2 years ago

What phase of matter is oxygen at room temperature

Chemistry

1 answer:

Vedmedyk [2.9K]2 years ago

8 0

Gas

good luck mate :)

You might be interested in

It took 1.5 hours for a bus to go from one city to the next. The bus traveled at an average velocity of 52 mph, west. How far ap

kozerog [31]

The answer is 78 mph

6 0

3 years ago

Read 2 more answers

True or false: covalent compounds are formed when two nonmetals share valance electrons

WITCHER [35]

Answer:

true

Explanation:

H2O : 2 covalent bonds are established between O atom and 2 H atom (H--O--H) by mutual shearing of their valence electrons.

8 0

3 years ago

A scientist digs up sample of arctic ice that is 458,000 years old. He takes it to his lab and finds that it contains 1.675 gram

Fiesta28 [93]

Answer:

6.70 grams of krypton-81 was present when the ice first formed

Explanation:

Let use the below formula to find the amount of sample

$N= N_0(\frac{1}{2})^n$

where

$n = \frac{t}{t_{\frac{1}{2}}}$

here

t = 458,000 years

$t_{\frac{1}{2}}$ = 229,000

$\frac{t}{t_{\frac{1}{2}}}$ = \ $\frac{ 458,000}{229,000}$

n = $\frac{t}{t_{\frac{1}{2}}}$ = 2.000

Now substituting the values

$1.675 = N_0(\frac{1}{2})^{2.000}}$

$1.675 = N_0\times (0.2500)$

$N_0= \frac{1.675}{0.2500}$

$N_0=6.70$

3 0

2 years ago

The mass of a silver bracelet is 2.5 gram, it occupies a volume of 48cm3, what is its density?

NNADVOKAT [17]

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 2.5 g

volume = 48 cm³

The density is

$density = \frac{2.5}{48} \\ = 0.052083333...$

We have the final answer as

Hope this helps you

3 0

3 years ago

Please help!! I was sick when he went over this

Alexus [3.1K]

Answer:

5.70×10^-11 m

Explanation:

7 0

2 years ago