All categories

4 years ago

What is H2 + F2 = HF

Chemistry

2 answers:

Mashutka [201]4 years ago

7 0

Answer:H2 + F2 → 2HF

Hydrogen react with fluorine to produce hydrogen fluoride.

den301095 [7]4 years ago

5 0

Answer: H2 + F2 → 2HF
Hydrogen react with fluorine to produce hydrogen fluoride.

You might be interested in

How many moles of methane are required to produce 22g co2 after combustion

Korvikt [17]

(Not guaranteed correct answer)
Balanced equation for complete combustion of methane would be:
CH4 + 2O2 --> CO2 + 2H20

Amount of CO2:
22g / [12.0+2(16.0)]
= 0.5mol

Mole ratio can be represented as
CH4 = CO2

So 0.5 mol of CO2 = 0.5 mol of CH4 ??

8 0

4 years ago

HELP PLEASE ITS JUST MULTIPLE CHOICE

morpeh [17]

Answer:

Atoms are indivisible

I had a hard time finding this out.

Explanation: Dalton's atomic theory was the first complete attempt to describe all matter in terms of atoms and their properties. Dalton based his theory on the law of conservation of mass and the law of constant composition. The first part of his theory states that all matter is made of atoms, which are indivisible.

6 0

3 years ago

41.6 mL of an HCIO2 solution were

WINSTONCH [101]

Answer:

0.0521 M

Explanation:

HClO2 + NaOH ---> NaClO2 + H2O

M(HClO2)V(HClO2) = M(NaOH)V(NaOH)

M(HClO2)*41.6 mL = 0.146 M*14.85 mL

M(HClO2) = 0.146*14.85/41.6 M = 0.0521 M

8 0

3 years ago

Maggie is solving a chemistry riddle her clue is to take the number of valence electrons in halogens and subtract it by the numb

Novay_Z [31]

The answer to the riddle Maggie is solving is 6

To determine the answer to the riddle Maggie is solving,

We will subtract the number of valence electrons in halogens by the number of valence electrons in alkali metals.

First, let us define what is meant by valence electrons

Valence electrons are those electrons that reside in the outermost shell surrounding an atomic nucleus.

Now, we will the determine the respective number of valence electrons in halogens as well as the number of valence electrons in alkali metals.

For Halogens

Halogens are the group 17 (group 7A) elements in the periodic table. Examples are Fluorine, Chlorine, Bromine etc.

Halogens have 7 electrons in their outermost shell

For Alkali metals

Alkali metals are the group 1 metals. Examples are Lithium, Sodium, Potassium etc.

Alkali metals have 1 electron in their outermost shell

Now, for the answer to the riddle,

Answer to the riddle = Number of valence electrons in halogens - Number of valence electrons in Alkali metals

Answer to the riddle = 7 - 1

∴ Answer to the riddle = 6

Hence, the answer to the riddle Maggie is solving is 6

Learn more here: brainly.com/question/9392364

6 0

3 years ago

If you wanna get oil to 180 celcius when it starts at 20 how many units of thermal energy is needed?

Zarrin [17]

Answer:

The thermal energy (heat) needed, to raise the temperature of oil of mass 'm' kilogram and specific heat capacity 'c' from 20°C to 180°C is 160·m·c joules

Explanation:

The heat capacity, 'C', of a substance is the heat change, ΔQ, required by a given mass, 'm', of the substance to produce a unit temperature change, ΔT

∴ C = ΔQ/ΔT

ΔQ = C × ΔT

C = m × c

Where;

c = The specific heat capacity

ΔT = The temperature change = T₂ - T₁

∴ ΔQ = m × c × ΔT

Therefore, the thermal energy (heat) needed, ΔQ, to raise the temperature of oil of mass 'm' kilogram and specific heat capacity, 'c' from 20°C to 180°C is given as follows;

ΔQ = m × c × (180° - 20°) = 160° × m·c

ΔQ = 160·m·c joules

7 0

3 years ago