All categories

3 years ago

Air is cooler at high altitudes than it is at low altitudes. O True O False

Chemistry

1 answer:

Anon25 [30]3 years ago

5 0

Answer:

true

Explanation:

the air is thinner as you climb

You might be interested in

What is the density of the black hole

Karolina [17]

the density of a black hole is 22.61 g/cm3 i think

7 0

3 years ago

Read 2 more answers

Fluorine (F) and bromine (Br) are in the same group on the periodic table. How do atoms of these elements compare when they form

mojhsa [17]

Answer is: Both a fluorine atom and a bromine atom gain one electron, and both atoms become stable.

Fluorine and bromine are in group 17 in Periodic table of elements. Group 17 (halogens) elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.

Halogens need to gain one electron to have electron cofiguration like next to it noble gas.

Fluorine has atomic number 9, it means it has 9 protons and 9 electrons.

Fluorine tends to have eight electrons in outer shell like neon (noble gas) and gains one electron in chemical reaction.

Electron configuration of fluorine: ₉F 1s² 2s² 2p⁵.

Electron configuration of neon: ₁₀Ne 1s² 2s² 2p⁶.

3 0

3 years ago

Read 2 more answers

Give an example of a change that would be a chemical change but not a physical change.

Annette [7]

Answer:

digesting food

Explanation:

you dont see it

4 0

3 years ago

Read 2 more answers

Part A How does a bicycle make work easier? VIDEO TELLS U NOTHING

Oksanka [162]

Because you don’t have to walk and riding a bike can make you go faster and it lets you get to where you need to go much more faster

8 0

3 years ago

I really need help it's urgent help ! Don't ignore it .Your work will be appreciated and don't spam

gtnhenbr [62]

ツ here your answer

$\huge\red{ \mid{\fbox{\tt{answer}}\mid}}$

A)Potassium bromide(aq) + Barium iodide(aq) → Potassium iodide(aq) + Barium bromide(s)

2KBr(aq)+BaI2(aq) → 2KI(aq)+BaBr2(s)

B)Balance the Chemical Equation for the reaction of calcium carbonate with hydrochloric acid:
CaCO3+ HCl -> CaCl2 + CO2 + H2O To balance chemical equations we need to look at each element individually on both sides of the equation. calcium carbonate is a chemical compound with the formula CaCO3.

Mark me in brainlist

8 0

3 years ago