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REY [17]
4 years ago
10

TRUE OR FALSE? When energy changes form, some of the energy changes to heat.

Chemistry
1 answer:
choli [55]4 years ago
3 0
True remember energy can never be destroyed
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Can someone please help me on this?
Marat540 [252]

Answer:

a liquid

Explanation:

I'm not for sure but I just looked it up

8 0
3 years ago
Read 2 more answers
Determine the equilibrium pH and speciation (concentration of each species) of the following two solutions. Neglect activity cor
irina [24]

Answer:

HCl solution - H30+ and Cl ions. pH 3

NaCl - Na+ and Cl-. pH 7

Explanation:

a) HCl solution - the hydrogen ion combines with water molecule to form the hydronium molecule which is responsible for acidity. The chloride ion is also found in solution.

pH = -log [H+] = -log(10^-3) = 3

b) NaCl 10-3 g. The solid dissocates in water forming the Na+ and Cl- ions. None of these ions affect pH

5 0
4 years ago
2)a dish contains a blackish-yellow powder.when a magnet is moved over it black particles iron get stuck to the magnet and only
Andrei [34K]
A element mixture (key word: mixture) due to the mixture containing 2 different types of elements it can be said that it’s highly likely that the mixture was not a compound but instead of a mixture due to mixture meaning more than 1 material. Hopes this help!
6 0
2 years ago
What are the values for % Cl and % F, respectively, for Sample II?
horsena [70]

Answer:

Explanation:

The mass percentages of chlorine and fluorine:

  Given:

Mass of chlorine = 5.753g

 Mass of fluorine = 9.248g

Find the total of the masses given:

   Total mass = mass of chlorine + mass of fluorine = 5.753 + 9.248 = 15.001g

% of Cl = \frac{mass of chlorine}{total mass} x 100

% of Cl = \frac{5.753}{15.001} x 100 = 38.35%

% of F =  \frac{mass of fluorine}{total mass} x 100

% of F =  \frac{9.248}{15.001} x 100 = 61.65%

6 0
4 years ago
Which description is not a property of a base? (2 points)
Ganezh [65]
I think it’s A
because if the pH is lower than 7 than it is acidic
3 0
4 years ago
Read 2 more answers
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