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malfutka [58]
3 years ago
15

Determine the number of miles of C in each sample​

Chemistry
1 answer:
stiv31 [10]3 years ago
6 0
Plssssssssss the answer is... you
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Antacids are taken to counterbalance excess hydrochloric acid, HCl, in the stomach. Complete and balance the following neutraliz
abruzzese [7]

Answer:

1. CaCO3 + 2HCl —> CaCl2 + H2O + CO2

2. Mg(OH)2 + 2HCl —> MgCl2 + 2H2O

3. Na2CO3 + 2HCl —> 2NaCl + H2O + CO2

7 0
3 years ago
What’s the difference between directly<br> proportional and inversely proportional.
tatiyna

Answer:

Directly proportional:

A proportion of two variable quantities. when the ratio of two quantities are constant.

inversely proportional:

when one value decreases at the same rate that the other increases.

Explanation:

I hope this does help you, have a great day. :)

7 0
3 years ago
The density of copper metal is 8.9 g/mL. What is the volume of 2.5 kg of this metal?
AlekseyPX

Answer:- The volume of copper is 280 mL.

Solution:- Density and mass of copper metal are given and it asks to calculate the volume of it.

Density is directly proportional to mass and inversely proportional to the volume. The density formula is:

D=\frac{M}{V}

where D stands for density, M stands for mass and V stands for volume.

Since, the problem asks to calculate the volume, let's rearrange the formula for volume.

V=\frac{M}{D}

The given density is 8.9 grams per mL and the mass is 2.5 kg. We need to convert the mass unit from kg to g so that the g unit could be canceled while calculating volume.

The conversion factor is, 1kg = 1000g

2.5kg(\frac{1000g}{1kg})

= 2500g

Let's plug in the values in the density formula to calculate the volume.

\frac{2500g}{\frac{8.9g}{mL}}

= 280.89 mL

If the sig figs are considered then the answer needs to be round to two sig figs and hence the volume becomes 280 mL.

8 0
4 years ago
The number of total electrons of iron is:<br> a) 55.85<br> b)29.85<br> c)26<br> d)27.78<br> e) 56
AleksandrR [38]
I think the answer is b
6 0
3 years ago
Read 2 more answers
A block of aluminum occupies a volume of 15.0 cm and weighs 40.5 g. What is its density?
mafiozo [28]

Answer:

2.7 g/cm^3

Explanation:

D = m/V

D = 40.5 g / 15 cm^3

D =  2.7 g/cm^3

7 0
3 years ago
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