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mr Goodwill [35]
2 years ago
9

Take off contact lenses first before using an eye wash station . True or False

Chemistry
2 answers:
katen-ka-za [31]2 years ago
4 0
A true because whatever you’re washing out, will get stuck behind your lenses
ryzh [129]2 years ago
3 0

Answer:

TRUE

Explanation:

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ANSWER ASAP AND I WILL GIVE BRAINLYEST!!!!
den301095 [7]

Answer:

C

Explanation:

8 0
3 years ago
A very hot cube of copper metal (32.5 g) is submerged into 105.3 g of water at 15.4 0C and it reach a thermal equilibrium of 17.
zysi [14]

Answer:

The initial temperature of the metal is 84.149 °C.

Explanation:

The heat lost by the metal will be equivalent to the heat gain by the water.  

- (msΔT)metal = (msΔT)water

-32.5 grams × 0.365 J/g°C × ΔT = 105.3 grams × 4.18 J/g °C × (17.3 -15.4)°C

-ΔT = 836.29/12.51 °C

-ΔT = 66.89 °C

-(T final - T initial) = 66.89 °C

T initial = 66.89 °C + T final

T initial = 66.89 °C + 17.3 °C

T initial = 84.149 °C.

7 0
2 years ago
Please help me with number 43
Lana71 [14]

Answer:

The reason why atomic mass is usually not a whole number is because it is a weighted average of the mass numbers of isotopes

Explanation:

8 0
3 years ago
What is the common name of the group whose members are characterized by endoskeleton and a unique water vascular system
iragen [17]
The correct answer for this question would be option B. The common name of the group whose members are characterized by endoskeleton and a unique water vascular system are called the <span> Echinoderms. Examples of echinoderms are starfish, sea urchin, feather stars and sea cucumbers. Hope this is the answer that you are looking for.</span>
5 0
3 years ago
Read 2 more answers
A solution of NaOH has a concentration of 25.00% by mass. What mass of NaOH is present in 0.250 g of this solution? Use the peri
meriva
The concentration of NaOH is 25.00% by mass, it means that 25.00% of the mass of the solution is of NaOH. Hence:

m_{NaOH}=25.00\%\times m_{solution}\Longrightarrow m_{NaOH}=\dfrac{25}{100}\times 0.250~g\iff\\\\\boxed{m_{NaOH}=0.0625~g}
7 0
3 years ago
Read 2 more answers
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