Which one of the following is an alkane? A. C2H4 B. C5H10 C. C3H8 D. C4H6

Calculate the volume of a liquid with a density of 5.45 g/mL and a mass of 65 g

avanturin [10]

The equation to calculate Density is Mass / Volume. You are given that the density is 5.45 and the mass is 65; 5.45 = 65 / v. So v = 65 / 5.45; v = 11.93 mL (or if you want your answer to consider significant figures, v = 12 mL).

6 0

3 years ago

You must answer all questions to get credit for this assignment. Use the notes above and/or the textbook to help you find the an

Allisa [31]

Explanation:

(1). It is known that in a reaction equation, reactants are placed or written on left hand side and products are written on the right hand side.

For example, $N_{2} + 3H_{2} \rightarrow 2NH_{3}$

Hence, in a reaction equation you start with the reactants and end up with the products.

(2). The number of atoms in a reaction will remain the same because according to the law of conservation of mass, mass of reactants will be equal to the mass of products.

Therefore, number of atoms on the reactant side will be equal to the number of atoms on product side.

7 0

3 years ago

What is a single celled orginium able to do

vichka [17]

Many life forms consist of a single cell. As well as simple bacteria, there are more complex organisms, known as protoctists. Unlike bacteria, they have complex internal structures, such as nuclei containing organized strands of genetic material called chromosomes. Most are single-celled, but some form colonies, with each cell usually remaining self-sufficient.

4 0

3 years ago

Notice that "SO4" appears in two different places in this chemical equation. SO42− is a polyatomic ion called "sulfate." What nu

vichka [17]

Answer:

3.

Explanation:

Hello,

In this case, it is convenient to write the chemical reaction as:

$CaSO_4+AlCl_3\rightarrow CaCl_2+Al_2(SO_4)_3$

Which balanced turns out:

$3CaSO_4+2AlCl_3\rightarrow 3CaCl_2+Al_2(SO_4)_3$

Thus the number that should be in front of the calcium sulfate is 3 in order to balance the reaction.

Best regards.

8 0

2 years ago

How did the surface area of the metal strip expose to the solution affect the

frez [133]

Answer:

See explanation below

Explanation:

In an electrochemical cell, electricity is obtained by the gradual deterioration of the anode.

Hence, surface area of the metal will affect the length of time within which the electrochemical cell works.

The greater the surface area of the metal, the longer the electrochemical cell can function and the greater the quantity of electricity produced, hence the answer above.

3 0

2 years ago