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Alinara [238K]
2 years ago
7

Balance the following equations :

Mathematics
2 answers:
Degger [83]2 years ago
8 0

Answer:

1. 2 Fe + 3 H2SO4 = Fe2(SO4)3 + 3 H2

2. 2 C2H6 + 7 O2 = 6 H2O + 4 CO2

3. 3 KOH + H3PO4 = K3PO4 + 3 H2O

4. SnO2 + 2 H2 = Sn + 2 H2O

5. 4 NH3 + 5 O2 = 4 NO + 6 H2O

6. 2 KNO3 + H2CO3 = K2CO3 + 2 HNO3

7. B2Br6 + 6 HNO3 = 2 B(NO3)3 + 6 HBr

8. 2 BF3 + 3 Li2SO3 = B2(SO3)3 + 6 LiF

9. 4 (NH4)3PO4 + 3 Pb(NO3)4 = Pb3(PO4)4 + 12 NH4NO3

10. SeCl6 + O2 = SeO2 + 3 Cl2

Step-by-step explanation:

uhhh i dont know if its right

IrinaVladis [17]2 years ago
7 0

what is this dude i cant and thank you sa points

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Area of the living room is 180 square feet and the perimeter is 54 feet. What are the dimensions in feet?
dolphi86 [110]

Answer.....15ft by 12ft

Explanation:

Area = Length × Width

180 = LW....make W the subject of formula

;W = 180/L

Perimeter = 2L + 2W

54 = 2L + 2(180/L)...sub W with the formula above...

then simplify the equation and obtain...

2L^2 - 27L + 180 = 0....then solve using the quadratic formula....then obtain..

;L = 15ft....after obtaining L = 15...then substitute into the W = 180/L equation...

where W = 180/15 = 12ft

there you have...Length = 15ft and Width = 12ft

5 0
3 years ago
I need help again, as quickly as possible.
mestny [16]

Answer:

{ \tt{ \frac{1}{x}  +  \frac{1}{3}  <  \frac{1}{5} }} \\  \\ { \tt{ \frac{1}{x}   >   -  \frac{2}{15} }} \\  \\ { \tt{x >   - \frac{15}{2} }} \\  \\ { \bf{ -  \frac{15}{2} < x < 0 }}

5 0
2 years ago
Grandma put 1⁄6 teaspoon of pepper into the soup. After tasting the soup, she added 1⁄8 teaspoon of pepper. How much pepper is i
alexandr1967 [171]
Add 1/6 teaspoon and 1/8 teaspoon.  The LCD here is 24, so we're adding
4/24 to 3/24, obtaining 7/24 (teaspoon of pepper, total).
3 0
3 years ago
Which explains how to show that x= -8/3 is a root of 9x^2+48x+64= 0 ?
Helen [10]

Step-by-step explanation:

9 {( -  \frac{8}{3}) }^{}  {}^{2}  + 48( -  \frac{8}{3} ) + 64  \\  \\ 9( -  \frac{64}{9} ) -  \frac{48}{3}  + 64  \\  \\  - 64 - 16 + 64 =  - 16

4 0
3 years ago
Please help me asap! I will give brainly!
NemiM [27]

Answer:

Figure 4 : 9 by 4 rectangle

17 red squares is figure 8

51 yellow squares

The pattern is +2 for the length, and the width stays the same. Hope this helped. :)

7 0
2 years ago
Read 2 more answers
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