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Phantasy [73]
3 years ago
10

How many kinds of horses are there in the world? Give me a real number, plz its for a magazine article!

Chemistry
2 answers:
iren2701 [21]3 years ago
7 0

Answer:

784 horse breeds

miss Akunina [59]3 years ago
3 0

Answer:

784

Explanation:

You might be interested in
0.408 grams to moles
fiasKO [112]

Answer:

0.003329266949273563

Explanation:

5 0
3 years ago
Iron has a density of 7.86 g/cm3. Calculate the volume (in dL) of a piece of iron having a mass of 3.11 kg
SpyIntel [72]

Answer:

The volume is 3.96 dL

Explanation:

<u>Step 1: Convert ml to dl</u>

1Liter = 1000ml = 10³ ml

1Liter = 10 dl

⇒ 1 Liter has 1000ml or 10 dl

⇒ The ratio can be written as : 10dl/ 1000ml = 1 dl / 100ml

<u>Step 2: Convert cm³ </u>=

⇒ 1cm³ is equal to 1 ml.

<u>Step 3:  Calculate volume</u>

⇒ We use the formule of density here, which is : Density (p) = mass (g) / volume( cm³)

⇒ 7.86 g/ cm³  = 3110 grams / Volume ( cm³)

⇒Volume = 3110 grams / 7.86g/cm³ = 395.67 cm³

395.67 cm³ = 395.67 ml = 0.39567 L  = 3.96 dL

3.96 dL is reported to three significant digits due to the precision reported for the density.

5 0
3 years ago
Why do we use ammonium formate as a hydrogen surrogate instead of using hydrogen gas in this experiment?
NemiM [27]

Answer:

Ammonium formate can also be used in palladium on carbon (Pd/C) reduction of functional groups. In the presence of Pd/C, ammonium formate decomposes to hydrogen, carbon dioxide, and ammonia.

Explanation:

This hydrogen gas is adsorbed onto the surface of the palladium metal, where it can react with various functional groups.

7 0
3 years ago
Which pack has the greatest change in enthalpy, warm packs (such as hand warmers) or cold packs (such as an ice pack)?
katrin [286]
Enthalpy is the change in energy. A cold pack will react endothermically and enthalpy will be positive and a heat pack will have negative enthalpy. You cannot determine which has more change in enthalpy unless you measure the temperature change. Eg. a heat pack went from 25c to 35c will have greater change in enthalpy then a cold pack going from 25 to 20c because the net temperature difference is greater
3 0
3 years ago
The Ksp of silver bromide at 25°C (298 K) is 5.0 x 10-13. Write the solubility expression hydrogen oxygen for this compound and
Rufina [12.5K]
AgBr(s) <—> Ag+(aq) + Br-(aq)

Ksp = [Ag+][Br-]
5 0
2 years ago
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