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3 years ago

What is the name of the first state

Chemistry

1 answer:

irina1246 [14]3 years ago

8 0

Answer:

Delaware

Explanation:

Delaware was the first state to ratify the United States Constitution in 1787. There is only one First State and Delaware is it.

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According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas?

MakcuM [25]

Answer:

The motion of the gas particles is random and in a straight-line. A sample of gas is contained in a closed rigid cylinder.

I hope this helps you if not soo advance sorry :)

3 0

3 years ago

Why do scientists use models? a. Models make some things easier to understand. b.Measurements can be made only on models. c. Mod

mina [271]

In science, a model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central to what scientists do, both in their research as well as when communicating their explanations.

So your answer would be

C) Models help scientists visualize things they can’t see.

8 0

3 years ago

Read 2 more answers

Based on the reactivities of the elements involved, which reaction will form products that are more stable than the reactants?

LUCKY_DIMON [66]

Answer: The correct option is B.

Explanation: All the given reactions are a type of single displacement reactions.

Single displacement reactions are defined as the reactions in which a more reactive metal displaces a less reactive metal in a chemical reaction.

General equation for these reactions is:

$AB+C\rightarrow CB+A$

For the given reactions, we will use the reactivity series. The metal which lies above in the reactivity series will easily displace the metal which lies below in the reactivity series.

Option A: For this reaction, zinc lies below aluminium in the reactivity series. Hence, zinc will not be able to displace aluminium in the chemical reaction.

Option B: For this reaction, Sodium is more reactive than calcium as it lies above in the reactivity series. Hence, sodium will easily displace calcium in the given chemical reaction.

Reaction follows:

$CaBr_2+2Na\rightarrow 2NaBr+Ca$

Option C: For this reaction, hydrogen lies below magnesium in the reactivity series. Hence, hydrogen will not be able to displace magnesium in the chemical reaction.

Option D: For this reaction, Calcium lies below barium in the reactivity series. Hence, calcium will not be able to displace barium in the chemical reaction.

Option E: For this reaction, barium lies below lithium in the reactivity series. Hence, barium will not be able to displace lithium in the chemical reaction.

Reactivity series is attached below.

3 0

4 years ago

Read 2 more answers

Hydrogen sulfide gas is reacted with dioxygen gas to produce gaseous sulfur dioxide and water. True or false?.

wel

Hydrogen sulfide gas is reacted with dioxygen gas to produce gaseous sulfur dioxide and water. It is false.

When hydrogen sulfide gas reacts with dioxygen gas, it produces water and solid Sulphur and not gaseous sulfur. The chemical equation of the given substances is :

2H2S + O2 → 2S + 2H20

It is a redox reaction as both Oxidation and reduction happens in it. Oxidation of hydrogen sulphur to sulphur happens and reductions of oxygen to water takes place.

if you need to learn more about chemical reaction of Hydrogen sulfide gas, click here

brainly.com/question/15842521?referrer=searchResults

#SPJ4

4 0

2 years ago

a) Diamond and graphite are two different forms of pure elemental carbon with densities of 3.51 g/cc and 2.25 g/cc respectively.

dybincka [34]

Density can be calculated using the following rule:
density = mass / volume
Therefore,
volume = mass / density

For diamond:
we have mass = 0.5 grams and density = 3.51 g / cm^3
Substituting in the rule, we can calculate the volume of diamond as follows:
volume = 0.5 / 3.51 = 0.14245 cm^3

For graphite:
we have mass = 0.5 grams and density = 2.25 g / cm^3
Substituting in the rule, we can calculate the volume of graphite as follows:
volume = 0.5 / 2.25 = 0.2223 cm^3

8 0

3 years ago

What is the name of the first state​

What is the name of the first state