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3 years ago

Acid and an alkali combined together will give a salt,if they are mixed in the right amount

Chemistry

2 answers:

katrin [286]3 years ago

8 0

It will be neutral on the PH scale it will be the colour green, blood, and water are both neutral

algol133 years ago

3 0

A Neutralisation reaction, the alkali is neutralizing the acid.

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Which expression is a measurement of denisty

Ahat [919]

to calculate density you use the equation m/v. Divide the mass by the volume in order to get an object's density.

7 0

3 years ago

A sample of carbon dioxide gas collected at a pressure of 880 mm Hg and a temperature of 303 K has a mass of 26.9 g. The volume

trapecia [35]

Answer:

13.1dm³

Explanation:

Given parameters:

Pressure of gas = 880mmHg

760mmHg = 1 atm

880mmHg will give 1.16atm

Temperature = 303k

Mass of gas = 26.9g

Molar mass of CO₂ = 12 + 2(32) = 44g/mol

Number of moles = mass/molar mass = 26.9/44 = 0.61mole

Unknown:

Volume of the sample = ?

Solution:

To solve this problem, we use the ideal gas equation:

PV = nRT

P is the pressure

V is the volume

n is the number of moles

R is the gas constant = 0.082atmdm³mol⁻¹k⁻¹

T is the temperature

V = $\frac{nRT}{P}$ = $\frac{0.61 x 0.082 x 303}{1.16}$ = 13.1dm³

4 0

3 years ago

Where does oxidation occur in an electrochemical cell?

crimeas [40]

(3); try using the phrase "AN OX ate the RED CAT"
(anode=oxidation, reduction=cathode)

4 0

3 years ago

Read 2 more answers

Write a balanced net ionic equation for each of the following aqueous metathesis reactions. Classify each reaction as a neutrali

melamori03 [73]

Answer:

See explanation

Explanation:

A. This is a neutralization reaction.

Molecular equation;

HBr(aq) + CsOH(aq) ---------> CsBr(aq) + H20(l)

Complete ionic equation;

H^+(aq) + Br^-(aq) + Cs^(aq) + OH^-(aq) --------> Cs^+(aq) + Br^- + H20(l)

Net ionic equation;

H^+(aq) + OH^-(aq) --------> H20(l)

B. This is a gas forming reaction;

H2SO4(aq) + Na2CO3(aq) ------->Na2SO4(aq) + H2O(l) + CO2(g)

Complete ionic equation;

2H^+(aq) + SO4^-(aq) + 2Na^+(aq) + CO3^2-(aq) ------->2Na^+(aq) + SO4^-(aq) + H2O(l) + CO2(g)

Net ionic equation;

2H^+(aq) + CO3^2-(aq) -------> + H2O(l) + CO2(g)

C. This a precipitation reaction

Molecular equation;

CdCl2(aq) + Na2S(aq) ------->CdS(s) + 2NaCl(aq)

Complete ionic equation;

Cd^2+(aq) + 2Cl^-(aq) + 2Na^+(aq) + S^2-(aq) ---------> CdS(s) + 2Na^+(aq) + 2Cl^-(aq)

Net ionic equation;

Cd^2+(aq) + S^2-(aq) ---------> CdS(s)

8 0

3 years ago

To what temperature must a sample of nitrogen at 27°C and 0.625 atm be taken so that it’s pressure becomes 1.125 atm at constant

Karo-lina-s [1.5K]

Answer:

The sample of nitrogen must be taken to 267 $^{0}\textrm{C}$ .

Explanation:

Let's assume nitrogen gas behaves ideally.

Here amount of nitrogen gas in both states remain constant.

So, in accordance with combined gas law for a given amount of an ideal gas in two different states: $\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}$

where $P_{1}$ and $P_{2}$ are initial and final pressure respectively. $V_{1}$ and $V_{2}$ are initial and final volume respectively. $T_{1}$ and $T_{2}$ are initial and final temperature (in kelvin scale) respectively.