What type of harmful bacteria did they feed the mice in the experiment?

With some value of mixture CO and O2 density by Hydrogen is 15 . When reaction begun some time later density by Hydrogen of the

liubo4ka [24]

For every 2 moles of CO and 1 mole of O2, 2 moles of CO2 will be produced.

The ratio is 2:1:2.

Hope this helps! :)

8 0

3 years ago

Can hydrobromic acid be a valid chemical formula?

EastWind [94]

Yes, it can - HBr is its chemical formula.
If you had other options though, then the one which wouldn't be a valid chemical formula is aluminum (III) chloride, because, since it only has one charge (+3), it is unnecessary to state it as III.

7 0

3 years ago

A scientist discovers a new substance. The molecules of the substance form hydrogen bonds with each other. When the molecules lo

wariber [46]

The answer is: It expands when it freezes.

When molecule frezes, it lose energy. When molecules are far apart, it means the volume is greater and it expands.

For example, ice expands when water is freezing.

Hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (H), covalently bound to a highly electronegative atom such as flourine (F), oxygen (O) and nitrogen (N) atoms.

6 0

3 years ago

How much H2O is produced when 20000 g of C2H2 burns completely? Answer in units of g.

IgorC [24]

Answer:

Explanation:

H = 1

C = 12

O = 16

Acetylene, HC≡CH = 2+24 = 26

H2O = 2 + 16 = 18

In XS oxygen, one HC≡CH yields one H2O

26 g HC≡CH ==> 18 g H2O

2000 g HC≡CH ==> 2000*18/26 g H2O = 1384.6154 g H2O

3 0

3 years ago

In each pair, choose the larger of the indicated quantities or state that the samples are equal:

romanna [79]

<u> There are more total ions in 2.2 moles of </u> $MgCl_2$

Ion, any atom or group of atoms that bears one or more positive or negative electrical charges. Positively charged ions are called cations; negatively charged ions, anions.

Ions are formed by the addition of electrons to, or the removal of electrons from, neutral atoms or molecules or other ions; by combination of ions with other particles; or by rupture of a covalent bond between two atoms in such a way that both of the electrons of the bond are left in association with one of the formerly bonded atoms.

Examples of these processes include the reaction of a sodium atom with a chlorine atom to form a sodium cation and a chloride anion; the addition of a hydrogen cation to an ammonia molecule to form an ammonium cation; and the dissociation of a water molecule to form a hydrogen cation and a hydroxide anion.

Learn more about ions

brainly.com/question/13692734

#SPJ4

8 0

1 year ago