All categories

3 years ago

Question 2 (Mandatory) (2 points)

Chemistry

1 answer:

Deffense [45]3 years ago

4 0

Electrons have a positive charge is the right answer

You might be interested in

On the first day of school, a class of th-grade students are given tour identical cubes of hard clay. The cubes are placed in fo

matrenka [14]

Answer:

sample 4

Explanation:

6 0

3 years ago

Antacids work to relieve stomach acids because of which of the following types of reactions?

Anastaziya [24]

Answer: The correct answer is Option B.

Explanation:

Decomposition is a type of chemical reaction in which larger compound breaks down into two or more smaller compounds.

$AB\rightarrow A+B$

Double displacement reactions is defined as the chemical reaction in which exchange of ions takes place.

$AB+CD\rightarrow AD+CB$

Synthesis reaction is a type of reaction in which two or more smaller compounds combines to form a single large compound.

$A+B\rightarrow AB$

Single displacement reaction is a type of reaction in which a more reactive metal displaces a less reactive metal from its chemical reaction.

$A+BC\rightarrow AC+B$

In stomach, an acid is present known as hydrochloric acid and to neutralize its effect, antacid is taken which has $CaCO_$ as a component.

The reaction between HCl and $CaCO_3$ is a type of neutralization reaction and it is a type of double displacement reaction.

The equation between the two follows:

$CaCO_3+HCl\rightarrow CaCl_2+H_2O+CO_2$

Hence, the correct answer is Option B.

4 0

3 years ago

Determine the empirical formula of a

k0ka [10]

Answer:

AuCl

Explanation:

Given parameters:

Mass of Gold = 2.6444g

Mass of Chlorine = 0.476g

Unknown:

Empirical formula = ?

Solution:

Empirical formula is the simplest formula of a compound. Here is the way of determining this formula.

Elements Au Cl

Mass 2.6444 0.476

Molar mass 197 35.5

Number of moles 2.6444/197 0.476/35.5

0.013 0.013

Divide by the

smallest 0.013/0.013 0.013/0.013

1 1

The empirical formula of the compound is AuCl

3 0

3 years ago

You have discovered an element that is a poor conductor of electricity, has a low melting point, and is a gas at room temperatur

NeX [460]

AHHH ITS B SORRY I ACTUALLY KNOE THIS

6 0

3 years ago

A glucose solution has a density of 1.02 g/ml. what is its specific gravity

Makovka662 [10]

Answer is: specific gravity of glucose is 1,02.
d(glucose) = 1,02 g/ml.
d(water) = 1,00 g/ml.
Specific gravity of glucose = density of glucose ÷ density of water.
Specific gravity of glucose = 1,02 g/ml ÷ 1,00 g/ml.
Specific gravity of glucose = 1,02.
Specific gravity is the ratio of the density of a substance (in this case glucose) to the density of a reference substance (water).

4 0

3 years ago

Read 2 more answers