Answer:
Air pollution like sulfur dioxide and nitrogen oxides can cause respiratory diseases, or can make these diseases worse. Respiratory diseases like asthma or chronic bronchitis make it hard for people to breathe.
Answer:
1st one
Explanation:
mark brainliest please
explain why the sun appers to be the brightest star in the sky. relate your explanation with an example such as street lights. this is science
Answer:
The sun is a star but It is the brightest in the sky because it is the closest star to earth.
I don't know how to compare it to street lights though...
Explanation:
Describe the structure of an atom. Be sure to include the terms nucleus, electron cloud, protons, neutrons, and electrons in your description
Answer:
The answer would be A because inside of an atom is protons and neutrons. Protons are + neutrons are neutral and electrons are -. The electron cloud is big not small.
Explanation:
Hope this helps, have a great day. God Bless you.
Fill in the blank
The (blank) of a rock is a result of its mineral composition.
I REALLY NEED HELP ITS DUE AT 11:59 PM
Answer:
I attached a photo of balanced equations but thats as much as I can help.
Explanation:
The most useful property of metalloids is their _____.
A. stored energy which is released through combustion
B. being non-reactive with other elements
C. value when used to make precious jewelry
D. varying ability to conduct electricity
Answer:
DDDDDDDDDDDDDDDDDDExplanation:
i just answer this it's corect trust meeeA tool might be made of an alloy because the alloy _____.
A. occurs naturally
B. resists rust
C. can bend easily
D. is softer
Your answer is:
B. Resists rust.
A tool might be made of an alloy because the alloy resists rust.
Why?
Iron is a great building material but steel (an alloy made by adding small amounts of non-metallic carbon to iron) is stronger, harder, and rustproof. Aluminum is a very light metal but it's also very soft in its pure form.
Alloy steels have a wide range of special properties, such as hardness, toughness, corrosion resistance, magnetizability, and ductility. Nonferrous alloys, mainly copper–nickel, bronze, and aluminum alloys, are much used in the coinage.
____________________________________________________________
Hope this helps!
⊕If this answer does not answer your question or displeases you, tell me in the comments and I will try to find the right answer and replace it ASAP. Thank you.⊕
Have a good day.I would appreciate your help! Due today! ( I don't know if this is even chemistry)
Answer:
6+69
Explanation:
What are characteristics of transition metals? Select all that apply. *
usually liquid or gas at room temperature
good conductors of heat and electricity
malleable
high density
Answer:
They are good conductors of heat and electricity
and have high density
Explanation:
transition metals are not usually liquid
What is one advantage of developing energy-efficient technologies?
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
Please help!
Geologists determine the hardness of a mineral using the Mohs scale of hardness. Why is it important for geologists to be able to do these tests in the field?
Answer:
To help determine what type of rock it is
Explanation:
Geologists can use information such as color, hardness, grain size, texture and other aspects of the rock to figure out the classification of a rock. for example, a light blue rock with no visible grain that is translucent and has a hardness of 9 is most likely going to be a saphire. hope this helps!!!!
Why are lysosomes important?
When a cell is beyond repair, lysosomes help it to self-destruct in a process called apoptosis.
Answer: A lysosome is a membrane-bound cell organelle that contains digestive enzymes soooo. They break down excess or worn out cell parts, they may be used to destroy invading viruses and bacteria. If the cell is damaged beyond repair, lysosomes can help it to self-destruct in a process called programmed cell death, or apoptosis.
Explanation: So that's why it is important
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
Which of these can be combined to make a mixture?
a. solid and a liquid
b. two solids
c. two liquids
Answer:
c
Explanation:
you cant mix a rock and a rock together and expect to get a mixture
and you cant mix a rock and water and expect them to mix
so its on logical that it is two liquids
Offspring, or young, ______ to look like their parents, but are ___ the ________.
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Answer:
Tend. Similar. Parents. (sorry if it's wrong. It's kinda confusing on the last 2 words. Make it more clearer pls to get a better answer)
Explanation:
Which of the following is a metal?
A. nitrogen
B. calcium
C. sulfur
D. carbon
Answer: Calcium
Explanation: The chemical element Calcium (Ca), atomic number 20, is the fifth element and the third most abundant metal in the earth's crust. The metal is trimorphic, harder than sodium, but softer than aluminium.
Hope this helps. pls mark me brainliest :)
How many moles of Hg are in a thermometer that contains 0.055 mL of Hg?
Answer:
745.8
Explanation:
Answer:
745.8
Explanation:
I hope this helps, and correct I mostly guaranteed is correct.
If an atom does not bond to another, The number of electrons does not change. True or false?
Please help!
(Subject is actually 8th Grade Science But The don't have that... i'm sorry.)
Question:
If you have two objects with different masses about to fall from the same height. Which one will have the greatest potential energy?
Group of answer choices:
A.) Smallest
B.) Largest
C.) Roundest
D.) Flattest
Answer:
I am Going to say the smallest im in 8th grade and i got that right
Explanation:
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
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
The density of Mg is 1.74g/cm3. The density of strontium is 2.60g/cm3. What would you expect the density of Ca to be?
Answer:
1.61 g/cm³.
Explanation:
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 :)
Which group of elements has the highest boiling point? * IIIa (13) IIa (2) Ia (1) IVa (14) Transition metals
Answer:
the elements that have the highest boiling is transition metals
HELP ME PLEASE
T-T thanks
Answer: You Would have to .
Explanation:
