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3 years ago

Which type of chemical reaction occurs in Ca+CI2 CaCI2

Chemistry

1 answer:

dimaraw [331]3 years ago

3 0

Ca + Cl2 = CaCl₂

A synthesis <span>reaction.</span>

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P4O10(s) = -3110 kJ/mol H2O(l) = -286 kJ/mol H3PO4(s) = -1279 kJ/mol Calculate the change in enthalpy for the following process:

mash [69]

Answer:

-290KJ/mol

Explanation:

ΔHrxn = ΔHproduct - ΔHreactant

ΔHrxn= 4ΔHH3PO4 - {6ΔHH2O + ΔHP4O10}

ΔHrxn = 4(-1279) - [6(-286) - 3110]

= -5116 -(-1716-3110)

= -5116-(-4826)

= -5116 + 4826 = -290KJ/mol

6 0

3 years ago

What mass of f2 is needed to produce 120. g of pf3 if the reaction has a 78.1% yield?

lesya692 [45]

write the equation for the reaction

that is 6 F2 +P4 =4 PF3

find the theoretical mass that is

let the theoretical yield be represented by y

theoretical yield = 78.1/100 = 120/y

y= 153.6 grams

find the number of moles of PF3

moles = mass/molar mass

= 153.6/87.97 =1.746 moles

by use of mole ratio between F2 :PF3 which is 6:4 the moles of F2 is therefore= 1.746 x 6/4 = 2.62 moles

mass = moles x molar mass

= 1.746 moles x38 g/mol = 99.6 grams

6 0

3 years ago

2. Fluorine gas exerts a pressure of 1.2 atm. When the

Mariana [72]

Answer:

look at the photo........................

6 0

2 years ago

2a. Density is the relationship between mass and volume. Density has

Charra [1.4K]

The volume of copper : 3.24 ml

<h3>Further explanation </h3>

Density is a quantity derived from the mass and volume

Density is the ratio of mass per unit volume

With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of mass

The unit of density can be expressed in g/cm³ or kg/m³

Density formula:

$\large{\boxed {\bold {\rho~=~ \frac {m} {V}}}}$

ρ = density , g/cm³ or kg/m³

m = mass , g or kg

v = volume , cm³ or m³

A common example is the water density of 1 gr / cm³

The density of copper : 8.96 gr/ml

mass of copper : 29 g

then the volume :

$\tt V=\dfrac{m}{\rho}\\\\V=\dfrac{29~g}{8.96~g/ml}\\\\V=\boxed{\bold{3.24~ml~or~3.24~cm^3}}$

8 0

3 years ago

chemical properties a. include changes of state of a substance b. include mass and color c. include changes that alter the ident

8_murik_8 [283]

C. Include changes that alter the identity of a substance.

6 0

3 years ago