Does a substance that heats up quickly have a high or a low specific heat capacity

A balloon contains 5L of oxygen at a pressure of 90 kPa. How much oxygen will the ballon contain if the pressure is lowered to 6

VLD [36.1K]

We have that all (ideal) gases obey the fundamental gas equation: PV=nRT where P is the Pressure, V is the Volume, n is the number of moles, R is a universal constant and T is the temperature in Kelvin. In this process, we have that both the number of moles and the temperature stays the same. So if we denote by i the initial conditions and by f the final conditions of the gas, we have: $P_{i} * V_{i}=nRT= P{f}*V{f}$ . Hence, if we solve for the final Volume we get: $V_{f} = \frac {V_{i}*P_{i} }{P_{f}}$ . Now we know all the other variables; substituting we get that the final volume is 6.7 L (6.716 L ).

3 0

3 years ago

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A solution contains 35 mL of 1.50M CuSO . What is the molarity when the new 4 volume is 100mL

elena-s [515]

Answer:

0.525 M CuSO

Explanation:

Molarity (M) is the units mol/L. Let's figure out how many moles of CuSO we have:

35 mL = 35/1000 L = 0.035 L

0.035 L * 1.50 mol/L = 0.0525 mol CuSO

Our new volume is 100 mL, so let's first convert this to L:

100 mL = 100/1000 L = 0.100 L

To find the new molarity, divide the number of moles (0.0525 moles) by the number of liters (0.100 L):

0.0525 mol / 0.100 L = 0.525 M CuSO

Hope this helps!

4 0

3 years ago

Chem<br> Equations<br> Balance and Classify each of the following equations into:<br> Combination reaction, Decomposition Reacti

Arlecino [84]

Answer :

(A) The balanced chemical reaction will be:

$2KBr(aq)+Cl_2(g)\rightarrow 2KCl(aq)+Br_2(l)$

This reaction is a single replacement reaction.

(B) The balanced chemical reaction will be:

This reaction is a double displacement reaction.

(C) The balanced chemical reaction will be:

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

This reaction is a combination reaction.

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of an element present on reactant side must be equal to the product side.

Part (A):

The balanced chemical reaction will be:

$2KBr(aq)+Cl_2(g)\rightarrow 2KCl(aq)+Br_2(l)$

This reaction is a single replacement reaction in which the most reactive element displaces the least reactive element from its solution.

Part (B):

The balanced chemical reaction will be:

$CaBr_2(aq)
+H_2SO_4(aq)\rightarrow CaSO_4(s)+2HBr(g)$

This reaction is a double displacement reaction in which a positive cation and a negative anion of two reactants exchange their places to form two new products.

Part (C):

The balanced chemical reaction will be:

$N_2(g)+3H_2(g)\rightarrow 2NH_3(g)$

This reaction is a combination reaction in which the two atoms combine to form a larger molecule.

3 0

3 years ago

How many kilograms of oxygen did Samantha need to utilize to react with 36.29 kg of triglycerides (C55H104O6)?

Paraphin [41]

Answer:

105.33Kg of O2.

Explanation:

Step 1:

The balanced equation for the reaction. This is given below:

C55H104O6 + 78O2 —> 55CO2 + 52H2O

Step 2:

Determination of the masses of C55H104O6 and O2 that reacted from the balanced equation.

This is illustrated below:

Molar mass of C55H104O6 = (12x55) + (104x1) + (16x6) = 860g/mol

Mass of C55H104O6 from the balanced equation = 1 x 860 = 860g.

Divide the mass of C55H104O6 by 1000 to express in kg i.e

Mass of C55H104O6 = 860/1000= 0.86Kg

Molar Mass of O2 = 16x2 = 32g/mol

Mass of O2 from the balanced equation = 78 x 32 = 2496g.

Divide the mass of O2 by 1000 to express in kg i.e

Mass of O2 = 2496/1000 = 2.496kg.

From the balanced equation above,

0.86kg of C55H104O6 reacted with 2.496Kg of O2.

Step 3:

Determination of the mass of O2 in kg needed to react with 36.29 kg of triglycerides (C55H104O6).

This can be obtained as follow:

From the balanced equation above,

0.86kg of C55H104O6 reacted with 2.496Kg of O2.

Therefore, 36.29 kg of C55H104O6 will react with = (36.29 x 2.496)/0.86 = 105.33Kg of O2.

Therefore, 105.33Kg of O2 is needed for the reaction.

5 0

2 years ago

IF U HAAD THEE RIGHHT ANSWERRR PLZZZ

kozerog [31]

Answer:A

Explanation: I’m pretty sure

8 0

2 years ago