Chemistry Middle School

I would appreciate your help! Due today! ( I don't know if this is even chemistry)

Answers

Answer 1

Answer:

6+69

Explanation:

Answer 2

this is the photo of the first page

Related Questions

Which metals are so reactive that they are never found as uncombined elements in nature?

A. alkaline earth metals

B. alkali metals

C. rare earth metals

D. transition metals

Answers

B

This element is rare and it reacts very quickly to other elements

Which material has the same state of matter after it is mixed with water as it did before it was mixed with water?

A.
carbon dioxide
B.
salt
C.
pepper
D.
sugar

Answers

A or C I’m not quite sure, pls correct me

Pepper has the same state of matter after it is mixed with water.

What is the state of matter?

State of matter of any substance tells about the physical appearance or the space occupied by the atoms of that substance.

From the given option; carbon dioxide, salt and sugar are soluble in water and changes their state of matter to liquid. But pepper is hydrophobic in nature that means it is not soluble in water, so present in the original state after mixing with water.

Hence, option (c) is correct i.e. pepper has the same state.

To learn more about state of matter, visit the below link:

https://brainly.com/question/16982523

Which group of elements has the highest boiling point? * IIIa (13) IIa (2) Ia (1) IVa (14) Transition metals

Answers

Answer:

the elements that have the highest boiling is transition metals

How many moles of Hg are in a thermometer that contains 0.055 mL of Hg?

Answers

Answer:

745.8

Explanation:

Answer:

745.8

Explanation:

I hope this helps, and correct I mostly guaranteed is correct.

Watch the video below. After the video use the text box to answer the following questions:

1. What is the difference between and autotroph and a heterotroph?

2. What is one example of an autotroph. One example of a heterotroph.

Please help the video isn't necessary for these questions :)

Answers

autotrophs are producers and they prepare their own food. heterotrophs are consumers that depend on other sources for their food.

autotroph ex. plants, algae, some types of bacteria

heterotroph ex. dogs, birds, all humans

^ , i argee with them .

What is one advantage of developing energy-efficient technologies?

Answers

Answer:

it's simple

Explanation:

For residential buildings, a whole-house approach using a cost-effectiveness criterion can result in savings of 50 percent or more in heating and cooling and 30–40 percent reductions in total energy use.

I hope you understand have a great day :3

One advantage of developing energy-efficient technologies, would be less waisted money on electricity.

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