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4 years ago

Does anyone know a website where it solves me these types of problems OR if someone can help me with them?

Chemistry

1 answer:

Brut [27]4 years ago

7 0

Answer:

you can use the idea of molecular masses to calculate easily

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Write the formulas for the following ionic compounds: (a) copper bromide (containing the Cu+ ion), (b) manganese oxide (containi

ivann1987 [24]

Answer:The formulas of ionic compounds are:

a) $CuBr$

b) $Mn_2O_3$

c) $Hg_2I_2$

d) $Mg_3(PO_4)_2$

Explanation:

Formulas for the an ionic compounds is determine by:

Criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

(a) Copper bromide :Given that it contains $Cu^+$ ion.

$Cu^++Br^-\rightarrow CuBr$

(b) Manganese oxide : Given that it contains $Mn^{3+}$ ion.

$Mn^{3+}+O^{2-}\rightarrow Mn_2O_3$

(c)Mercury iodide :Given that it contains $Hg_2^{2+}$

$Hg_2^{2+}+I^-\rightarrow Hg_2I_2$

(d) Magnesium phosphate :Given that it contains $PO_4^{3-}$

$Mg^{2+}+PO_4^{3-}\rightarrow Mg_3(PO_4)_2$

4 0

3 years ago

Chemistry help! Thanks to anyone who helps!

zmey [24]

A: 2-methyl-2-propanom

5 0

3 years ago

When the energy is removed what will happen to a gas?

creativ13 [48]

Answer:

Hey mate 
I hope it helps

Explanation:

<h3>Removing Energy: Removing energy will cause the particles in a liquid to begin locking into place. A. Boiling and Evaporation: Evaporation is the change of a substance from a liquid to a gas. Boiling is the change of a liquid to a vapor, or gas, throughout the liquid.</h3>

<h2>PLZ MARK ME AS BRAIN LIST </h2>

THANKS 

8 0

3 years ago

Read 2 more answers

A 27.40 g sample of liquid mercury is initially at 158.30°C. If the sample is heated at constant pressure ( = 1 atm), kJ of ener

inna [77]

Answer:

energy required is 0.247kJ

Explanation:

The formula to use is Energy = nRdT;

Where n is number of mole

R is the molar gas constant

dT is the change in temperature

n = reacting mass of mercury / molar mass of mercury = 27.4/200.59 = 0.137

dT = final temperature - initial temperature = 376.20 - 158.30 = 217.90K

R = 8.314Jper mol per Kelvin

Energy = 0.137 x 8.314 x 217.90 = 247.12J

Energy in kJ= 247.12/1000= 0.247kJ

8 0

3 years ago

BRAINLIEST, 5 STARS, AND THANKS!!! tapos na po ako Dyan katapos kulang ma answer

mezya [45]

Answer:

before

1. Prepare a handy emergency supply kit

2. Know the earthquake hazard in your area

3. Familiarize yourself with the exit routes

During

1. Do the DUCK, COVER AND HOLD.

2. stay away from trees and posts.

3. stay clam

4. Don't enter damaged buildings

After

1. Check yourself and others for injuries

2. Monitor news through radio and Tv.

Hope this will help you.

5 0

2 years ago