3 years ago

Help Please!!

Chemistry

2 answers:

dexar [7]3 years ago

7 0

It is spontaneous at 298 k.

NikAS [45]3 years ago

5 0

The correct answer is c

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A slice of cheese has a mass of 21 g and a volume of 15 cm3. What is the density of the cheese in units of g/cm3 and g/mL?

photoshop1234 [79]

Explanation:

First, you have to know the definition of density. Density is mass per unit volume, or D = m/V. In this problem, you are given the mass = 37 g and you are given the volume of 21 cm3. So, the density is simply m/V = 37g/21cm3 = 1.76g/cm3. It's that simple.

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3 years ago

Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydr

xxTIMURxx [149]

Answer:

0.374 g

Explanation:

Hello,

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3 years ago

Bromine has two isotopes: 50.69% of Bromine has a mass number of 79 while 49.31% of Bromine has a mass number of 81. Calculate t

natka813 [3]

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3 years ago

Which of the following atoms has the highest electronegativity?

katrin [286]

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3 years ago

A discus thrower throws a 1.6kg discus at 25m/s what's the kinetic energy?

Ilya [14]

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

$k = \frac{1}{2} m {v}^{2} \\$

where

m is the mass

v is the velocity

From the question

m = 1.6 kg

v = 25 m/s

We have

$k = \frac{1}{2} \times 1.6 \times {25}^{2} \\ = 0.8 \times 625 \\ = 500$

We have the final answer as

Hope this helps you

6 0

3 years ago

*Help Please!!*

Help Please!!