All categories

3 years ago

Need help with these questions ASAP please help !

Chemistry

1 answer:

tester [92]3 years ago

6 0

Answer:

I).... hydrogen gas

ii)... lithium reacts vigorously with cold water

iii)... lithium + water-------> lithium hydroxide + hydrogen gas

You might be interested in

Chini is sliding blocks of different materials down a steel ramp. All of the blocks have similar sizes and masses. The table sho

Elanso [62]

Answer:Material

Coefficient

of friction

aluminum

chromium

glass

0.25

0.21

0.12

steel

0.23

titanium

vanadium alloy

0.31

Drag the materials into the correct order from the material that will slide down the ramp the fastest to the material that will slide down the ramp the

slowest

chromium

glass

aluminum

titanium vanadium alloy

steel

Explanation:

7 0

3 years ago

Beryllium has an atomic number of 4. How many neutrons does the isotope beryllium-9 have?.

VLD [36.1K]

The number of neutrons possessed by an isotope beryllium-9 is 5.

<h3>What is neutron?</h3>

Neutron is a subatomic particle forming part of the nucleus of an atom and having no charge.

The number of neutrons in the atom of an element can be calculated by subtracting the number of protons or atomic number from the mass number.

That is; no. of neutrons = mass number - no of protons

According to this question, Beryllium has an atomic number or proton number of 4. The number of neutrons in an isotope of beryllium-9 is as follows:

no of neutrons = 9 - 4 = 5

Therefore, the number of neutrons possessed by an isotope beryllium-9 is 5.

Learn more about neutrons at: brainly.com/question/13131235

#SPJ1

3 0

2 years ago

Which statements are true about molecules and compounds? Select all that apply.

beks73 [17]

Answer:

C is the only one that is true

5 0

2 years ago

Read 2 more answers

Predict whether a precipitation reaction will occur when aqueous solutions of pbcl2 and (nh4)2s

Nutka1998 [239]

Answer : YES, The precipitation reaction will occur.

Explanation : When we mix the aqueous solutions of Lead chloride and Ammonium sulfide a reaction will occur which is stated below :

$PbCl_{2} +(NH_{4}) _{2} S ----\ \textgreater \ PbS + 2[ (NH_{4})Cl]$

The major product that is formed is Lead sulfate which is black in colour.

Once the reaction is complete one can observe a black precipitate getting obtained.

5 0

3 years ago

Which term names an environmental cost of fossil fuel consumption?

Yuki888 [10]

B is your answer to this question

4 0

3 years ago

Read 2 more answers