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artcher [175]
3 years ago
11

The ------------- the temperature of an object, the faster the molecules vibrate.

Chemistry
2 answers:
pantera1 [17]3 years ago
6 0
The answer is higher
labwork [276]3 years ago
3 0
Higher, they have more energy so they move faster
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If cobalt metal is mixed with excess sulfur and heated strongly, a sulfide is
Naddik [55]

Answer:

Co2S3.

Explanation:

% of sulphur =  44.94 %

Dividing by the atomic masses:

Co = 55.06 / 58.93 = 0.9343

S = 44.94 / 32.078 = 1.4010

Working out the ratio of Co to S:

1:1.5

= 2:3.

So the empirical formula is Co2S3.

8 0
3 years ago
8. A 220 mL sample of helium gas is in a cylinder with a movable piston at 105 kPa and 275K. The piston
Harrizon [31]

The sample has a new pressure of 274kPa. If at 105 kPa and 275K, a 220 mL sample of helium gas is contained in a cylinder with a moving piston. The sample is pushed till it has a 95.0 mL volume and 310K .

The macroscopic characteristics of ideal gases are related by the ideal gas law (PV = nRT). A gas is considered to be perfect if its particles (a) do not interact with one another and (b) occupy no space (have no volume). Where P= pressure  V= volume and T = temperature.

From ideal gas equation

P₁V₁/T₁ =P₂V₂/T₂

105×220÷275 = P₂ ×95÷310

P₂= (105×220×310)÷(275×95)

P2= 7161000/26125

P2 = 274.105 kPa

Hence, the new pressure of helium gas is 274kPa

To know more about Ideas gas equation

brainly.com/question/28837405

#SPJ1

8 0
1 year ago
Consider the given acid ionization constants. identify the strongest conjugate base.
WARRIOR [948]
The question is incomplete. Complete question is:
<span>Consider the given acid ionization constants. identify the strongest conjugate base.
</span>HNO2(aq) 4.6×10−4
HCHO2(aq) 1.8×10−4
HClO(aq) 2.9×10−8
HCN(aq) 4.9×10−10
.........................................................................................................................
Correct Answer: option 4: HCN(aq) 4.9×10−10

Reason: 
According to Lowry and Bronsted theory of acid and base. Stronger the acid, weaker will be the conjugate base.

In present case, ionization constant is highest of HCN i.e. 4.9×10^{-10}. This signifies that, it is the strongest acid. Hence, conjugate base associated with this acid (i.e. CN^{-}) is the weakest. 
7 0
3 years ago
Read 2 more answers
Help please!! I'll name you brainliest!!
balu736 [363]

Answer:

MgO

Explanation:

4 0
3 years ago
What is the percent composition by mass of sulfur in the compound MgSO4 (gram formula mass = 120 g/mol)?
slavikrds [6]

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate. Explanation: Molar mass of compound = 120 g/mol.

7 0
2 years ago
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