and are found in appreciable quantity in the Earth's crust. The decay product uranium-234 is also found.

<h3 /><h3>SF: Spontaneous fission</h3>

6 0
3 years ago
Read 2 more answers
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