All categories

3 years ago

A class is 47 min how many seconds is this ?

Chemistry

1 answer:

Sonbull [250]3 years ago

4 0

Answer: 2820 seconds

1 minute = 60 seconds

Multiply the value times 60

47×60=2820

You might be interested in

Pls help ill mark as brainliest

asambeis [7]

Answer:

Decomposition

Explanation:

First, you have one compound, then they break up, or decompose, into two compounds.

3 0

3 years ago

A salt solution with a volume of 250 mL that contains 0.70 mol NaCl.

uysha [10]

0.70 mol/0.250 L = 2.8 M

5 0

3 years ago

25. What is the molarity of an H2SO4 solution if

gizmo_the_mogwai [7]

Answer:

Explanation:

hope it helps:)

///////////

7 0

2 years ago

A syringe initially holds a sample of gas with a volume of 285 mL at 355 K and 1.88 atm. To what temperature must the gas in the

Ivahew [28]

Answer: The temperature to which the gas in the syringe must be heated is 720.5 K

Explanation:

To calculate the volume when temperature and pressure has changed, we use the equation given by combined gas law.

The equation follows:

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1,V_1\text{ and }T_1$ are the initial pressure, volume and temperature of the gas

$P_2,V_2\text{ and }T_2$ are the final pressure, volume and temperature of the gas

We are given:

$P_1=1.88atm\\V_1=285mL\\T_1=355K\\P_2=2.50atm\\V_2=435mL\\T_2=?K$

Putting values in above equation, we get:

$\frac{1.88atm\times 285mL}{355K}=\frac{2.50atm\times 435mL}{T_2}\\\\T_2=\frac{2.50\times 435\times 355}{1.88\times 285}=720.5K$

Hence, the temperature to which the gas in the syringe must be heated is 720.5 K

8 0

3 years ago

Which is an element? A: H20 B: NaCl C: Mg D: CO

Talja [164]

The answer is option D "CO." Co also known as Cobalt is the 27th element on the periotic table. It was discovered in 1735, it's boiling point is 3200 k.

Atomic mass: 58.9332
Protons: 27
Neutrons: 32
Electrons: 27

Hope this helps!

3 0

3 years ago

Read 2 more answers