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Mademuasel [1]
3 years ago
11

I have to make the equation equal but I don’t know how to make the H equal but you can’t change the chemical formula

Mathematics
1 answer:
Firdavs [7]3 years ago
4 0

Answer:

Ca(OH)2 + 2 HBr = CaBr2 + 2 H2O

Step-by-step explanation:

Is it H2O2 on the right side and HBr2 on the left side?

Then there is no solution.

I think the formula must look like

Ca(OH)2 + HBr = CaBr2 + H2O

You have 2 Br on the right side then it must be 2 HBr on the left side.

Ca(OH)2 + 2 HBr = CaBr2 + H2O

You have 4 Hs and 2 Os on the left side then it must be 2 H2O on the right side.

Ca(OH)2 + 2 HBr = CaBr2 + 2 H2O

Now everything looks fine.

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Which set has the greatest range?{10,14,8,19,22,13,44}. {19,16,50,18,29,23,37}.{11,9,31,29,15,17,20,24}. {12,6,24,20,44,15,29}
matrenka [14]

Answer: fourth set have them highest range which is 38

Step-by-step explanation:

Range=highiest number-lowest number

First range:

Range=44-8

Range=36

Second range:

Range=50-16

Range=34

Third range:

Range=31-9

Range=22

Fourth range:

Range=44-6

Range=38

5 0
3 years ago
Read 2 more answers
PLS HELP ASAP! GIVING BRAINLIST!
castortr0y [4]

Answer: 5\sqrt{11}

Step-by-step explanation:

25*11=275

\sqrt{25}\sqrt{11}

25 is perfect square but 11 is not so 11 stays inside the radical while 25 is changed to 5

4 0
3 years ago
What is the area of a regular pentagon with a radius of 6 cm?
nikitadnepr [17]

Answer:

  85.6 cm^2

Step-by-step explanation:

The area of the central triangle bounded by each of the sides can be computed as ...

  A = (1/2)r²sin(α) . . . . where α is the central angle, 360°/5 = 72°

There are 5 such triangles, so the area of the pentagon is ...

  A = (5/2)(6 cm)²sin(72°) ≈ 85.595 cm²

The area of the regular pentagon of radius 6 cm is about 85.6 cm².

8 0
3 years ago
The oven tray is 600mm by 500mm. A cake tin is 25cm in diameter. How many cake tins can jenny fit on the oven tray at one time?
Hunter-Best [27]
Oven tray: 600 mm by 500 mm
cake tin: 25 cm in diameter

convert mm to cm.

1 cm = 10 mm

600mm * 1cm/10mm = 60cm
500mm * 1cm/10mm = 50cm

Area of oven tray = 60cm * 50cm  = 3,000 cm²
Area of cake tin = 3.14 * (25cm/2)² = 3.14 * (12.5cm)² = 3.14 * 156.25cm² = 490.625 cm²

3,000cm² ÷ 490.625cm² = 6.11 or 6 cake tins can fit on the oven tray at one time.
3 0
4 years ago
deb is searching online for tickets two weeks ago the cost wass 200 now the cost is 280 what is the percent increase wha would i
Tasya [4]

Answer:

Step-by-step explanation:

200 = 100%

80  = x%

200x = 8000

x = 40% (percentage increase)

400 = 200%

100 = 50%

500 = 200% + 50%

500 = 250% (the other percentage increase)

6 0
3 years ago
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